Bad batteries for gyro
Here they are batteries for gyrometers. When choosing them, remember the main rule – "miser pays twice". Buy gyro batteries only from trusted companies.
Nickel jumper, is a separate issue, basically we have batteries where they were burned out. Chemical analysis of the composition of these jumpers showed the presence of only steel with light Nickel plating on the body. To talk about their ability to withstand currents up to 20 amps is not necessary, they burn up to 10 A, and then a short circuit, stop the gyroscope and injury. And it's all in the best case, and under the car you can get and hover in a pool to drown.
The battery balancing fee in 90 cases out of a hundred soldered Chinese students in the classroom. Not washed flux, snot, no radiators, and thermal paste. And this is the main part, on which depends the life of the battery.
More terrible version of it called a sham. In practice, this is exactly half of the battery, the second part is replaced by foam rubber or other material. The total nominal value of the voltage is given, but the capacity is twice lower than the declared one.
So, how we are deceived. The first thing you notice is the price and the label. For gyrometer cost about 15 thousand rubles in the event of a failure of the battery does not want to buy a battery more than 5 thousand rubles. It turns out one-third of the cost of hower. Therefore you look something in the range of 2,5-3,5 thousand and offers such abound, both in China on Aliexpress, and at local dealers. However, as we tried to find a decent battery options, and could not. In the result slip. The first type is a pure Chinese battery with the label from the strange characters and elements of the 18650 inside. The second type is the same, only the label talking about the use of Samsung batteries and other leading brands. The cost between them may vary up to 500 rubles. In fact, this is the cost of pasted labels.
We have to admit that the study of this issue has disappointed us. After analyzing more than a hundred batteries for gyrometers lower and middle price segments, we do not our no specimens worthy of attention. In practice, it turned out that the presence of branded 18650 batteries in gyroscope batteries is rather an exception than a commonplace.