Can I use normal car batteries (lead acid type) with the solar system?
It is not recommended that car batteries be used for solar applications. The best option is to use VRLA – AGM type Deep Cycle batteries, which are sealed and maintenance free. These also allow for longer life (5-8 years) and are able to sustain heavier loads. These VRLA Deep Cycle batteries also allow for discharge up to 60% against 20% for the car batteries.