The Peak Power Pack is a complete replacement for heavy lead-acid batteries that require high currents in a short period of time. Since it was developed primarily for campers, it is equipped with a built-in charger that allows you to charge it using the car's electrical system while you are on the road with the camper. This way, the pack is fully charged by the time you get to the campsite. If necessary, you can also charge it using an adapter from a mains socket. It can also be charged using a solar panel.