In stock demilitarized form Humvees usually have very few items to drain battery power. This is especially true when the temperature is below about 60 degrees F. The glow plugs and big 24v starter draw a LOT of current when starting a HMMWV. The batteries need to be built solidly enough to survive months and years of abnormally high vibration and physical shock loads without the internal plates or battery posts shaking loose. ![]() Even if you only drive on paved roads the batteries will be exposed to more vibration and jarring forces than in your typical civilian vehicle. Loose battery connectors cause glorious showers of sparks that can catch the Humvee on fire. The ability to secure the batteries so they don’t move AT ALL in the battery box is critical!Įven a little battery movement will stress the battery connectors, cables, and will work the connectors loose. While many large 12v auto batteries have the Cold Cranking Amps (CCA) to start a HMMWV, there are a few other considerations that are important. However, military vehicles are designed to operate in harsher environments than your typical civilian vehicle. Humvee batteries are essentially just big 12v automotive batteries. Humvee Upgrade: Best HMMWV Batteries Why your HMMWV batteries matter Camping Chat – Hammock Hangin’ With Pickl – Weekly Live, Interactive Shows. ![]()
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