Deca Battery Charger Portable 12/24V Class 20A Evolution. Battery charger 12 Amp 12/24 Volt. Portable traditional battery charger 12/24 Volt for charging Pb wet batteries lead-acid batteries. Short circuit protection on the terminals. Input cable 2.2 m with “Schuko” plug. Power supply (Volt AC 50-60Hz): 1 Ph x 230. Rated battery voltage: 12/24 Volt. Average charging current:12 Amp. Effective charging current: 20 Amp. Charging functions: 2. Battery capacity (Ah min/max): 10 / 240 Ah.