Pure sine-wave inverter: No product we analyzed using this type of function could match the output, run periods, and surge-safety abilities of our picks, but it might be helpful in uncommon situations, and we frequently want it—specifically in types lacking AVR. All sine-wave inverters change DC energy into AC electricity, https://jaidenqrsrr.blogzet.com/the-2-minute-rule-for-ups-battery-lithium-51083771