24V. An electric hand drill is a drilling tool powered by electricity. This is the most common and demanded type of power tool. Common specifications are 7.2V, 9.6V, 12V, 14.4V, 18V, 22.4V, 24V. 7.2V, 9.6V, 12V, 14.4V , 18V and other series, the maximum is 24V, 2500W. An electric hand drill is a drilling tool powered by AC power or DC battery. It is a type of hand-held power tool.
The higher the battery voltage, the greater its capacity, the greater its revolutions per minute and torque per meter, the longer it will take and the price will be the same.
Number 7, 2 is DN10DSA, battery 1.4AH, 600 rpm. The maximum torque is 8 Newtons.
Number 9, 6 is DS9DVF3, 1.4Ah battery, the speed is divided into two speeds, high speed, 840 rpm and low speed, 280 rpm. Maximum torque. 1-6 Newtons．
Number 12 is DS12DVF3,1.4 Ah battery, speed divided into two speeds, high speed, 1050 rpm, latent speed 350 rpm, maximum torque, 1-6 Newtons.
These are the most commonly used Hitachi cordless drill/drivers on the market.
However, cadmium battery products are gradually eliminated from the market, and lithium battery products will become the mainstream, because with the same capacity, lithium batteries are smaller, lighter and more practical, and lithium batteries are not as expensive. With memory, charge and use anytime. Unlike cadmium batteries, they must be exhausted before charging, otherwise the battery will be easily damaged, extending its life.