... . Features1.With high frequency design and modified sine wave output, the modified sine wave inverter offers high efficiency. ... Regulation (Batt. Mode)+/- 0.1 HzOutput Waveform (Batt. Mode)Modified Sine WavePower factorP.F.0.6BatteryCharger Current8 Amp + / - ... products, we have CE, SONCAP, GOST, UL(pending) .modified sine wave inverter lntegrating research & development, production and marketing, ...