UltraPower UP9 AC 100W / DC 200W Four Port Multi-Chemistry AC/DC Smart ChargerThe UP9 100W 200W AC DC Four Port Multi Chemistry Smart Charger is a fantastic choice for hobby enthusiasts with many batteries. The UP9 can charge up to 100 watts total on AC power (CH1+CH2+CH3+CH4=100W), and up to 200 watts total when using an external DC power source (sold separately). Each charge channel supplies up to a maximum of 5 Amps to charge your batteries quickly, and the integrated balance port allows you to charge modern battery