Battery Charger with 30/12V Voltage Transformer Small metallic casing with integral carrying handle, LED charge status display & thermal overloadprotection. Includes battery terminals. Technical data: 6/12 V switchable charge voltage, 2/4 ampere switchable charge current, lead-acid battery at least 20 Ah (can also be used as power source) for 12 V appliances up to 50 W. Tested to European standard EN 62355, TÜV/GS. ....(continued here)