Kafuwell Tells You the Basics of Electric Tool Battery Packs

2024-11-28

Battery packs are very important for electric tools. Poor-quality battery packs not only affect the tool's range but also its power. Lithium-ion battery packs are usually marked with the battery's Ah and V, with the former being capacity and the latter being voltage. So you can see that the core of the battery pack is made up of cells, which are usually 18650 lithium batteries that are one size larger than regular batteries. The main parameters of the cells are two: one is capacity, such as 1500 milliamps (mAh); the other is discharge rate, which is commonly 2C to 10C.

The standard voltage of a lithium battery is 3.7V, and it can reach 4.2V when fully charged. Usually, five cells of this type are strung together in series to form a battery pack, so the 18V-21V lithium-ion drill on the market is calculated this way, and 18V-21V is actually the same specification. For regular manufacturers, the default battery used is the 18650 type cell, which has a discharge rate of 5C. If low-cost batteries are used, the cells may be non-power batteries with a discharge rate lower than 5C, and if the capacity is not high, the peak power will be greatly reduced, and the tool will lack power.

The battery pack of an electric tool not only affects the tool's range but also its power. Poor-quality battery packs have low overall power and may be limited by internal resistance, causing continuous discharge heating and overheating protection. This limits the rated power, and overcharging, overdischarging, and no protection for cycling will cause battery capacity to degrade, seriously shortening the battery's service life. Kafuwell's high-quality battery packs come with overcharge, overdischarge, overcurrent, and overtemperature protection. They are made of 10 cells of A-grade 5C manganese-based power cells, and the cells have UN38.3/MSDS/sea and air transportation reports. Kafuwell, your lifelong good helper!