What is Depth of Discharge? DOD refers to how much of a battery’s capacity has been used. For instance, a battery that has been drained 30% has a 30% DOD, and 70% of its capacity remains.

  Nobody wants to start the spring boating season with a dead battery. It’s time-consuming and expensive – and let’s face it, you’d rather spend that time on the water. Follow this simple checklist to winterize your boat batteries – and be sure they’re ready for a great spring startup:

  Cold weather kills batteries -- slashes lifespan and capacity. But you can protect yourself from “Winter Battery Blues” -- and get more life and performance from your batteries.

  How are long-lasting batteries made? Join Solar Builder for a full factory tour, from raw material processing to battery assembly and shipping.

  Maintenance requirements vary by battery technology and may include cleaning battery terminals, checking and adjusting fluid levels, checking cell voltage, and equalizing batteries. Your battery manufacturer will share their recommendations. And with a few simple steps, you can avoid costly battery failures and technician visits -- and make maintenance easy, simple, and fun.