Note: Rechargeable batteries typically last 1 to 3 years. If a battery is old or depleted, it may not charge, but this isn't necessarily the charger's fault. To determine if the charger is working, use a voltmeter. Compatible with: E-TEK Electronic Manufactory Ltd. ZD012S133075USD ETEK Class 2 Power Supply Note: Rechargeable batteries typically last 1 to 3 years. If a battery is old or depleted, it may not charge, but this isn't necessarily the charger's fault. To determine if the charger is working, use a voltmeter. 5V 2A AC/DC Charger Replacement For S ZEVZO ET03 ‎DJS70 Car Jump Starter 1000A / 2500A Jump Starter Battery Pack 5VDC 2000mA Power Supply Cable Cord (5V Adapter)