How to choose the charger for the screwdriver? This question is faced by everyone who needs to buy this equipment. But this is not so difficult, there are several rules, adhering to which, you can purchase a completely high-quality and reliable charger for a screwdriver.
Statistics
If you pay attention to statistics, the popularity of drill drivers increases mainly due to the ability to use them at a fairly far distance from the power source, as they are equipped with batteries, therefore, work can be carried out even in a humid room. Therefore, such drills differ from ordinary ones in their mobility. Leading manufacturers such as Makita, Metabo, Bosch, Black Decker, Hitachi use the following types of batteries in their power tools:
- Nickel metal hydride.
- Li-ion.
- Nickel cadmium.
Disadvantages and advantages
Nickel-cadmium devices are the most popular, well-known models - Bosch 12 and Hitachi DS. Such chargers for screwdrivers have a low price, charge relatively quickly and maintain high capacity in the most adverse conditions, even if the temperature is below twenty degrees below zero. The only drawback is the loss of unused capacity in a charged battery when recharging.
Application
A nickel metal hydride screwdriver charger is used in the DS 18 kit by Hitachi. It is more environmentally friendly than the previous version, and also slightly more expensive in price, but the capacity is much higher, the energy density is higher than that of nickel-cadmium, forty percent, the memory loss effect has been partially eliminated. Self-discharge of nickel-metal hydride devices is one and a half times higher.
Innovations in Charger Manufacturing
The latest development in the field of power tool manufacturers is a lithium-ion battery charger for a screwdriver battery. There is no memory loss in the device, so charging, regardless of discharge, can be done at any time, the battery capacity is high, only five percent self-discharge per month.
Battery capacities
Battery capacity is measured in ampere-hours. The larger the battery, the longer the device will work on a single charge under the same conditions. If the capacitance is greater and the maximum current is higher, then the power is stronger. The capacity of the models used in everyday life is one and a half ampere-hours, while in professional ones it is about two and a half.
Battery voltage
The charger for the screwdriver has a very wide voltage range - from 2.4 to 36 volts. The most popular and popular devices are 9, 12, 14 volts. The first two options are equipped with electric screwdrivers and cordless screwdrivers, and power tools with more power, for example, drills - the last.
With proper storage and use, the charger can last quite a long time.