Rather than mess around with inverters or generators, he can simply use a DC-to-DC battery charger and his huge custom ... to swap the batteries for you, a DIY pack like this might be the easiest ...
Gadget Review on MSN5d
Get the NOCO GENIUSPRO25 Smart Car Battery Charger for $254.17 (originally $749.95) – $495.78 savingsVersatile and powerful battery charger supporting multiple voltages and battery types-ideal for automotive, marine, and ...
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