... :1 years warranty ,below the 12V38AH ,1 year warranty 3)inverter and controller : 2 years warranty The term of payment :T/T ... power system is composed of 4 parts, solar panel, battery, controller, inverter, The using life for each components are as below:1 ... ’s warranty 3) Battery <12V38AH:1 year’s warranty 3) Inverter and controller: our core technology, we offer 2 years warranty ,we ...