If it doesn't charge?:1. Check whether the toy car battery is normal 2. If it does not charge, you can contact customer service to resend a new one for testing. 3. If 2 chargers are not charging properly, the probability is that the toy car battery is faulty. PRODUCT FEATURES: -28.8V Kids Powered Charger is suitable for kids electric ride-on cars, compatible with electric strollers, ride-on toys, is the best choice for continuous and stable power supply. - With a charging protection system, it will automatically cut off the power when the battery is fully charged, will not overcharge the battery, and will not damage the battery. - Two-color LED indicator charging status, red light indicates charging, green light indicates full charge.Let you know the charging status intuitively. PRODUCT SPECIFICATIONS: -Type 2 power unit model, LKC-288050-E, Input 100-240VAC 50-60Hz 0.36A, Output 28.8VDC 500mA