I have a project in mind, that I was planning to use a Li-po to power, but I realised that the case I'm using has space for 2 AA batteries, so I was wondering how I could charge something like this: http://www.ebay.co.uk/itm/2x-14500-2500 ... SwbwlXA~Mg
The easiest way would be to simply pop the batteries out and use an external charger, but it would be nice to have it all internal.
If I did this, would it be sufficient to just put something like an LM7805 on the output? Assuming I get cells with protection built in.
What would I need to be able to charge batteries like these without removing them? I was planning to use this with a Li-po, would it still work?
http://www.banggood.com/37V-Liion-Batte ... 37201311DI