How do I conect more batteries to give me more capacity?


For 240 volts through an inverter, connect the batteries in parallel: negative to negative, positive to positive.

To increase capacity for 12 volts, connect the batteries in parallel: negative to negative, positive to positive.

For 24 volt, 36 volt and 48 volt systems, connect in series: positive - negative

Never mix battery capacities, this will cause over charging on one battery and insufficient charge on the other. A 100 amph should be connected to 100 amph. If one battery is significantly older than the other, it can pull the newer battery down as a result of lead sulphation.