How to calculate the battery charing time?

1.If the charging current less than 5% of the battery capacity
Charging time(h)=Capacity(mAh) * 1.6 / current(mA)

2.If the charging current more than 5% but less than 10% of the battery capacity
Charging time(h)=Capacity(mAh) * 1.5 / current(mA)

3.If the charging current more than 10% but less than 15% of the battery capacity
Charging time(h)=Capacity(mAh) * 1.3 / current(mA)

4.If the charging current more than 15% but less than 20% of the battery capacity
Charging time(h)=Capacity(mAh) * 1.2 / current(mA)

5. If the charging current more than 20% of the battery capacity
Charging time(h)=Capacity(mAh) * 1.1 / current(mA)

Battery charging caution:

1.Please make sure the battery clean, the black wire for negative and red wire for positive

2.Please install the battery correctly, do not get the battery close to fire, burnt, short circuited and discomposed, avoid direct sun and damped

3.Please do not mix use new and old batteries or different types

4.Please keep the original package before using