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The MHPOWOS 220W is a folding monocrystalline solar panel with an integrated MPPT controller and a built-in kickstand, aimed at campers, van lifers and off-grid users who need portable power. It claims up to 23.5% cell efficiency and puts out 48V open-circuit, so it pairs with solar generators and charge controllers that accept high input voltage. The 7-in-1 cable covers several connector types, which saves buying adapters. At around 5.85 kg folded to roughly 23.5 x 21.25 x 2.3 inches, it is heavier and bulkier than 100W-class panels, so it suits car and basecamp use more than backpacking.
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Lowest price we've seen: $71.49 on Nov 9 at AliExpress. Tracked across 2 stores since Nov 9.
Owners rate it highly, praising build quality and charging speed for its size. Complaints center on weight and on output dropping in partial shade.