I know this unit charges fast..My main reason for purchase is to hold my refrigerator at temp during a power outage and there are many in my area. I have yet to see how it hold up. I own another brand that hold well, but the downside is that it take HOURS to recharge like 6-10 hours. Hoping this brand does all it promises.
Thumbs up--If grid goes down Earth quake(Calif) or electrical grid terrorist need something big/strong 400W panel to get Max out of Calif sun to preserve refrig contents