In modern devices use different types of batteries, type is determined by the manufacturer on the basis of price and quality of the product. In most cases, for measuring and mobile devices is the NiMH batteries (Nickel-metal hydride).
Main characteristics NiMH battery.
The main advantage of this type of battery over the other - a good life at a low cost of production. The service life of the battery and the battery - is the number of charge-discharge cycles, which is from here 300 to 500. Compared to lithium analogs, it on 10-20% more.
EMF NiMH battery 1,3 Volta, Rated voltage - 1,2 AT. In this case, the theoretical energy consumption per kilogram - 300 W / h, specific 60-72 W / h. What's more, compared with NiCd. The charging process is quite simple and does not require any type of current.
NiMH batteries resistant to extreme temperatures and have lower (as compared to NiCd) "Memory" effect. Under this parameter to understand the loss of capacity at partial charge certain types of batteries. for example, you can remember the first mobile phones or modern Chinese ultra-cheap batteries, that after a few "nedozaryadok" loses much of its capacity.
NiMH battery is lighter utilized, that an important factor today, especially in our country, where there is no well-established facilities and services, sledyashtih for эkologiey.
Disadvantages of NiMH battery.
Naturally, that the chemical power storage types have their drawbacks. In NiMH batteries, they also have, Despite all its advantages. And the first stands a high degree of self-discharge. I.e, despite good capacity, battery will lose itself part of charge when not in use. At what first 24 hours after disconnection from the charging device, this will be about 20%, and the next is no longer so critical - 20% for a month. In this regard, a simple long without work reduces performance, that is, we are back to the "memory" batteries.
Another disadvantage is considered battery price, but only in comparison with NiCd. Therefore, these batteries are selected mainly manufacturers of expensive equipment, as laboratory multimeters and handheld oscilloscopes.
There are claims from users and to the charging duration, which exceeds the nickel analog. As heat from the element in this mode. That is when recharging detail substantially heated, flesh to 45 degrees. This temperature will not cause injury, but it gives some discomfort in the use. On the performance of fever does not affect.
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