Why did the batteries explosion?
How to choose safe batteries?
First, since there are so many fakes in the market, and it is harder and harder for customers to identify them. The easies way is to choose some reliable supplier and vendors.
Second, it is easy to know the capacity of a battery, but testing the exact discharge rate is difficult unless you have very specialized equipment. But overrated is very common is lithium ion battery industry. So, try to know the batteries before you buy it.
Third, wrapper worn. The wrapper for most battery is easy to worn while using. And it is easy to cause cut-off. For SC30 batteries, we have focused on to solve this problem. All the battery wrappers are pure PVC. Is much tough, environment, and safe for using.
Fourth, mishandling. Please really the specification warning carefully before using them.