Are there any caveats for using this item aside from the under/over voltage protection lacking for batteries. Like does a battery always have to be connected for this work? Is there a sequence for connecting/disconnecting power/battery? Are there touchpoints on the item that will short out if touched by a finger or something while pulling out a tight connector?
You do need a battery for the LiPo Charger/Booster to work, any single cell lipo with 1Ah capacity and up will work. Just make sure you observe the correct polarity when connecting the battery.
At these voltages, you do not need to worry about fingers shorting anything out so that’s noting to be concerned about. Don’t let conductive items like metal touch the pad on the board though, those could short things out and damage the board.
Thank you for the response. So am I to understand that the order of operations would be attach a battery to the JST connector, ensuring correct polarity THEN attaching the power to the MicroUSB. And the reverse for disconnecting, remove power first THEN remove the battery.
Yes, you want the battery attached first, but I don’t believe anything will hurt the board if you disconnect the battery while the USB is connected. Worst case, you’re not able to source enough current for whatever load is attached.
There’s really no reason to disconnect the battery anyway, you could just leave it connected all the time and pull EN low when you want to shut down power to your load. This should all be covered in the [url+https://learn.sparkfun.com/tutorials/sp … okup-guide]hookup guide.