Go Green without Sacrificing Speed. Boasting 1024Wh and 1800W (Surge 2700W) output, DELTA2 pairs perfectly with our efficient 100W Solar panel, offers a 23% conversion rate. Charge up to 15 devices and enjoy a faster recharge: 5.1 hrs with two Solar Panels, and just 2.6 hrs with three. Built to Last 6x Longer. Its LFP battery chemistry makes for a portable power station with a 3000+ cycle life. Enough for years on end of use. With a sophisticated BMS, you can go easy knowing its an auto-regulating portable battery to keep you safe.