Honestly i have regret buying that company's device sbv 4.6kw superbase absoliute discrase only problems what ever you do charging fully(from solar or not)froze,anytime can be frozen.need restart all the time someone must be by the side.Ridicules company.Update is comming it froze need to restart again sombody by the side.Zendure must understand we need reliable devise!!!We power up important devices from it!!!!!