Does the electric wrench need to be recharged when the new battery is used up?
Yes, the new batteries, whether or not there are many, need a long time to charge, and later should not wait until the electricity is used, and when there is no charge
The principle is very simple: buy a new battery requires activation of chemical substances, and in the subsequent use also need battery power and good chemical reaction, complete electrical energy into chemical energy, and then by the conversion of chemical energy into mechanical energy, so that the use of electric vehicles will ensure long service life.
