
I bought it to charge an rv (marine) battery. My rv is in storage and will eventually need a new battery, because it can't hold a charge. Right now, I am renovating it, so I occasionally go down and need to use the battery to extend and retract the slides. I keep the battery at home and charge it up before going down to the rv, then bring the battery back with me.
![megawise car battery jump starter - 1500a peak 16800mah portable power pack for up to 7l gas or 5l diesel engines, dual usb outputs, auto battery booster [2021 upgraded model] logo](https://images.revain.org/blob/wysd4jyw_1f428fea72@128x128.jpg)
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