Our products' Lithium Battery warranty is 5 years and can be used in household appliances, consumer electronics, power systems, solar energy storage systems, uninterruptible power supplies, etc. The battery size is 18650. We have CE and CE certifications. Origin is China Weight 86kg/150kg/150kg Charge rate up to 100% Discharge rate up to 90% Storage type is standard, solar color is gray Size: 775*563*316 / 740*693*461 Housing material is aluminum OEM: fully support installation type Maintenance-free lithium battery for portable controller type MPPT.