Specification: Type: Replacement for Craftsman 20V Battery Charger Input: AC 100V~240V 50/60Hz Output: DC 12V / 20V 2.0A Efficiency: 40W Advantages: 1. Intelligent protection system 2. Fast charger, 2.0Ah Lithium batteries full charged in 1 hours or less 3. Upgraded model: compatible with V12 V20 series lithium batteries. 4. LED indicator communicates battery charging status Compatible with Fit Craftsman 20V Max Lithium-Ion Battery Model: CMCB201 CMCB202 CMCB204 CMCB205 CMCB206 CMCB209, etc Replacement Craftsman 20V Lithium Battery Charger Model: CMCB100, CMCB101, CMCB102, CMCB104, CMCB124 Intelligent Protection System Overheat protection: stop charging when overheat. Overcharge protection: stop charging when charging too much. Short-circuit protection: No charger to a defective battery, Auto cut off when Short-circuit. Stop charging when charger faulty detected.