Why you need BATTERY ISOLATOR

Many vehicles and other types of equipment have multiple batteries: one to start the engine and others to power accessories. To understand the problem of multi-battery drain and how a BATTERY ISOLATOR prevents it, think of electricity as water. Electric current is equal to the flow of water, and voltage is equal to the pressure. The alternator pumps water current (water) into the batteries (storage tanks). The current then flow through the wires (pipes) to the accessories. It's important to think of batteries as storage tanks. If a fully charged battery is connected directly parallel with discharged or empty battery, the voltage pressure in the full battery will force its current into the empty battery until the current stored in both batteries reaches a common level. The discharged battery will always rob power from a charged battery. So, no matter how many batteries you have on your vehicle, the accessories connected to one will draw power from the other batteries in the circuit. This is the problem of multi-battery drain. And if it's allowed to continue unchecked, it can leave you stuck with dead batteries and an engine that won't start...all when you least expect it.