Hi, this is puneet Sharma, an aircraft maintenance engineer by profession, hence not a ‘non-technical’ guy. If you wish to buy inverter or home, buy anything but do not buy Su-Kam SMF(sealed maintenance free) battery. My 02 Su-kam SMF batteries failed in 01 year time which company refused to replace since 15months warranty period was exceeded only by 03 days at the time of reporting. Tough it is understood that you learn problem associated with your inverter only when there is power cut. Even if you opt for Su-Kam SMF(sealed maintenance free) battery, my best wishes are with you. read full review »