Any, even an expensive battery can prematurely fail. The most common reason for this is an incorrect charging process or a battery mismatch with the device used.
The cheapest batteries include lead acid. Their use is effective in devices with high power consumption, where the mass of the battery and its dimensions do not play a big role. For example, an uninterruptible power supply unit or a backup lighting system. It is not recommended to store the lead battery in a discharged state, due to the lack of a guarantee that it can be charged after a certain period of time.
H2 nickel cadmium batteries
When choosing the type of battery for a particular device, you should take into account the environmental impact during the operation of the device. Nickel-cadmium and nickel-metal hydride batteries practically do not differ in appearance, but in their properties they have their own nuances. The cadmium battery has low power consumption, but is able to work in abnormal conditions of heat or frost. It can not fail during short circuits and is widely used in portable devices.
It can also serve after 1000 charges or storage for a long period of time. Its main disadvantage is the effect of memorization. When the charge is incomplete, the battery, as it were, puts this state into memory, which leads to a reduction in capacity and fast charging. True, and it discharges very quickly. Therefore, it will be useful to carefully select a device for charging the battery.
Cheap chargers may not have the individual functions and characteristics that branded models of well-known suppliers have. Lack of overheat protection may cause a fire. Automatically turning off the current supply after the battery is fully charged, can seriously increase its service life. The function of fully discharging the battery before the start of the process of charging it is useful, especially for the cadmium type.
