# Source: https://learn.adafruit.com/li-ion-and-lipoly-batteries.md

# Li-Ion & LiPoly Batteries

## Overview

If you want to take your project portable you'll need a battery pack! For beginners, we suggest alkaline batteries, such as the venerable AA or 9V cell, great for making into larger multi-battery packs, easy to find and carry plenty of charge. If you want to go rechargable to save money and avoid waste, NiMH batteries can often replace alkalines. Eventually, however you may want to upgrade to the shiniest new technology - rechargable lithium ion/polymer batteries.![](https://cdn-learn.adafruit.com/assets/assets/000/000/976/medium800/components_batts.jpg?1396767532)

- [Next Page](https://learn.adafruit.com/li-ion-and-lipoly-batteries/rechargeable-lithiums-names.md)

## Featured Products

### Adafruit Micro Lipo - USB LiIon/LiPoly charger

[Adafruit Micro Lipo - USB LiIon/LiPoly charger](https://www.adafruit.com/product/1304)
Oh so adorable, this is the tiniest little lipo charger, so handy you can keep it any project box! Its also easy to use. Simply plug in the gold plated contacts into any USB port and a 3.7V/4.2V lithium polymer or lithium ion rechargeable battery into the JST plug on the other end. There are...

In Stock
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[Related Guides to the Product](https://learn.adafruit.com/products/1304/guides)
### USB LiIon/LiPoly charger

[USB LiIon/LiPoly charger](https://www.adafruit.com/product/259)
This is a Lithium Ion and Lithium Polymer battery charger based on the [MCP73833](http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en027785). It uses a USB mini-B for connection to any computer or 'USB wall adapter'. Charging is performed in three stages: first a...

In Stock
[Buy Now](https://www.adafruit.com/product/259)
[Related Guides to the Product](https://learn.adafruit.com/products/259/guides)
### USB/DC  Lithium Polymer battery charger 5-12V

[USB/DC  Lithium Polymer battery charger 5-12V](https://www.adafruit.com/product/280)
Charge your single-cell lithium ion/polymer battery any which way you like with this board. Have a USB connection? No problem, just plug into the miniUSB connector. Only have a wall adapter? Any standard 2.1mm DC adapter which puts out 5 to 12VDC will work fine. If both are plugged in, the...

No Longer Stocked
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[Related Guides to the Product](https://learn.adafruit.com/products/280/guides)
### Lithium Ion Battery Pack - 3.7V 6600mAh

[Lithium Ion Battery Pack - 3.7V 6600mAh](https://www.adafruit.com/product/353)
Need a massive battery for your project? This lithium-ion pack is made of 3 balanced 2200mAh cells for a total of 6600mA capacity! The cells are connected in parallel and spot-welded to a protection circuit that provides over-voltage, under-voltage, and over-current protection.

Each cell...

In Stock
[Buy Now](https://www.adafruit.com/product/353)
[Related Guides to the Product](https://learn.adafruit.com/products/353/guides)
### Lithium Ion Battery Pack - 3.7V 4400mAh

[Lithium Ion Battery Pack - 3.7V 4400mAh](https://www.adafruit.com/product/354)
Need a big battery for your project? This lithium-ion pack is made of 2 balanced 2200mAh cells for a total of 4400mA capacity! The cells are connected in parallel and spot-welded to a protection circuit that provides over-voltage, under-voltage, and over-current protection.

Each cell can...

In Stock
[Buy Now](https://www.adafruit.com/product/354)
[Related Guides to the Product](https://learn.adafruit.com/products/354/guides)
### Lithium Ion Polymer Battery - 3.7v 2500mAh

[Lithium Ion Polymer Battery - 3.7v 2500mAh](https://www.adafruit.com/product/328)
Lithium-ion polymer (also known as 'lipo' or 'lipoly') batteries are thin, light, and powerful. The output ranges from 4.2V when completely charged to 3.7V. This battery has a capacity of **2500mAh** for a total of about 10 Wh. If you need a smaller battery, <a...></a...>

In Stock
[Buy Now](https://www.adafruit.com/product/328)
[Related Guides to the Product](https://learn.adafruit.com/products/328/guides)
### Lithium Ion Polymer Battery - 3.7v 1200mAh

[Lithium Ion Polymer Battery - 3.7v 1200mAh](https://www.adafruit.com/product/258)
Lithium-ion polymer (also known as 'lipo' or 'lipoly') batteries are thin, light, and powerful. The output ranges from 4.2V when completely charged to 3.7V. This battery has a capacity of 1200mAh for a total of about 4.5 Wh. If you need a larger battery, <a...></a...>

In Stock
[Buy Now](https://www.adafruit.com/product/258)
[Related Guides to the Product](https://learn.adafruit.com/products/258/guides)
### Lithium Ion Polymer Battery - 3.7v 500mAh

[Lithium Ion Polymer Battery - 3.7v 500mAh](https://www.adafruit.com/product/1578)
Lithium-ion polymer (also known as 'lipo' or 'lipoly') batteries are thin, light, and powerful. The output ranges from 4.2V when completely charged to 3.7V. This battery has a capacity of 500mAh for a total of about 1.9 Wh. If you need a larger (or smaller!) battery, <a...></a...>

In Stock
[Buy Now](https://www.adafruit.com/product/1578)
[Related Guides to the Product](https://learn.adafruit.com/products/1578/guides)

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