---
product_id: 694119994
title: "Rechargeable 9v Batteries USB 9 Volt Battery for Smoke Alarms 3700 mWh 9v Lithium Battery with 2-in-1 USB-C Charging Cable and LED Charge Indicator, 2-Pack"
brand: "cardiens"
price: "104 zł"
currency: PLN
in_stock: true
url: https://www.desertcart.pl/products/694119994-rechargeable-9v-batteries-usb-9-volt-battery-for-smoke-alarms
store_origin: PL
region: Poland
---

# 1.5 hours fast charge 3700 mWh capacity 1200+ recharge cycles Rechargeable 9v Batteries USB 9 Volt Battery for Smoke Alarms 3700 mWh 9v Lithium Battery with 2-in-1 USB-C Charging Cable and LED Charge Indicator, 2-Pack

**Brand:** cardiens
**Price:** 104 zł
**Availability:** ✅ In Stock

## Summary

> 🔌 Power Up Your Peace of Mind!

## Quick Answers

- **What is this?** Rechargeable 9v Batteries USB 9 Volt Battery for Smoke Alarms 3700 mWh 9v Lithium Battery with 2-in-1 USB-C Charging Cable and LED Charge Indicator, 2-Pack by cardiens
- **How much does it cost?** 104 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/694119994-rechargeable-9v-batteries-usb-9-volt-battery-for-smoke-alarms)

## Best For

- cardiens enthusiasts

## Why This Product

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

## Key Features

- • **Safety First:** Explosion-proof & leak-proof technology
- • **Versatile Use:** Perfect for smoke alarms, toys, and more
- • **Charge with Ease:** USB-C cable for simultaneous charging
- • **Long-Lasting Power:** 3X longer life than standard batteries
- • **Eco-Friendly Choice:** Reduce waste with 1200+ recharges

## Overview

This 2-pack of rechargeable 9V lithium batteries offers a robust 3700 mWh capacity, allowing for longer usage in smoke alarms and other devices. With a USB-C charging cable, you can charge both batteries simultaneously in just 1.5 hours. Designed for safety and longevity, these batteries can be recharged over 1200 times, making them an eco-friendly and cost-effective choice.

## Description

Rechargeable 9v Batteries USB 9 Volt Battery for Smoke Alarms 3700 mWh 9v Lithium Battery with 2-in-1 USB-C Charging Cable and LED Charge Indicator, 2-Pack

## Features

- 【USB-C charging cable enables easy charging】 You can charge 2 batteries simultaneously or individually, just plug it into a laptop, power bank, wall charger or car charger. Fast charging time is 1.5 hours, and the 9v rechargeable batteries have indicator lights that blink when charging and go solid when done
- 【3700 mWh provides longer battery life】 It lasts 3X longer than other 9v battery for smoke detector, and don't worry about running out of power while it working
- 【Recharged at least 1200+ times】 Multiple charges barely lose capacity, in the long run they will save you money on battery purchases and also reduce your environmental impact throwing away disposables, comes with a small carrying case too
- 【Advanced explosion-proof & leak-proof technology】 After a number of safety tests, the smoke detector battery is as safe as the built-in charger for cell phones and computers, and you don't have to worry about harming your expensive electronic devices
- 【Versatile rechargeable 9v batteries】 They holds a steady 9 volt, works for smoke detectors/fire alarms, guitars, wireless microphones, metal detectors, toy cars, thermometers, garage door openers, medical devices, etc. PS:The battery is not fully charged when it leaves the factory. Please fully charge it before use.

## Product Details

- **Number of Batteries:** 2 AA batteries required. (included)
- **Brand:** CARDIENS
- **Battery Cell Composition:** Lithium Ion
- **Battery Capacity:** 3700 Milliamp Hours
- **Recommended Uses For Product:** Electric guitars, Fire alarms, Metal detectors, Smoke detectors, Wireless microphones

## Images

![Rechargeable 9v Batteries USB 9 Volt Battery for Smoke Alarms 3700 mWh 9v Lithium Battery with 2-in-1 USB-C Charging Cable and LED Charge Indicator, 2-Pack - Image 1](https://m.media-amazon.com/images/I/71wAsozPQAL.jpg)

## Available Options

This product comes in different **Item Package Quantity** options.

## Frequently Bought Together

- CARDIENS Rechargeable 9v Batteries USB 9 Volt Battery for Smoke Alarms 3700 mWh 9v Lithium Battery with 2-in-1 USB-C Charging Cable and LED Charge Indicator, 2-Pack
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- CARDIENS USB Rechargeable AA Batteries 2800mWh Rechargeable Lithium AA Batteries 1.5V Double A Battery with 4-in-1 USB-C Charging Cable and LED Charge Indicator, 4-Pack

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**Shop now:** [https://www.desertcart.pl/products/694119994-rechargeable-9v-batteries-usb-9-volt-battery-for-smoke-alarms](https://www.desertcart.pl/products/694119994-rechargeable-9v-batteries-usb-9-volt-battery-for-smoke-alarms)

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-01-26*