The Norsk 2A 12.6V Lithium-ion Charger with Harness is compatible with 11.1V batteries, fast charging, and dependable. This 12V lithium battery charger is appropriate for basic lithium and Norsk 'green' batteries, like the 7.5Ah Lithium-ion Battery and the 15Ah Lithium-ion Battery, but it is not suitable for use with the Norsk 'orange' 20Ah and 32Ah batteries. For faster charging with the 2A 12.6V Lithium-ion Battery Charger w/Quick Connect Harness, it is recommended to leave the quick-connect harness for you to get back onto the ice faster.12 volt lithium battery chargerQuick-connect harnessCompatible with basic lithium and "green" Norsk batteries (7.5Ah Lithium-ion Battery, 15Ah Lithium-ion Battery)Not for use with the Norsk "orange" 20Ah and 32Ah batteries