1. please always choose the smart charger according to the manufacturer's recommendation. When the battery is full, the so-called intelligent charger must have automatic cut-off function.

2. Never use Ni-MH/Ni-Cd battery charger in lithium ion/lithium polymer battery pack, otherwise it will lead to battery explosion.

3. be sure to pay attention to the rechargeable battery pack and put the battery in the fire container to avoid accidents.

4. understand the risks of using Ni MH batteries and lithium ion batteries as well as other batteries.