... 4. maintenace free Brand NameSAIPModel NumberSP-1292BNominal Voltage12VMaintenance TypeFree lithium polymer battery 1.used for solar system 2.high quality and reliability ... . maintenace free lithium polymer battery, maintenance free solar battery, solar charger,battery pack,vrla battery, solar battery, rechargeable battery, solar system battery, Sealed lead acid battery, battery for solar and ...