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- Lithium Ion Battery - 850mAh
These are very slim, extremely light weight batteries based on Lithium Ion chemistry. Each cell outputs a nominal 3.7V at 850mAh! Comes terminated with a standard 2-pin JST-PH connector - 2mm spacing between pins. These batteries require special charging. Do not attempt to charge these with anything but a specialized LiPo charger.
Battery includes built-in protection against over voltage, over current, and minimum voltage. Please use caution when using this battery in wearable projects. When using conductive thread, a short in the thread can create sparks and heat. We recommend using coin cell batteries for beginners.
Note: This battery is not available to ship to Alaska or Hawaii, or through any express services (2-day, overnight), or internationally. This is temporary! Check out our blog post for more information. Additionally orders may take longer to process and therefore do not qualify for same-day shipping. Sorry for any inconvenience this may cause!
Note: This item is non-returnable. If this item arrives damaged or is not functioning properly, please do not hesitate to contact us to see if further actions may be taken.
- Excellent long-term self-discharge rates (<8% per month)
- Robust power source under extreme conditions (-25 to 60C)
- 1.75" x 1.37" (44.45 mm x 34.79 mm)
Lithium Ion Battery - 850mAh Product Help and Resources
Battery Technologies
February 6, 2013
The basics behind the batteries used in portable electronic devices: LiPo, NiMH, coin cells, and alkaline.
LiPo USB Charger Hookup Guide
May 1, 2014
How to charge your LiPo batteries with the USB LiPo charger. Plus how to modify your charger to set the charge current.
Sunny Buddy Solar Charger V13 Hookup Guide
October 13, 2014
How to hookup the Sunny Buddy: a solar-powered, MPPT (peak-power tracking), LiPo battery charger.
LilyPad Basics: Powering Your Project
September 24, 2018
Learn the options for powering your LilyPad projects, LiPo battery safety and care, and how to calculate and consider power constraints on your projects.
Adjustable LiPo Charger Hookup Guide
September 28, 2017
The SparkFun Adjustable LiPo Charger is a single-cell lithium polymer (LiPo) and lithium ion battery charger. Because it’s adjustable, this charger will be able to safely charge all of our singe-cell batteries.
LiPo Charger Plus Hookup Guide
May 30, 2019
This tutorial shows you how to hook up and use the SparkFun LiPo Charger Plus board.
LiPo Fuel Gauge (MAX1704X) Hookup Guide
February 23, 2023
Monitor your LiPo battery with the LiPo fuel gauge! In this tutorial, we will be using the MAX17043 and MAX17048 to monitor a single cell, LiPo battery over the Arduino Serial Monitor. We will also connect a display to view the output without the need to connect the microcontroller to a computer.
Single Cell LiPo Battery Care
March 16, 2023
This tutorial will go over how to safely charge, connect, disconnect, reinforcing the cables, and handle single cell LiPo batteries.
Core Skill: Electrical Prototyping
If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.
Skill Level: Noob - You don't need to reference a datasheet, but you will need to know basic power requirements.
See all skill levels
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Customer Reviews
3 out of 5
Based on 2 ratings:
4 of 4 found this helpful:
its a battery and it works
Ran my ESP32 Thing-based WiFi project continuously transmitting MPU and distance sensor values for 5.5 hours straight. I'm happy.
1 of 13 found this helpful:
Problems
I've tried three times to return or exchange these batteries received only an automated response and now you are asking me how well they are working out for me?? Come on.