3rd Party Battery
Anybody knows the specifics if one wants to use a 3rd party battery? I know it has to be a 3.7v Lithium Polymer battery, but does it need a PCM (Protection Circuit Module) or a specific charge current etc...?
You can use any 3rd party rechargeable lithium type battery. However, the MetaWear board is setup to charge at 90mA, so it may take a long time to charge batteries larger than 300mAh. At volume, MetaWear can be configured for up to 300mA charge current.
We absolutely recommend a battery with built-in PCM. During development this will prevent over-spec current draw and over discharge. MetaWear depends on the PCM to cut off the battery when it is fully discharged.
This site has lots of batteries you could use with MetaWear:
I use it often for small batch prototypes.
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