# BPI-M2 Ultra 3.7V lithium battery interface

![](https://4206255271-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M2HWtRGSle2JoRWmwsz%2F-M2HWva6YC36keljqeN9%2F-M2HXPcajMT7Lb38YwwW%2FBPI-M2%2B%20ultra%203.7V.JPG?generation=1584080218669116\&alt=media) so you can use this interfact connect 3.7V lithium battery.

SCH:

![](https://4206255271-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M2HWtRGSle2JoRWmwsz%2F-M2HWva6YC36keljqeN9%2F-M2HXPcc7iby0nyQ159S%2Fbaterry.png?generation=1584080218162417\&alt=media)

battery interface spec:

<https://drive.google.com/file/d/0B4PAo2nW2KfnSmVuVDhQc0NLdG8/view?usp=sharing>

**BPI-M2 Ultra test 3.7V lithium battery interface with Ubuntu linux**

Lithium battery discharge

![](https://4206255271-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M2HWtRGSle2JoRWmwsz%2F-M2HWva6YC36keljqeN9%2F-M2HXPcee8ODu0ggc7Gb%2FBPI-M64%20test%203.7V%20lithium%20battery%201.jpg?generation=1584080218445752\&alt=media)

Battery Charger

![](https://4206255271-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M2HWtRGSle2JoRWmwsz%2F-M2HWva6YC36keljqeN9%2F-M2HXPcgdp6wkCy6NZ3J%2FBPI-M64%20test%203.7V%20lithium%20battery%202.jpg?generation=1584080218400658\&alt=media)

Lithium battery charger 100%

![](https://4206255271-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M2HWtRGSle2JoRWmwsz%2F-M2HWva6YC36keljqeN9%2F-M2HXPciStips-me7jYz%2FBPI-M64%20test%203.7V%20lithium%20battery%203.jpg?generation=1584080218182683\&alt=media)