DEEP CYCLE - 6 VOLT BATTERIES. The DEKA PRO MASTER BATTERY will give you all the power you need for many years. The DEKA PRO MASTER BATTERY includes a variety of design features that allow easy watering and installation, faster maintenance turnaround times and longer cycle life. East Penn engineers completely redesigned every aspect of their original golf car battery to create a better product that is as durable and userfriendly as possible. The DEKA-PROMASTER BATTERY is made of our state-of-art manufacturing facilities, and subjected to over 250 rigorous quality control checks during every phase of production. 12 month pro rated warranty