Which lithium polymer battery is best to use with the TinyML Board?
These batteries have been tested with the TinyML board.
https://www.digikey.com/en/products/detail/tinycircuits/ASR00011/8680975
https://www.digikey.com/en/products/detail/tinycircuits/ASR00012/9808769
The charging current and other parameters should be set appropriately as per the battery specifications.