About use the battery and battery charger should pay attention to some detail .

If the simulated burning end becomes noticeably dim,you should use the attached battery charger to charge the battery .Pay attention to the pole indication on the charger and never reversely connect charger when you use it.

After the batter is chargerd for 3-4 hours,the indicator will turn from red to green,suggestiong the battery has been fully chargered. So,you can take out the battery and disconnect the charger from the power source .