When installing a new battery bank, check and record each battery’s voltage, specific gravity (SG), and polarity. This will provides a basis for later comparison. Next, fully charge the battery bank according to the manufacturer’s recommendations. This “initialization” or “activation” charge ensures that the battery cells start at an equal voltage and that all sulfation is removed from the plates. Different manufacturers recommend different charge parameters for the initialization charge, so be sure to check the specifications for your particular battery.