Help in constructing a battery charger
I need some help constructing a circuit to charge a lead acid battery. The ratings of the battery are: 12v, 7Ah(Or so).
The circuit must have the following features:
-> Must be fairly simple (Considering the fact that i don't get all the components easily in the place i live, not even online)
-> Must automatically cutoff when the battery is fully charged(Or near full).
-> Must also have an indicator, (like the ones we have in a digital camera battery charger, which shows RED LED=Charging, GREEN LED=Full, something like that).
-> Charging times can be fairly reasonable (Few hours for a full charge sounds reasonable).
-> Hopefully, some explanation on how the circuit works. ;)
Thanks in advance :)