--- product_id: 33587130 title: "ENERGIZER 4-Amp 6V/12V Auto Charger, 9-Step Smart Battery Maintainer, Trickle Charger w/ LCD Display" brand: "energizer" price: "16 zΕ‚" currency: PLN in_stock: false reviews_count: 13 url: https://www.desertcart.pl/products/33587130-energizer-4-amp-6v-12v-auto-charger-9-step-smart store_origin: PL region: Poland --- # 4 Amp fast charging power 9-step smart charging tech Auto detects 6V/12V batteries ENERGIZER 4-Amp 6V/12V Auto Charger, 9-Step Smart Battery Maintainer, Trickle Charger w/ LCD Display **Brand:** energizer **Price:** 16 zΕ‚ **Availability:** ❌ Out of Stock ## Summary > πŸ”Œ Power up smarter, not harder β€” never get stranded again! ## Quick Answers - **What is this?** ENERGIZER 4-Amp 6V/12V Auto Charger, 9-Step Smart Battery Maintainer, Trickle Charger w/ LCD Display by energizer - **How much does it cost?** 16 zΕ‚ with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/33587130-energizer-4-amp-6v-12v-auto-charger-9-step-smart) ## Best For - energizer enthusiasts ## Why This Product - Trusted energizer brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Real-Time LCD Display:** Instantly know your battery’s status and voltage with a clear digital readout. - β€’ **Smart 9-Step Charging:** Keeps your battery healthier, longer-lasting, and always ready to go. - β€’ **Auto Voltage Detection:** Seamlessly charges both 6V and 12V batteries without manual settings. - β€’ **Built-In Safety Protections:** Overcharge, reverse polarity, and short circuit safeguards for worry-free charging. - β€’ **Universal Compatibility & Easy Setup:** Perfect for cars, motorcycles, RVs, and boats with quick-connect clamps. ## Overview The ENERGIZER 4-Amp Auto Charger is a compact, fully automatic battery maintainer featuring 9-step smart charging technology and an LCD display for real-time battery status. It auto-detects 6V and 12V batteries, adjusts amperage accordingly, and includes multiple safety protections. Ideal for a wide range of vehicles, it offers easy connection and a 5-year warranty, making it a reliable essential for proactive vehicle care. ## Description Buy ENERGIZER 4-Amp 6V/12V Auto Charger, 9-Step Smart Battery Maintainer, Trickle Charger w/ LCD Display: Battery Chargers - desertcart.com βœ“ FREE DELIVERY possible on eligible purchases Review: Energizer ENC4A 4 amp charger - I am totally impressed with the Energizer 4.0 AMP Battery Charger. I am in the taxi business and my taxi's need to run 24 hours a day. As soon as one taxi's has even has a symptom of a battery problem and the alternator checks out I immediately change the battery. I had 3 used battery's that failed on me. And left them in storage. Battery Number 1. This battery was in storage for 7 years and I thought I would use it as a core deposit. The battery voltage was 6 to 7 volts (very low). I hooked up the Energizer 4amp charger and immediately started to charge at between 6 to 7 volts. It took about 27 hours to fully charge the battery. The only problem is that at around 24+ hours an E3 code appeared (overheat code but the Energizer 4.0 amp charger only felt warm). I simply unplugged the charger and waited 30 seconds and plugged it back in. The Energizer continued until the battery was fully charged. I also have a Ctek 3300 charger and if the battery voltage is too low I would have to initially charge it with my old Schumacher battery charger to bring it up a little. Then the Ctek could start to charge the battery. Battery Number 2 This second battery is new (6 months) but was weak and could even turn on the interior lights. Voltage on this battery was 10 volts. The Energizer 4 amp Charger again started charging with no problems. In about 20+ the battery was fully charged. Battery Number 3 This third battery was in storage hooked in the car and left that way for five years That car was to be used for spare parts.. When I touched the battery terminals no spark. I thought this battery was finished. By chance I connected it to the Energizer 4.0 amp charger and it started to charging the battery. At around 24+ hours an E3 code appeared but by simply unplugging and waiting 30 seconds the plugging it back in everything was fine. I do not know if the Energizer has a internal timer and if the charger will shut off after 24+ hours. The charger is not hot and at best lukewarm. On battery's number 1 and number 3, batteries were highly sulphated. These are the 9 steps which are: Stage 1 Diagnosis and Analysis Stage 2 Desulphation Stage 3 Pre-Charge Stage 4 Soft Start ….slow current charge Stage 5 Constant …..current charge Stage 6 Constant voltage until nearly full charge Stage 7 Resting Cutoff fully charge Stage 8 Reconditioning when fully charge but reaches 12.8 volts within 2 minutes. Charger will determine the status Stage 9. Restoring.... If battery falls below 12.8 volts. Charger will start stage 3 to stage 6 automatically. When I first saw this charger I took a chance in ordering the Energizer 4 amp model. I was very surprised. It is the best Battery Charger on the market today plus it is cheaper $29.95. (Ctek $69.00).I will buy the 8 amp model next. Update The Energizer ENC 4amp can be left connect to a load (like still hooked up to a car). If no load, my battery registered 12.5 volts, and reaches 14.75 volts with the Energizer Charger for recharging (out of the car). When the car is running with alternator charging without the Energizer Charger the reading is 14.0 volts (normal). When the Energizer Charger is plugged in with the engine running and alternator charging the voltage is 14.6 volts. The key to the success of this charger is that it senses the voltage first then will match to charging rate. Load or No-load. I charger is manufactured in China, The software/design must to have been USA designed. No way is this charger software, design and manufactured totally in China. It has leapfrogged the Ctek Chargers. Review: Great little charger! - Nice 9 stage smart charger! I have used this charger twice in the last month with great results. It does what is suppose to do. I do like the desulphation feature so it can help restore your battery by cleaning the lead plates. Small and compact. Back led is great in dark situations. The cords are fairly long and the clamps are Ok. The unit itself feels well made in your hands. Like the 5 year warranty as well. I did not have any issues with this unit resetting itself as every time I pug it the unit starts to charge a 12 v car battery and I do not need to manually find the right setting 6v, 12v cold charge...etc. I think if the unit looses power in a power failure it will default to the last setting and continue charging one power is restored. This may be a newer unit as I know some reviews said their chargers did not perform this way. Price is very competitive for all the features that it offers. Good job Energizer! ## Features - 4 AMP FULLY AUTOMATIC BATTERY CHARGER WITH LCD DISPLAY: This trickle charger for car battery automatically switches between charging mode and float mode monitoring. The built-in LCD monitor of this portable car charger will provide you with accurate status and battery voltage measurement. - AUTO VOLTAGE DETECTION: This car battery charger detects 6 Volt or 12 Volt batteries, charges, and maintains them. Built-in circuit protection guards against overcharging, reverse polarity, or short circuits. This 6V & 12V portable charger automatically adjusts the amperage rate to charge and maintain batteries. - 9-STEP SMART CHARGING TECHNOLOGY: These car battery charging units help keep your batteries last longer than simple car chargers. High-frequency smart 9 step charging technology keeps batteries at an optimal charge. Suitable battery maintainer for cars, BMW, Van, motorcycle, campervan, RV, boats, and more. - QUICK CONNECTION CAR CHARGER: Easy connection to vehicle battery using the included battery clips and O-ring terminals. Just connect the red clamp to the positive pole(+), and the black clamp to the negative pole. This battery jump starter is perfect and essential car accessories, motorbike accessories, and campervan accessories. - 5 YEAR WARRANTY: Includes a five-year repair or replace warranty and specialized customer service & technical support via email phone or chat. From a brand you can trust! ETL Approved under UL std 1236 and CSA C22.2 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01GSJLD34 | | Amperage | 4 Amps | | Best Sellers Rank | #1,688,673 in Automotive ( See Top 100 in Automotive ) #2,543 in Battery Chargers | | Brand | Energizer | | Built-In Media | product, manual | | Color | Black | | Current Rating | 4 Amps | | Customer Reviews | 4.5 4.5 out of 5 stars (491) | | Global Trade Identification Number | 00841915002501 | | Input Voltage | 110 Volts (AC) | | Item Dimensions D x W x H | 6.1"D x 3.31"W x 1.81"H | | Item Type Name | jump start | | Item Weight | 1 Pounds | | Manufacturer | Energizer | | Mfr Part Number | ENC-4A | | Model Number | ENC4A | | Output Voltage | 12 Volts (DC) | | UPC | 841915002501 | | Warranty Description | 1 year | ## Product Details - **Brand:** Energizer - **Color:** Black - **Item Weight:** 1 Pounds - **Output Voltage:** 12 Volts (DC) - **Product Dimensions:** 6.1"D x 3.31"W x 1.81"H ## Images ![ENERGIZER 4-Amp 6V/12V Auto Charger, 9-Step Smart Battery Maintainer, Trickle Charger w/ LCD Display - Image 1](https://m.media-amazon.com/images/I/61auyvhYJvL.jpg) ![ENERGIZER 4-Amp 6V/12V Auto Charger, 9-Step Smart Battery Maintainer, Trickle Charger w/ LCD Display - Image 2](https://m.media-amazon.com/images/I/71R6Z0dkb0L.jpg) ![ENERGIZER 4-Amp 6V/12V Auto Charger, 9-Step Smart Battery Maintainer, Trickle Charger w/ LCD Display - Image 3](https://m.media-amazon.com/images/I/71BVMDCv9wL.jpg) ![ENERGIZER 4-Amp 6V/12V Auto Charger, 9-Step Smart Battery Maintainer, Trickle Charger w/ LCD Display - Image 4](https://m.media-amazon.com/images/I/7131aVHnxJL.jpg) ![ENERGIZER 4-Amp 6V/12V Auto Charger, 9-Step Smart Battery Maintainer, Trickle Charger w/ LCD Display - Image 5](https://m.media-amazon.com/images/I/71ye5ioMwFL.jpg) ## Questions & Answers **Q: Can this be used while replacing car battery so car does not loose settings during replacement?** A: There is a special OBDII connector that attaches to the battery so that every thing is still powered. It's on Amazon: (I am not affiliated with seller) BT30 OBD II Vehicle ECU Emergency Power Supply Cable,Car OBD2 Memory Saver Connector ECU Emergency Power Supply Clip ​Battery Clamp OBD2 Adaptor for Car Battery Replacement Maintenance **Q: How Long are the cords?** A: Terminal cord is 6 ft, electric cord is 6 ft (total length 12 ft) **Q: What is the input AC voltage? auto volt or 120v only** A: The AC Input is 120v. **Q: Would this be decent to charge an Exide 24 Dual Purpose Marine Battery? Right now my battery tender waterproof 800 0.75 amp takes quite a while.** A: This is not a charger in the conventional sense. These (and your Battery Tender) are made to MAINTAIN a charge. If your battery is dead/low you need a regular battery charger to fully charge it, then use this to maintain your charge. Your Battery Tender is only providing less than 1 amp in charge, that's why it takes forever. Like trying to fill a lake with a garden hose! ## Customer Reviews ### ⭐⭐⭐⭐⭐ Energizer ENC4A 4 amp charger *by D***. on October 10, 2016* I am totally impressed with the Energizer 4.0 AMP Battery Charger. I am in the taxi business and my taxi's need to run 24 hours a day. As soon as one taxi's has even has a symptom of a battery problem and the alternator checks out I immediately change the battery. I had 3 used battery's that failed on me. And left them in storage. Battery Number 1. This battery was in storage for 7 years and I thought I would use it as a core deposit. The battery voltage was 6 to 7 volts (very low). I hooked up the Energizer 4amp charger and immediately started to charge at between 6 to 7 volts. It took about 27 hours to fully charge the battery. The only problem is that at around 24+ hours an E3 code appeared (overheat code but the Energizer 4.0 amp charger only felt warm). I simply unplugged the charger and waited 30 seconds and plugged it back in. The Energizer continued until the battery was fully charged. I also have a Ctek 3300 charger and if the battery voltage is too low I would have to initially charge it with my old Schumacher battery charger to bring it up a little. Then the Ctek could start to charge the battery. Battery Number 2 This second battery is new (6 months) but was weak and could even turn on the interior lights. Voltage on this battery was 10 volts. The Energizer 4 amp Charger again started charging with no problems. In about 20+ the battery was fully charged. Battery Number 3 This third battery was in storage hooked in the car and left that way for five years That car was to be used for spare parts.. When I touched the battery terminals no spark. I thought this battery was finished. By chance I connected it to the Energizer 4.0 amp charger and it started to charging the battery. At around 24+ hours an E3 code appeared but by simply unplugging and waiting 30 seconds the plugging it back in everything was fine. I do not know if the Energizer has a internal timer and if the charger will shut off after 24+ hours. The charger is not hot and at best lukewarm. On battery's number 1 and number 3, batteries were highly sulphated. These are the 9 steps which are: Stage 1 Diagnosis and Analysis Stage 2 Desulphation Stage 3 Pre-Charge Stage 4 Soft Start ….slow current charge Stage 5 Constant …..current charge Stage 6 Constant voltage until nearly full charge Stage 7 Resting Cutoff fully charge Stage 8 Reconditioning when fully charge but reaches 12.8 volts within 2 minutes. Charger will determine the status Stage 9. Restoring.... If battery falls below 12.8 volts. Charger will start stage 3 to stage 6 automatically. When I first saw this charger I took a chance in ordering the Energizer 4 amp model. I was very surprised. It is the best Battery Charger on the market today plus it is cheaper $29.95. (Ctek $69.00).I will buy the 8 amp model next. Update The Energizer ENC 4amp can be left connect to a load (like still hooked up to a car). If no load, my battery registered 12.5 volts, and reaches 14.75 volts with the Energizer Charger for recharging (out of the car). When the car is running with alternator charging without the Energizer Charger the reading is 14.0 volts (normal). When the Energizer Charger is plugged in with the engine running and alternator charging the voltage is 14.6 volts. The key to the success of this charger is that it senses the voltage first then will match to charging rate. Load or No-load. I charger is manufactured in China, The software/design must to have been USA designed. No way is this charger software, design and manufactured totally in China. It has leapfrogged the Ctek Chargers. ### ⭐⭐⭐⭐⭐ Great little charger! *by G***O on September 21, 2017* Nice 9 stage smart charger! I have used this charger twice in the last month with great results. It does what is suppose to do. I do like the desulphation feature so it can help restore your battery by cleaning the lead plates. Small and compact. Back led is great in dark situations. The cords are fairly long and the clamps are Ok. The unit itself feels well made in your hands. Like the 5 year warranty as well. I did not have any issues with this unit resetting itself as every time I pug it the unit starts to charge a 12 v car battery and I do not need to manually find the right setting 6v, 12v cold charge...etc. I think if the unit looses power in a power failure it will default to the last setting and continue charging one power is restored. This may be a newer unit as I know some reviews said their chargers did not perform this way. Price is very competitive for all the features that it offers. Good job Energizer! ### ⭐⭐⭐⭐⭐ Exceeds all expectations *by M***E on June 25, 2022* Very impressive at bringing dead batteries back to life. I thought the '9 step' feature would be a gimmick, but it proved me wrong. Being able to select between 6V and 12V allows the charger to push the proper voltage. This 'little' charger brought a battery back up to 12V, where other 'big' chargers (Shumacher75) errored out. I'm using it to charge and maintain a modified power wheel with a 36ah 12V (3-12s in parallel). ## Frequently Bought Together - ENERGIZER 4-Amp 6V/12V Auto Charger, 9-Step Smart Battery Maintainer, Trickle Charger w/ LCD Display - ExpertPower 12v 9ah Sealed Lead Acid Battery with F2 Terminals (.250")/2 Pack - IZTOSS 12 V-24 V Universal LED Display Digital Voltmeter Measure Voltage 7-28 V with Low Voltage Alarm Car Motorcycle Auto Truck --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/33587130-energizer-4-amp-6v-12v-auto-charger-9-step-smart](https://www.desertcart.pl/products/33587130-energizer-4-amp-6v-12v-auto-charger-9-step-smart) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-12*