Flexopower believes that its lithium polymer technology has the potential to totally disrupt the dual-battery market, eventually replacing it altogether. It’s a bold statement, but the Lithium444 Power Pack is definitely headed in the right direction. It features AC 220V ultra pure sine wave, 400W continuous, and 800W surge output. Fully charged, it can run a 73l fridge for a day, and it weighs just 5.3kg. It can also be charged via 12V or solar panel, independent of a dual-battery system. Keep an eye on this tech!