Hi
I’m making a fancy dress project using an Adafruit Gemma and a strip of programmble LEDs.
All working well off the laptop and I now need a battery to run it for the event. I found a 1200mAh Lipo one on eBay and bench tested it for a day. It seemed to work OK, ran for about 7 hours which is enough for me and then ran out of juice. I checked the battery with a multimeter and it was down at 2.88v which I think is too low for Lipo to recover from. I can’t get the thing to charge using my Adafruit Micro Lipo charger. After a whole day it was only up to about 3.2v.
I guess I’ve either bought the wrong kind of battery or it was cheap rubbish - or maybe my whole concept is flawed?
Can anyone recommend a suitable battery/charger combo to power an Arduino + LEDs for a day that won’t discharge itself too much? I’ve seen this but on the face of it it’s the same spec as the thing I got off eBay. I’m in the UK so can’t easily buy Adafruit direct.
many thanks in advance