BUILT-IN DUAL-BATTERY SYSTEM vs PORTABLE POWER PACK

Which is best? An installed dual-battery system, or a portable unit?   Dual-battery systems generally come in two formats:   1)  Installed units that are permanently mounted within your vehicle, or… 2)  Those packaged within a portable power pack / battery box.   If you’re having trouble deciding which solution is right for you, here’s …

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