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Powering your board from battery

All Unexpected Maker development boards come with support for using a battery to power your projects as well as the ability to charge your battery off the USB connector (or 5V pin if you are using an external 5V power supply).

The TinyPICO, TinyS2 & TinyS3 come with a separate JST PH connector that you can solder onto the bottom of the board, as well as a VBAT header pin next to a GND pin to allow you to connect a battery via the headers.

The FeatherS2, FeatherS2 Neo, FeatherS3 and ProS3 come with a battery connector on the board. The Feather boards have a JST PH connector and the ProS3 has a PicoBlade connector. Both also have a VBAT header pin allow you to connect a battery via the headers.

The TinyPICO Nano and NanoS3 both have a VBAT pin on the headers you can use on your carrier board to allow you to hook up a battery connector if required.

You can use any size, single cell Li-Po battery to power your Unexpected Maker boards. Obviously, the larger the mAH rating of the battery, the longer it will last, but the longer it will take to charge. What is the charge rate on my board?

Please use LiPo-Batteries with charge protection included on them. Most hobby RC batteries do not have under voltage protection, and if a battery discharges too much, it can damage it and it might never be able to hold a proper charge again.

NOTE: When connecting a battery to your Unexpected Maker board, please check the polarity of the battery, as not every battery is wired the same way. The IC I use for charging does have in-built reverse voltage protection, but it’s better not to tempt fate!

battery chemistry, lipo, 1s lipo, 1 cell, single cell

Updated on August 19, 2023

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