I using microtek inverter and microtek battery from last 5 year they giving me best power scince last 5 year and not any mistake or problem till now only I maintaine wattery water in every year time to time show indicator on the battery.in inverter fast charging option and slow charging option is good when we need fast or slow charging.i use other brand before but they cosumtion more power and damage battery soon.for better result we should use same company battery and inverter.so I love microtek.and recomanded for u.