GSR 10,8-2-LI Professional rechargeable electric drill/generator battery
The biggest advantage of rechargeable electric tools is to get rid of the shackles and cumbersome power lines, and to use them more freely and conveniently. But there is also a drawback to using batteries as power sources. If the battery or charging speed is not enough, the advantages will be greatly reduced. This GSR rechargeable electric drill/screwdriver is equipped with two 10.8 volt/1.3 ampere-hour lithium batteries and a large charger with output of 10.8V and 3A.
1. The battery is completely used up. The charging voltage just put into the charger is about 11V, and the charging current is 3.061A, reaching 2.35C (C is the capacity of the battery). At this time, the charger is charged in constant current mode.
2. When charging for about 15 minutes, the voltage rises to about 12.1V, no longer rising, but it changes to constant voltage mode, and the charging current begins to decrease.
3. In 32 minutes or so, the voltage rises to about 12.2V and the charging current drops to about 320MA (1/4C). The charging indicator stops flickering and becomes evergreen, indicating that it is full.
1. Place the charged battery for 1 hour, and the no-load voltage is 12.19V. Push the start-stop switch to the end, the battery indicator is full, and the voltage drop is 11.81V.
2. When the drill runs at full speed for about 10 minutes, the battery indicator lamp changes to 2 grids and the voltage drop is 11.18V.
3. When the electric drill runs at full speed for about 20 minutes, the battery indicator lamp changes to one grid and the voltage drop is 10.64V.
4. When the electric drill runs at full speed for about 31 minutes, the voltage drop is 8.87V. The electric circuit of battery electronic protection technology (ECP technology) works, and the electric drill stops turning.