Power Wheels 12-Volt Quick Charger This charger is intended for use only with a Fisher-Price Power Wheels branded 12-volt lead acid battery and vehicle.Before use, please watch the how-to video in the image section of this product detail page.Before use, please read the enclosed instruction booklet, which has important information. Please see the trouble-shooting flowchart in the image section of this page for help navigating through any issues.Identical to charger model #H7461 (Includes same charging features but with newer item packaging.) The Quick Charger promises to have the toy ready to ride in two hours, however, 6 to 8 hours is recommended for a full charge on the toy.Although we claim the battery will be ready with only 2 hours charge time, we still recommend the 6-8 hour charge time regularly. The charger will not over heat if left on for longer than the recommended time, and will not ruin the battery as it will automatically shut off.If the charger was left on too long the red light may blink even though the battery is fine. It is recommended that the battery be charged on the regular charger to verify there is no damage. If charge is interrupted, (i.e. power outage), it is recommended that you unplug it from the wall and the battery, and then restart as the LED may be confused.