![]() ![]() Many also use battery isolators to disconnect a battery that they are using as a backup. They’re needed in muti-battery systems where the batteries need to discharge or charge at different times.ĭepending on your system’s specific needs, you can use them to prevent both unintended and uneven battery discharge. To put it simply, these devices give users more control over their power systems. What Is the Purpose of Battery Isolators? ![]() Because our batteries charge so fast they can draw too much power from a conventional alternator. It also disconnects the power ever so often to prevent the alternator from overworking to charge our batteries. This unit will only charge the batteries when the engine is running and the voltage is safe. Here is an example of a Li-BIM isolator designed to work with our batteries. When the engine is off, the isolator quite literally isolates the second battery, allowing it to keep its charge. In the case of different battery chemistries, (like lead acid starting and lithium house batteries) you also do not want to connect them together. If the house batteried die then so will the starting battery. But when you turn the engine off, you don’t want the batteries to stay connected. Most often, however, these devices protect a secondary or backup battery from any unnecessary drain.įor example, when the engine is running, and the alternator is charging the starter battery, it’s also charging the secondary battery. It can disconnect a battery from a power system either for charging or discharging purposes. ![]() Do You Need a Battery Isolator for Dual Batteries?Ī battery isolator is a device that typically runs between a starter battery and a secondary battery.What Type of Battery Isolator Do I Need?.What Is the Purpose of Battery Isolators?. ![]()
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