1. Do not disassemble the product 2.The flashlight should charge with standard mobile phone charge any arbitrarily non-standard charger might effect battery using life even safety accident 3. Products charging time is about 5 hours. Once the charging is completed please remove the charging power to avoid unnecessary accidents 4. Keep it away from flammable materials while charging 5. This product is IPX4 waterproof can easily resist rain or water splashplease do not soak or immerse it into water