---
product_id: 60442109
title: "C4 EVO Battery Charger Analyzer, Smart AA AAA 18650 Rechargeable Charger with LCD Display, Cycle/Analyze Modes, Adjustable Current, USB-C Fast Charging"
brand: "isdt"
price: "409 zł"
currency: PLN
in_stock: true
reviews_count: 8
category: "Isdt"
url: https://www.desertcart.pl/products/60442109-c4-evo-battery-charger-analyzer-smart-aa-aaa-18650-rechargeable
store_origin: PL
region: Poland
---

# Adjustable 0.1-3.0A charging current per slot 320×240 IPS color display with multi-mode info 6 independent slots for 19 battery types C4 EVO Battery Charger Analyzer, Smart AA AAA 18650 Rechargeable Charger with LCD Display, Cycle/Analyze Modes, Adjustable Current, USB-C Fast Charging

**Brand:** isdt
**Price:** 409 zł
**Availability:** ✅ In Stock

## Summary

> 🔌 Power your essentials with precision and style — never settle for less!

## Quick Answers

- **What is this?** C4 EVO Battery Charger Analyzer, Smart AA AAA 18650 Rechargeable Charger with LCD Display, Cycle/Analyze Modes, Adjustable Current, USB-C Fast Charging by isdt
- **How much does it cost?** 409 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/60442109-c4-evo-battery-charger-analyzer-smart-aa-aaa-18650-rechargeable)

## Best For

- isdt enthusiasts

## Why This Product

- Trusted isdt brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Power Up at Your Pace:** Flexible charging currents from 0.1A to 3.0A let you optimize speed or battery longevity with a simple setting tweak.
- • **Visual Command Center:** Extra-large IPS color screen delivers real-time voltage, current, capacity, and health diagnostics with adjustable brightness for any environment.
- • **USB-C QuickCharge Ready:** Modern USB-C input with QC3.0 & PD support means fast, universal power compatibility—ditch outdated cables and stay future-proof.
- • **Charge Smarter, Not Harder:** Six independent bays let you tailor charge modes for AA, AAA, Li-ion & NiMH batteries simultaneously—perfect for the multitasking pro.
- • **Beyond Charging: Total Battery Care:** Discharge, analyze, cycle, activate, and store modes extend battery life and performance—because your gear deserves premium treatment.

## Overview

The ISDT C4 EVO is a professional-grade smart battery charger supporting 19 rechargeable battery types including AA, AAA, and Li-ion cells up to 26700 size. Featuring six independent charging slots, adjustable current up to 3A per slot, and a vibrant 320×240 IPS display, it offers advanced modes like discharge, analyze, and storage to maximize battery lifespan. Equipped with USB-C QC3.0 input and a quiet cooling fan, it ensures fast, safe, and efficient charging tailored for the modern tech-savvy professional. Firmware updates via the ISD GO app keep it compatible with the latest battery brands, backed by a 1-year warranty and responsive customer support.

## Description

Product description Why does the charger restart or flash during charging? The C4EVO requires a fast-charging USB-C adapter (PD/QC) with at least 18W output. Low-power adapters may cause restarting, flashing, or unstable charging. Why does the charger restart or flash during charging? The C4EVO requires a fast-charging USB-C adapter (PD/QC) with at least 18W output. Low-power adapters may cause restarting, flashing, or unstable charging. Why does the battery get warm during charging? The default current is up to 1.5A for faster charging, which may cause warmth. For lower heat and longer battery life, we recommend reducing it to around 0.6A. Why does the battery get warm during charging? The default current is up to 1.5A for faster charging, which may cause warmth. For lower heat and longer battery life, we recommend reducing it to around 0.6A. Why can’t my charger charge 1.5V Li-ion batteries? Support for 1.5V Li-ion batteries requires firmware version V2.0.0.1 or later. Please update via the ISDT official website (PC required). Why can’t my charger charge 1.5V Li-ion batteries? Support for 1.5V Li-ion batteries requires firmware version V2.0.0.1 or later. Please update via the ISDT official website (PC required). What is Destroy mode used for? Destroy mode safely discharges batteries before disposal. It is designed for damaged or unwanted batteries and is not intended for normal daily use. What is Destroy mode used for? Destroy mode safely discharges batteries before disposal. It is designed for damaged or unwanted batteries and is not intended for normal daily use. Why are some modes unavailable for my battery? Certain modes depend on battery chemistry. For example, Storage mode only supports compatible Li-ion, LiHV, and LiFe batteries. Why are some modes unavailable for my battery? Certain modes depend on battery chemistry. For example, Storage mode only supports compatible Li-ion, LiHV, and LiFe batteries. Multi-Size Battery Charger Comparison C4EVO Smart Charger N8 Smart Charger N16 Smart Charger N24 Smart Charger A8air Compact Charger

Review: Wow - Best charger I have ever owned, and I've had many! - IMPORTANT: Please be aware that this review is for the newer C4 EVO model. Most of the reviews found here on desertcart are for the original C4 charger and even some of the reviews for the new C4 EVO have flat out erroneous information. Please read this review in it's entirety as it may clear up some errors I have seen reported by others in reviews here. Let's start with a description of the unique physical layout of the charger. The charger includes 4 vertically arranged bays and 2 horizontally arranged bays. The vertical bays are for use with AA and AAA batteries only. The horizonal bays are for use with Li-Ion and similar chemistries. I won't rehash all the sizes supported, these are clearly listed in the desertcart listing. A couple of notes related to this: Only the vertical or horizontal bays can be used at any given time, they cannot be used simultaneously. So this means that you can service only AA / AAA batteries OR Li-Ion cells, not both at the same time. A maximum of 4 AA batteries or 4 AAA batteries or any combination of up to 4 AA / AAA batteries can be charged at once. Note that this is different from the original C4 could only accommodate a maximum of 2 AAA batteries. The contacts for the AAA batteries in the original C4 were horrible (in my opinion). The C4 EVO has solid fixed point contacts, seperate contacts for the the AA and AAA batteries. Since there are no moving sliders as in many chargers, this should prove to be highly durable. The horizontal bays can accommodate up to 2 Li-Ion cells. There is one review that states that these can accommodate only unprotected 18650 cells. This is flat out wrong for the C4 EVO. It easily accommodates the 18650 protected cells as well as unprotected cells. The same review also incorrectly asserts that there is no analyze or cycle option available. This wrong but I think that there is a very good reason that the reviewer missed this. I admit that it took me a long time to stumble on this because it was not very intuitive. In the menus, you will see an option called "chemistry". By default this is set to "Auto" meaning that the charger will determine by itself if the battery in any given slot is Li-Ion, NiMH, etc. When set to Auto, the only options that you will see are "Charge" and "Destroy". To see the other options (discharge, storage, analyse, cycle, and activate) you need to manually select the chemistry. Once you have done this, all options will be available under "Task" in the menu. Versatile power options: The power input on the C4 EVO is a USB-C connection. Note that no charger is included with the unit - you will need to supply your own. The adapter that you supply will need to support either QuickCharge (QC) 2 or 3 protocols or the Power Delivery (PD) protocol. You can also use the USB port on a computer as a power source. A few important notes regarding this: This charger can charge batteries at a high charge rate (up to 3 amps per cell) / 36 watts maximum for all batteries. If your power adapter is not capable of delivering at least 36 watts at 5V or 9V then the maximum charge rate may be limited to a slower charge rate. If you use a USB port on a computer, make sure that you use a USB 3 port and NOT a USB 2 port. A USB 2 port can only deliver 500mA of current which is only half the 1A minimum needed by the charger. However, the fact that you can even use the USB port on a PC is a really handy feature when on the road with a laptop. Fan: The charger has a cooling fan so be aware that the charger will not run completely silently under all conditions however, I have found the fan to be FAR quieter than the original C4 and it has not bothered me in the least. Hard buttons: The original C4 had a touch sensitive area where there are now physical buttons. Personally, I find the new buttons to be a big improvement as the touch sensitive buttons were more prone to erroneous input. Options galore: Wow - there are a lot of options. You can charge, discharge, analyse, cycle, activate, and place your batteries in storage mode. I'm particularly in love with the storage option. If you are not familiar with this, let me explain: LiIon (and similar) chemistry batteries don't really tolerate long term storage fully charged. As a result, it is best to store these batteries at a lower voltage. As an example, I have a lot of LiIon batteries that I keep only for emergencies to power radios, flashlights, etc. If there are reports of storms or potential emergencies in the next few days I will charge the batteries fully so I'm fully prepared. Otherwise, I will discharge them to a voltage that is healthier for long term storage. This charger can automatically charge or discharge batteries to a level that is best suited for long term storage. Nice feature! Advanced options: For advanced users there are some very advanced options. For example, for LiIon batteries you can set the precise voltage at which charging should be terminated. For NiMH batteries, you can specify the delta V used to determine charge termination. I would strongly suggest not altering these unless you really know what you are doing and have good reason to do so, but the fact that these options are even available are pretty fantastic. USB-C: Just about all my portable electronics use USB-C these days. Having to keep other adapters and cables to support a charger using Micro USB was really annoying. With this charger I am finally free of that and now only need USB-C. This to me is just the icing on the cake of an exceptionally well executed product. Technical Support: I had one or two questions for Technical Support so I set an e-mail to them. I was surprised to get a friendly, through explanation to my query within less than one hour. Very impressive!
Review: Great charger, it could be better. - After looking around at many different chargers which included the BT-C3100 (3400), Litokala Lii-500S, and many others, I decided on this one because of the very controllable user interface, up to 3 Amp charging current, wide battery chemistry coverage, very adjustable charge and discharge currents in 0.1 Amp increments, excellent display, with plenty of information, plus the upgradeable firmware (software that makes it work). In choosing this charger, I was aware that I sacrificed the convenience of battery size and number of batteries that can be charged at one time, given the limitations of the charging bay. It allows for up to (4) AA, or (2) AAA, or (2) 18650 batteries and similar batteries to be charged simultaneously. You cannot, for example, charge a AA or AAA battery if you are charging a 18650 cell. This limitation can be overcome with adapters that use the 4 AA charging locations, wired to external battery holders. Some 3D printable designs for these adapters are available for free on line, and some of them are available for purchase; I have seen adapters for (4) 18650 or (4) AAA cells. I chose to design my own adapter, which allows me to use from 1 to 4 adapters individually, and use the remaining AA charge locations in the charger itself. Once you connect the power, the display will show the voltage of the power supply. You can adjust the charger settings from this screen. These include language, buzzer volume, display intensity, the use or not of charge interruption by cell capacity, time after battery insertion for auto charge to start, battery information display scroll time. I chose manual charge start, because it allows for the relaxed adjustment of the parameters under which the battery just inserted will be charged; this is very important if you are charging different chemistry or capacity cells, or if you want to perform different operations for each cell. When you insert a battery, the screen will show the voltage of the battery before it starts charging. It will also show the battery charge parameters for you to choose. The charger will then time to auto charge or wait for a manual start. The charger can automatically guess the chemistry and charge/discharge parameters, and operation to be performed. I recommend using manual selections. Once you select these parameters and the operation to be performed, you will be offered the same options for every cell you place in the charger. Once the operation starts, the display will show all relevant parameters and values for each cell, for the amount of time you chose on the charger setup screen, and then scroll to the next battery. You can manually switch the screen to show some of the parameters and a voltage vs time graph. I am very pleased with the charger, but: - It would be better if it had the conventional spring loaded charging bay contacts that allow to charge from AAA to 26700 cells. - It would be even better if you could charge 9 Volt batteries. - The use of stronger charge contacts would also be a welcome improvement. - Some have complained about the internal fan noise level

## Features

- Six Slots Independent Charging: ISDT smart battery charger, each channel can be set to different working modes compatible with 19 types of rechargeable batteries size to 26700 battery the Max.(*Support battery AAA,AA,10440,10500,12500,13500,14500,14650,16650,17650,17670,18650,18700,20650,20700,21700,22650,26650,26700), This charger does not support alkaline batteries.
- Adjustable Charging Speed: This household battery charger supports up to 36W Type-C input, with adjustable charging currents ranging from 0.1A to 3.0A per slot. It offers flexible fast or slow charging options to suit your needs. For optimal performance, do not use a power adapter rated below 20W.
- Multifunctional Display: Designed for both 1.5V/3.7V Li-ion and 1.2V Ni-MH batteries, this battery charging station features an extra-large color display. It clearly presents all charging parameters in multiple formats, ensuring easy readability. With adjustable brightness and highly responsive control keys, operation is both intuitive and user-friendly.
- Advanced Working Modes: More than just a charger, this device also functions as a discharger, analyzer, and tester. It helps extend battery life by providing comprehensive diagnostics and optimized charging cycles.
- Fast & Efficient Charging: Equipped with a quiet cooling fan, this liuthium & nimh quick charger enhances heat dissipation during rapid charging to maintain optimal battery temperature. You can manually reduce the charging current to minimize heat buildup (default setting: 1.5A).
- What You Get: ISDT C4 EVO Charger ×1, USB-C Cable ×1, User Manual ×1, 1-Year Warranty, Friendly Customer Support
- Tips: To ensure compatibility with more battery brands—such as desertcart Panasonic Eneloop 1.5V Li-ion batteries—we recommend updating the firmware via the ISD GO app upon receiving the charger. (*Note: The ISD GO app is currently not supported on macOS systems.)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0799JFWM3 |
| Amperage | 3 Amps |
| Brand | ISDT |
| Connector Type Used on Cable | USB Type-C |
| Current Rating | 3 Amps |
| Customer Reviews | 4.0 out of 5 stars 111 Reviews |
| Input Voltage | 5 Volts |
| Item Weight | 195 Grams |
| Manufacturer | Shenzhen ISD Technology Co., Ltd |
| Mfr Part Number | ISDT |
| Model Number | ISDT |
| Number of Ports | 6 |
| Output Voltage | 5 Volts |
| UPC | 843359100270 709046963392 768684806010 |
| Warranty Description | 1 Year |

## Product Details

- **Brand:** ISDT
- **Current Rating:** 3 Amps
- **Input Voltage:** 5 Volts
- **Item Weight:** 195 Grams
- **Output Voltage:** 5 Volts

## Images

![C4 EVO Battery Charger Analyzer, Smart AA AAA 18650 Rechargeable Charger with LCD Display, Cycle/Analyze Modes, Adjustable Current, USB-C Fast Charging - Image 1](https://m.media-amazon.com/images/I/61uVM737E7L.jpg)
![C4 EVO Battery Charger Analyzer, Smart AA AAA 18650 Rechargeable Charger with LCD Display, Cycle/Analyze Modes, Adjustable Current, USB-C Fast Charging - Image 2](https://m.media-amazon.com/images/I/61uXQqcCiiL.jpg)
![C4 EVO Battery Charger Analyzer, Smart AA AAA 18650 Rechargeable Charger with LCD Display, Cycle/Analyze Modes, Adjustable Current, USB-C Fast Charging - Image 3](https://m.media-amazon.com/images/I/71IVWMCSV0L.jpg)
![C4 EVO Battery Charger Analyzer, Smart AA AAA 18650 Rechargeable Charger with LCD Display, Cycle/Analyze Modes, Adjustable Current, USB-C Fast Charging - Image 4](https://m.media-amazon.com/images/I/51XennQ8ARL.jpg)
![C4 EVO Battery Charger Analyzer, Smart AA AAA 18650 Rechargeable Charger with LCD Display, Cycle/Analyze Modes, Adjustable Current, USB-C Fast Charging - Image 5](https://m.media-amazon.com/images/I/61dAFrtfdQL.jpg)

## Questions & Answers

**Q: Why does the charger restart or flash during charging?**
A: The C4EVO requires a fast-charging USB-C adapter (PD/QC) with at least 18W output. Low-power adapters may cause restarting, flashing, or unstable charging.

**Q: Why does the battery get warm during charging?**
A: The default current is up to 1.5A for faster charging, which may cause warmth. For lower heat and longer battery life, we recommend reducing it to around 0.6A.

**Q: Why can’t my charger charge 1.5V Li-ion batteries?**
A: Support for 1.5V Li-ion batteries requires firmware version V2.0.0.1 or later. Please update via the ISDT official website (PC required).

**Q: What is Destroy mode used for?**
A: Destroy mode safely discharges batteries before disposal. It is designed for damaged or unwanted batteries and is not intended for normal daily use.

**Q: Why are some modes unavailable for my battery?**
A: Certain modes depend on battery chemistry. For example, Storage mode only supports compatible Li-ion, LiHV, and LiFe batteries.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Wow - Best charger I have ever owned, and I've had many!
*by H***S on May 27, 2021*

IMPORTANT: Please be aware that this review is for the newer C4 EVO model. Most of the reviews found here on Amazon are for the original C4 charger and even some of the reviews for the new C4 EVO have flat out erroneous information. Please read this review in it's entirety as it may clear up some errors I have seen reported by others in reviews here. Let's start with a description of the unique physical layout of the charger. The charger includes 4 vertically arranged bays and 2 horizontally arranged bays. The vertical bays are for use with AA and AAA batteries only. The horizonal bays are for use with Li-Ion and similar chemistries. I won't rehash all the sizes supported, these are clearly listed in the Amazon listing. A couple of notes related to this: Only the vertical or horizontal bays can be used at any given time, they cannot be used simultaneously. So this means that you can service only AA / AAA batteries OR Li-Ion cells, not both at the same time. A maximum of 4 AA batteries or 4 AAA batteries or any combination of up to 4 AA / AAA batteries can be charged at once. Note that this is different from the original C4 could only accommodate a maximum of 2 AAA batteries. The contacts for the AAA batteries in the original C4 were horrible (in my opinion). The C4 EVO has solid fixed point contacts, seperate contacts for the the AA and AAA batteries. Since there are no moving sliders as in many chargers, this should prove to be highly durable. The horizontal bays can accommodate up to 2 Li-Ion cells. There is one review that states that these can accommodate only unprotected 18650 cells. This is flat out wrong for the C4 EVO. It easily accommodates the 18650 protected cells as well as unprotected cells. The same review also incorrectly asserts that there is no analyze or cycle option available. This wrong but I think that there is a very good reason that the reviewer missed this. I admit that it took me a long time to stumble on this because it was not very intuitive. In the menus, you will see an option called "chemistry". By default this is set to "Auto" meaning that the charger will determine by itself if the battery in any given slot is Li-Ion, NiMH, etc. When set to Auto, the only options that you will see are "Charge" and "Destroy". To see the other options (discharge, storage, analyse, cycle, and activate) you need to manually select the chemistry. Once you have done this, all options will be available under "Task" in the menu. Versatile power options: The power input on the C4 EVO is a USB-C connection. Note that no charger is included with the unit - you will need to supply your own. The adapter that you supply will need to support either QuickCharge (QC) 2 or 3 protocols or the Power Delivery (PD) protocol. You can also use the USB port on a computer as a power source. A few important notes regarding this: This charger can charge batteries at a high charge rate (up to 3 amps per cell) / 36 watts maximum for all batteries. If your power adapter is not capable of delivering at least 36 watts at 5V or 9V then the maximum charge rate may be limited to a slower charge rate. If you use a USB port on a computer, make sure that you use a USB 3 port and NOT a USB 2 port. A USB 2 port can only deliver 500mA of current which is only half the 1A minimum needed by the charger. However, the fact that you can even use the USB port on a PC is a really handy feature when on the road with a laptop. Fan: The charger has a cooling fan so be aware that the charger will not run completely silently under all conditions however, I have found the fan to be FAR quieter than the original C4 and it has not bothered me in the least. Hard buttons: The original C4 had a touch sensitive area where there are now physical buttons. Personally, I find the new buttons to be a big improvement as the touch sensitive buttons were more prone to erroneous input. Options galore: Wow - there are a lot of options. You can charge, discharge, analyse, cycle, activate, and place your batteries in storage mode. I'm particularly in love with the storage option. If you are not familiar with this, let me explain: LiIon (and similar) chemistry batteries don't really tolerate long term storage fully charged. As a result, it is best to store these batteries at a lower voltage. As an example, I have a lot of LiIon batteries that I keep only for emergencies to power radios, flashlights, etc. If there are reports of storms or potential emergencies in the next few days I will charge the batteries fully so I'm fully prepared. Otherwise, I will discharge them to a voltage that is healthier for long term storage. This charger can automatically charge or discharge batteries to a level that is best suited for long term storage. Nice feature! Advanced options: For advanced users there are some very advanced options. For example, for LiIon batteries you can set the precise voltage at which charging should be terminated. For NiMH batteries, you can specify the delta V used to determine charge termination. I would strongly suggest not altering these unless you really know what you are doing and have good reason to do so, but the fact that these options are even available are pretty fantastic. USB-C: Just about all my portable electronics use USB-C these days. Having to keep other adapters and cables to support a charger using Micro USB was really annoying. With this charger I am finally free of that and now only need USB-C. This to me is just the icing on the cake of an exceptionally well executed product. Technical Support: I had one or two questions for Technical Support so I set an e-mail to them. I was surprised to get a friendly, through explanation to my query within less than one hour. Very impressive!

### ⭐⭐⭐⭐⭐ Great charger, it could be better.
*by L***D on November 12, 2020*

After looking around at many different chargers which included the BT-C3100 (3400), Litokala Lii-500S, and many others, I decided on this one because of the very controllable user interface, up to 3 Amp charging current, wide battery chemistry coverage, very adjustable charge and discharge currents in 0.1 Amp increments, excellent display, with plenty of information, plus the upgradeable firmware (software that makes it work). In choosing this charger, I was aware that I sacrificed the convenience of battery size and number of batteries that can be charged at one time, given the limitations of the charging bay. It allows for up to (4) AA, or (2) AAA, or (2) 18650 batteries and similar batteries to be charged simultaneously. You cannot, for example, charge a AA or AAA battery if you are charging a 18650 cell. This limitation can be overcome with adapters that use the 4 AA charging locations, wired to external battery holders. Some 3D printable designs for these adapters are available for free on line, and some of them are available for purchase; I have seen adapters for (4) 18650 or (4) AAA cells. I chose to design my own adapter, which allows me to use from 1 to 4 adapters individually, and use the remaining AA charge locations in the charger itself. Once you connect the power, the display will show the voltage of the power supply. You can adjust the charger settings from this screen. These include language, buzzer volume, display intensity, the use or not of charge interruption by cell capacity, time after battery insertion for auto charge to start, battery information display scroll time. I chose manual charge start, because it allows for the relaxed adjustment of the parameters under which the battery just inserted will be charged; this is very important if you are charging different chemistry or capacity cells, or if you want to perform different operations for each cell. When you insert a battery, the screen will show the voltage of the battery before it starts charging. It will also show the battery charge parameters for you to choose. The charger will then time to auto charge or wait for a manual start. The charger can automatically guess the chemistry and charge/discharge parameters, and operation to be performed. I recommend using manual selections. Once you select these parameters and the operation to be performed, you will be offered the same options for every cell you place in the charger. Once the operation starts, the display will show all relevant parameters and values for each cell, for the amount of time you chose on the charger setup screen, and then scroll to the next battery. You can manually switch the screen to show some of the parameters and a voltage vs time graph. I am very pleased with the charger, but: - It would be better if it had the conventional spring loaded charging bay contacts that allow to charge from AAA to 26700 cells. - It would be even better if you could charge 9 Volt batteries. - The use of stronger charge contacts would also be a welcome improvement. - Some have complained about the internal fan noise level

### ⭐⭐⭐⭐ Mostly Amazing!
*by M***L on May 16, 2019*

First off this charger is overall a super nice well featured smart charger, I'm running firmware V1.1.0.10. I fully recommend this one. To start the screen is very nice and informative, bright and easy to read. All the information updates on the fly , it's not a one time reading. The voltage curve graph is nice but needs to have more information. Graphs for voltage, resistance, and temperature over the cycle time would be a great addition. I like how it shows the voltage and current when the USB out is being used but it is only visible when no battery slots are charging. To switch between the graph and the extra info just press the middle circle touch button while running a cycle, to stop/pause a current cycle long press the middle circle touch button while that cycle is selected. It will reset all the info if you make a change, if you long hold and make no changes and just select start again it will resume with the previous info. When running analysis cycle it's very nice that you can set the charge and discharge rate just wish you could set a delay in seconds to cool down between the charge and discharge runs would be nice for the "cycle" program as well. One other cool thing is when all slots are finished and/or it's left plugged in, the backlight turns off and a screen saver bounces around the screen. Has memory and remembers your settings even when unplugged. The odd quirks is when you insert an alkaline non-rechargeable and set it to auto it detects as a Ni-MH, it then charges normally until it reaches around 1.5V. After that it switches the info on the screen from "1.5V/3500mAh NiMH"(with capacity limit on) to "1.68V/400mAh NiMH !!!". It then charges it up to around 1.68V and completes. The only time it does this is when a non-rechargeable alkaline is inserted. See Picture. I don't generally charge any type of battery over 1A so maybe that's why but the fan rarely comes on for me, and when it does it's fairly high pitched and loud but turns off pretty quick. Turns off and on quite a bit while charging 2 18650s at 1A each. A couple of issues I have with the Amazon description and actual product are it says the charger is "Protected by a strong aluminium case", it's not, it's plastic. It is also listed as being capable of "Max charging 6 batteries simultaneously", it can't. It can charge a MAX of 4 AA size batteries of any chemistry, or 2 AAA of any chemistry, or 2 AA & 1 AAA, 2 18650 unprotected cells, or 1 26650 lower horizontal slot. It can't charge 6 of anything simultaneously and it has 8 total slots, 4 AA + 2 AAA + 2 18650 (lower one shared for 26650) for a total of 8. The 2 AAA slots can be tricky to get the battery correctly seated due to the contacts being thin wires causing the positive top button to want to slide to the side of the wire. See Picture. Small issues overall and should be corrected in future updates I hope, overall I love this thing and highly recommend this smart charger!

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.pl/products/60442109-c4-evo-battery-charger-analyzer-smart-aa-aaa-18650-rechargeable](https://www.desertcart.pl/products/60442109-c4-evo-battery-charger-analyzer-smart-aa-aaa-18650-rechargeable)

---

*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-05-28*