Compatible with: CD CP4215 Coming Data Co., Ltd 42V 1.5A 42VDC 1500mA 42 Volt Power Supply Battery Charger (Note: 36V is battery's voltage. NOT charger's voltage. Please Check For Compatibility With Your Unit. Thanks.) Note: Rechargeable batteries typically last 1 to 3 years. If a battery is old or depleted, it may not accept a charge, but this is not necessarily due to the charger. If you're unsure whether the battery or charger is faulty, use a voltmeter to check the charger's functionality. 42V AC/DC Charger Replacement For H-1 Pro H-1Pro Series Ace R450 H1-ACE4 H1-ACE4-BLK 36.5V 10.4Ah Li-ion Battery 450W 750W H1ACE4 H1ACE4BLK Electric 42VDC 42.0V Power Supply Cord