OSCAL PowerMax 6000 (portable power station with expandable battery): our review

A wet evening at a motorhome stopover can make the available electricity feel rather precious. With 3600 Wh of stored energy, the PowerMax 6000 offers a very large reserve for that setting, or for selected appliances during a power cut. We put it among the best on the site overall, particularly for readers who want substantial storage and have somewhere sensible to keep it.

Energy is only part of the decision. A generous reserve does not automatically mean every appliance can run together, and usable energy depends on conversion losses and what you connect. Would you prioritise the freezer, your work laptop or lighting? Start with the jobs that matter. Support for an expansion battery offers scope to increase storage later, although the standard reserve already gives this station a clear purpose beyond keeping phones charged.

Loading means lifting 46 kg. That is the practical obstacle to settle before picturing this battery beside your motorhome. Built-in wheels help with moving it along a suitable surface, but getting it into a vehicle remains a different job. Plan that move before departure, especially if the boot is already crowded with folding chairs and everything somebody insisted might come in handy.

The wheels deserve their place. They suit a station that might move from storage to a sheltered working position, then stay there while it supplies connected equipment. Loose gravel, steps and a muddy camping pitch deserve thought when choosing that position. The sensible arrangement is a short, manageable route with room to manoeuvre. Your camping chairs have already occupied enough of the packing discussion; the electricity supply needs a plan of its own.

Solar compatibility becomes especially interesting with a maximum input of 2400 W. That is a high ceiling, with scope to connect several suitable panels. At a campsite without electric hook-up, a sunny morning could become an opportunity to replenish the battery while breakfast gives way to the day's plans.

That ceiling describes what the station can accept, not what panels will continuously produce. Sunshine, orientation and the chosen panels all affect the result. A generous input cannot negotiate with a cloud. Leave enough suitable space for the panels and keep expectations tied to the conditions outside.

For a motorhome that spends time parked, this is an appealing part of the specification. Solar can contribute to replenishing stored energy between uses, with the benefit depending on the actual setup and weather. It does not justify promising a fixed charging time.

The EZVIZ PS600 is better suited to frequent carrying, so it deserves a place in your decision if moving camp regularly is central to the trip. The EZVIZ PS600 is less well rated overall in our assessment. That distinction matters: the right choice for repeated moves need not be the model we rate most highly overall.

For equipment you want to leave connected, 4 sockets provide plenty of mains connection points, though their number does not establish how much equipment can run together. A DC5521 socket adds a connection for compatible DC equipment. That is useful flexibility when a laptop and lamps need different connections around a motorhome.

The battery uses LiFePO4 chemistry, and Wi-Fi supports app connectivity. We like the package for readers who park up and make use of their equipment without constantly packing it away. Leave the laptop plugged in at the table, put a lamp where you will read and give the available connections a practical purpose.