Maintenance Free Sealed Lead Acid BatteryDeep Cycle Battery for Solar / Wind Power12V7Ah: L152*W65*H96*T.H.102MM12V12Ah: L151*W99*H95*T.H.101MM12V18Ah: L180*W75.5*H168MM12V24Ah:L165*W126*H175*T.H.183MM12V28Ah: L166*W175*H125*T.H.125MMUL CE approval, ISO9001, ISO14001 management1 years warranty