Hi, pls help me to explain the differience between
+ AA battery and (Lithium,Niken..)
+ How much voltage applied at 1 AA Battery to charge them? can I use mobile phone charger?
The AA, AAA ... is the size of the battery. The type of chemistry can be ni-cd, lithium NiMh. If the battery is alcaline you can't recharge it otherside you must use a recharge system for the type of battery that you use.
There is some ic that with few comonent do this for example mcp73828 from microchip but there is a lot of this.