... , stable performance. 2. Intelligent charger, have pre-charger, bulk charge , flat charger, drop charger four sections of charging mode, ... reverse connect instruction function. Specifications:Lead acid Battery Charger ModelQA-6012QA-6020QA-6024QA-6028Input VoltageAC220V±10% 50HZOutput ... Remark:We are the largest manufacturer of battery charger with good quality and competitive price .Customer ...