Query: When should a deep-cycle battery be used?
Context: Deep-cycle batteries are used when 50% or more of the capacity is used per cycle. The most common use of deep-cycle batteries is in applications that require deep, repetitive drain, like powerful car audio systems, trolling motors, golf carts, electric wheelchairs, or RV house power sources. Public safety and high performance vehicles are other applications that call for the special characteristics of deep-cycle batteries.