How Connect Two Batteries Together. The batteries are now in a parallel connection. Attach the positive terminals together and the negative - terminals together.
These are the batteries used to power the electrical system of motorcycles cars and trucks. To connect batteries in a series use jumper wire to connect the negative terminal of the first battery to the positive terminal of the second battery. Also connect the negative cable lug from the engineground and the negative accessory wire to either of the negative battery posts and make sure all terminal nuts are tight.
12V RV batteries should always be wired in parallel because you want to keep the voltage the same but increase the amp hours.
Connecting Batteries in Series and Parallel. 2 gel 2 lead acid 2 deep cycle and so on. To connect batteries in a series use jumper wire to connect the negative terminal of the first battery to the positive terminal of the second battery. Use another set of cables to connect the open positive and negative terminals to your application.
