I need to connect a 12 volts DC lead acid battery to a circuit. The circuit draws 100mA and works at 3.3V. I am planning to use 7805 to drop the voltage from 12 to 5 volts.
The first thing is that how can I bypass the 7805 while charging the battery?
The thing is that I also needs to recharge the battery too. The Circuit and the battery charger both have same input power connector on them and the battery has the mating connector for both of them.