12v Batteries Diagram. This guide gives you the info you need to pick your compromise. Simple 12 volt battery charger circuit diagram designed by using few easily available components and this circuit is suitable for different types of batteries needs 12 volt.
The basic concept when connecting in series is that you add the voltages of the batteries together but the amp hour capacity remains the same. All designs should be checked and installed by a qualified auto electrician. Two 12 volts lead acid batteries connected in series.
The following wiring diagram shows that the two 12v 10a 120w solar panels connected in parallel will charge the two 12v 100ah parallel connected batteries as well as power up the ac load through batteries and inverter during the day in normal sunshine.
Now since i have 3 batteries the charging current is divided equally and each battery is getting under 4amp. It takes 6 cells connected in series. I have a 800 va inverter and this time i connected three 75 amps batteries in parallel. All wiring should be done according to equipment datasheets and manuals.