---
product_id: 171269027
title: "9V Rechargeable Li-ion Battery,Kratax 850mAh 9V Battery Rechargeable,2 Pack 9V Batteries with Protection Board for Smoke Detector Alarm,Fire Alarm,Multimeter,Radio Microphone,Kids Toys Battery"
brand: "kratax"
price: "50759CFA"
currency: XOF
in_stock: true
url: https://www.desertcart.sn/products/171269027-9v-rechargeable-li-ion-battery-kratax-850mah-9v-battery-rechargeable
store_origin: SN
region: Senegal
---

# 2.3A output current 850mAh capacity 500+ recharge cycles 9V Rechargeable Li-ion Battery,Kratax 850mAh 9V Battery Rechargeable,2 Pack 9V Batteries with Protection Board for Smoke Detector Alarm,Fire Alarm,Multimeter,Radio Microphone,Kids Toys Battery

**Brand:** kratax
**Price:** 50759CFA
**Availability:** ✅ In Stock

## Summary

> 🔌 Power Up Your Life with Kratax!

## Quick Answers

- **What is this?** 9V Rechargeable Li-ion Battery,Kratax 850mAh 9V Battery Rechargeable,2 Pack 9V Batteries with Protection Board for Smoke Detector Alarm,Fire Alarm,Multimeter,Radio Microphone,Kids Toys Battery by kratax
- **How much does it cost?** 50759CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/171269027-9v-rechargeable-li-ion-battery-kratax-850mah-9v-battery-rechargeable)

## Best For

- kratax enthusiasts

## Why This Product

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

## Key Features

- • **Safety First:** CE/RoHS certified with multi-protection features for worry-free overnight charging.
- • **Rapid Recharge:** Fully charge 4 batteries in just 4 hours, keeping your devices powered up and ready.
- • **Eco-Friendly Power:** Rechargeable over 500 times, reducing waste and saving money.
- • **Independent Charging:** Charge each battery separately with a USB Type-C cable for ultimate convenience.
- • **Versatile Compatibility:** Perfect for a wide range of devices from smoke detectors to remote control toys.

## Overview

The Kratax 9V Rechargeable Li-ion Battery offers a robust 850mAh capacity, allowing for over 500 recharge cycles. Designed with safety in mind, it features multiple protection mechanisms and is compatible with a variety of devices, making it an essential power source for both everyday and specialized electronics.

## Description

Full description not available

## Features

- ❤9V Lithium-ion Rechargeable Battery: Recycle＞500 times; Kratax new 9V 850mAh lithium-ion rechargeable battery provides longer use time per charge, with larger capacity and ultra long lasting. Last 3 times longer than NiMH Battery, Alkaline Battery
- ❤Multi-Protection: CE/RoHS Certified. Built-in Protection over-charge, over-discharge, short-circuit, reverse polarity, over-voltage, over-current and over-heated, to make sure the safety for over-night charging
- ❤Applicable equipment: Suitable for Transistor Radio, Walkie-talkie, Remote Control Toys, Smoke Alarm, Smoke Detectors, Guitar, Wireless Microphone, Multimeter, Cameras, Alarm Clocks, Portable Radios and other electronic and medical equipment
- ❤Independent charging Channels: One battery can be charged separately, without the need to charge in pairs. With USB Type-C charging cable that can fully charge 4 batteries in about 4 hours. The actual voltage of full charge is 8.4V-8.7V, not 9V, so that the output current can reach 2.3A
- ❤Package: 2 × 9v batteries(Charger not included)

## Product Details

- **Number of batteries:** 2 9V batteries required. (included)
- **Brand:** Kratax
- **Battery cell composition:** Lithium Ion
- **Battery capacity:** 850 Milliampere Hour (mAh)
- **Recommended uses for product:** Smoke detector alarm, Fire Alarm, Multimeter, Radio Microphone,

## Images

![9V Rechargeable Li-ion Battery,Kratax 850mAh 9V Battery Rechargeable,2 Pack 9V Batteries with Protection Board for Smoke Detector Alarm,Fire Alarm,Multimeter,Radio Microphone,Kids Toys Battery - Image 1](https://m.media-amazon.com/images/I/61Dw3d-boFL.jpg)
![9V Rechargeable Li-ion Battery,Kratax 850mAh 9V Battery Rechargeable,2 Pack 9V Batteries with Protection Board for Smoke Detector Alarm,Fire Alarm,Multimeter,Radio Microphone,Kids Toys Battery - Image 2](https://m.media-amazon.com/images/I/713GrgA8sFL.jpg)
![9V Rechargeable Li-ion Battery,Kratax 850mAh 9V Battery Rechargeable,2 Pack 9V Batteries with Protection Board for Smoke Detector Alarm,Fire Alarm,Multimeter,Radio Microphone,Kids Toys Battery - Image 3](https://m.media-amazon.com/images/I/71b3lspuq+L.jpg)
![9V Rechargeable Li-ion Battery,Kratax 850mAh 9V Battery Rechargeable,2 Pack 9V Batteries with Protection Board for Smoke Detector Alarm,Fire Alarm,Multimeter,Radio Microphone,Kids Toys Battery - Image 4](https://m.media-amazon.com/images/I/711jtQS71PL.jpg)
![9V Rechargeable Li-ion Battery,Kratax 850mAh 9V Battery Rechargeable,2 Pack 9V Batteries with Protection Board for Smoke Detector Alarm,Fire Alarm,Multimeter,Radio Microphone,Kids Toys Battery - Image 5](https://m.media-amazon.com/images/I/71DBzlon-vL.jpg)

## Available Options

This product comes in different **Size Name** options.

## Questions & Answers

**Q: Got 4 batteries pluged in charger, all 4 led are flashing both green and red, where when pluged just 3 batteries there is 3 solid red lights.That ok?**
A: This means that your USB port is not supplying enough amps for the number of batteries charging.  This will happen with say an older usb power adaptor.  Try (i) charging less batteries at one time (ii) getting a new power adaptor that is rated for usb c or (iii) just plugging it into something that can supply enough power such as a PC.

**Q: Will they discharge if left connected to the unplugged charger? When not in use, would be handy if I can leave connected to protect the terminals.**
A: No definitive answer on this in my experience if kept on the charger and briefly plugged back in prior to use they may show charging briefly (5_10 mins max) but this may be due to lithium batteries normal nominal loss while stored (much less than nic cads) rather than any effect of the storage being in the charger.

**Q: Are these batteries the same measurements as everyday standard 9 volt batteries. Please.**
A: I only use these type of 9volt batteries so I couldn't say if they were the same measurements as alkaline ones. They last well until needing recharged

**Q: can you charge these on a standard multi battery mains charger**
A: Yes, assuming there are the appropriate "press-stud" contacts on your multi-charger. This is exactly what I have.

Additionally, the batteries arrived with a coupon to claim a free charger, specifically for the 9 volt batteries.

## Frequently Bought Together

- 9V Rechargeable Li-ion Battery,Kratax 850mAh 9V Battery Rechargeable,2 Pack 9V Batteries with Protection Board for Smoke Detector Alarm,Fire Alarm,Multimeter,Radio Microphone,Kids Toys Battery
- 4-Pack 1.5V Rechargeable Lithium AAA Batteries, Kratax 1100mWh High-Capacity Long-Lasting Triple A Battery,1H Ultra Fast Charge,Recharge Cycles Up To 1500x,Constant Output
- Kratax Rechargeable AA Lithium 1.5V Batteries - High-Capacity 3500mWh Long-Lasting, Low Self-Discharge, 1600 Cycles, Constant Output for Blink, Household Office Devices(4 Pack AA Batteries Only)

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-01-23*