29.4V4.2A Lithium-ion charger for wheelchair Item No.: IN2904200   Features/ Functions Switch mode charger with universal input voltage For 7S Lithium-ion battery powered wheelchair Microcontroller based with pre-charging and wrong/bad battery identification One LED for charging status and one for mains on Automatic cut-off when battery attains full charge Backfeed protection(BFP) Protected against reverse polarity and short circuit  With a 12 hours built-in timer   Ingress Protection IPX2  EN/AS/NZS60335-2-29 and UL1310 Battery charger approved Comply with ISO7176-25 - Requirements for electrically  powered wheelchairs   Meet DOE regulations efficiency Level VI         General Specifications Input :100-240VAC, 50/60Hz Output voltage : 18 ～29.4VDC Output current : 4.2A +/-200mA  Inrush current : Limited 30A for a cold start No load standby power ≤0.5W Efficiency: 85% Min. Operating temperature: -10℃～+45.5℃ Storage temperature: -40℃～+75℃ Operating relative humidity: 5%～95% RH MTBF: 40000 hours full rated load operation at 25℃ Case dimension: 166X66X38.5mm Warranty: 3 year FL5, No.62, Liusha S. RD., Shijie,Dongguan, Guangdong 523303 China 广东省东莞市石碣镇刘沙南路62号5层 Tel：+86(0)769-81812289 Fax：+86(0)769-81812989 E-mail: william@intaia.com Website: Http://www.intaia.com