... 2.suitable for UPS and solar system 3.Maintenance free 4.wide applications The Solar battery is widely applied for ... new energy, telecommunication, banking, medical industry, fire fighting, public safety system and ... -500 2V 500Ah 241mmx172mmx331mmx366mm31kg Up to 7years FreeCharacteristic of solar battery:1. Excellent safety performance: No electrolyte leakage, ...