The name says it all because this gizmo does it all... Plug it into a cigarette lighter 12V DC jack in your car, truck, RV or drone and it can recharge Batteries or run Lumedyne Power Packs.
Plus, if that were not already enough, it has a separate Battery Gauge and 6 pin connector that works independent of power to test Batteries.
It's small, lightweight, versatile, and capable. Plus, with a 20 foot cable it is able to reach beyond your front seats when you want it to.