NEW MONSTER TRUCK 4X4 ROCK CRAWLER RECHARGEABLE R/C CAR Please charge for at least 8 hours for the first 2 times. Then it's enough to charge for 5-6 hours during normal use. Do not overcharge as it will not fill the battery with more power. Battery safety: 1)Adult's supervision is required for charging. 2)To charge the rechargeable battery pack in the car first remove it from the chasis. 3)Timely Remove exhausted batteries from the car and the transmitter. 4)Make sure the main switch is set to OFF before installing the battery pack into the car body. 5)Note polarity marks in the battery compartments when installing the batteries. 6)Do not try to charge non-rechargeable batteries. 7)Do not short-circuit the batteries. 8)If you plan to stop use for a long time remove the batteries from the transmitter and the car body to avoid leakage. 9)Never throw the batteries from different producers or ne and old batteries. 10)Do not mis batteries from different producers and old batteries. 11)Use only recommended batteries or equivalent ones. 12)Check the batteries on a regular basis to avoid leakage. 13)Keep this manual well for future reference as it contains important information about this product. Care & Maintenance 1)If you plan to stop use for a long time remember to remove all the batteries. 2)If necessary use a wet towel to gently wipe the car body clean. 3)Do not expose this toy to high temperature high humidly or direct sunlight. 4)Do not put this toy in water to avoid damaging this electrinic components.