What is a charger for a screwdriver

Which battery is better to choose for a screwdriver and how to use the charger for a screwdriver? According to statistics, the popularity of cordless drill / drivers is growing, and this is understandable, because thanks to the batteries, these tools are highly mobile, able to work away from power sources, and safe when working, for example, in wet rooms.

Types of batteries. By type, the batteries used in power tools of such leading manufacturers as Bosch, Hitachi, Makita, Black Decker, Metabo and others are nickel-cadmium, nickel-metal hydride and lithium-ion.

Below we will consider the advantages and disadvantages of different types of batteries, as well as how to use the charger for a screwdriver in order to increase the battery life.

Which is the best battery to choose for a screwdriver? Let’s take a closer look at the popular battery options:
Nickel-cadmium batteries (Ni-Cd) are the most popular type of battery used in power tools. They are included with such drill drivers as Bosch GSR 12, Hitachi DS 12, etc. They are chosen because of the low price, the possibility of quick charge, maintaining high capacity in the most difficult conditions, for example, at temperatures up to 20 ° C. Their disadvantage is the "memory effect", which is expressed in the loss of undeveloped capacity when charging an uncharged battery.

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A more environmentally friendly option compared to nickel-cadmium batteries is nickel metal hydride (Ni-MH). They are included with the Hitachi DS 18 screwdriver. These batteries differ in partially eliminated "memory effect". Their energy density is 40% higher than Ni-Cd, and the capacity is greater. They cost more because of this. If we compare these two types of batteries in terms of self-discharge, then Ni-MH has it 1.5 times higher.

Lithium-ion batteries are the latest development of manufacturers and have more interesting advantages: the complete absence of a “memory effect" that allows using the charger to charge the battery at any time, regardless of the degree of its discharge, significantly less weight, high battery capacity, low self-discharge level (approximately 5% per month).

Battery capacity
A measure of capacity is an ampere clock. Simply put, a battery with a larger capacity has a longer operating time under the same conditions within a single charge. In addition, the capacity affects the power of the tool, since the larger it is, the higher the maximum current. As a rule, household models of power tools have a capacity of 1.5 Ah, while professional ones have about 2.5 Ah.

Battery voltage
Voltage is in a fairly wide range. from 2.4 V to 36 V. The most popular are batteries with a voltage of 9 V, 12 V, 14 V. The first two are usually equipped with cordless screwdrivers and electric screwdrivers, and the last with more powerful power tools, for example, drills. A charger for a cordless screwdriver. how to charge the battery and how many hours it is advisable to charge it.