... .With high frequency design and modified sine wave output, the modified sine wave inverter offers high efficiency. 2 ... Regulation (Batt. Mode)+/- 0.1 HzOutput Waveform (Batt. Mode)Modified Sine WavePower factorP.F.0.6BatteryCharger Current8 Amp + / - 1Amp6 Amp ... we have CE, SONCAP, GOST, UL(pending) .modified sine wave inverter lntegrating research & development, production and marketing, Yiyuan ...