Ultra Power UP11 AC240W/ DC600W 4 Channel AC/DC Smart Battery ChargerThe UP11 240W 600W AC DC Quad Port Multi Chemistry Smart Charger is a fantastic choice for hobby enthusiasts. The UP11 can charge up to 240 watts total on AC power (CH1+CH2+CH3+CH4=240W), and up to 600 watts total when using an external DC power source (sold separately). Power distribution can be biased between channels if needed for faster charge times of higher capacity or higher voltage packs. Each charge channel supplies up to a maximum of 12 Amps