It is obvious that rechargeable batteries are used to reduce pollution. Moreover, they are effective and the best choice to make.
The poor performance of rechargeable batteries in the past was often the weakness of these batteries. Today, currently about one in ten issues are put on the account of the battery, nine times out of ten are of the device that uses or charger.
If the technique becomes fragile: they do not accept deep discharge below 0.9 volts or overloading above 1.5 volt otherwise their life will be reduced. We need the devices using the proper manner and chargers are well adapted.
Devices that can use rechargeable batteries. In theory, of course, all devices that use micro batteries 1.5 volt or 9-volt rectangular batteries can be used instead of rechargeable batteries. But in practice, it is not necessary that the device can leave the battery discharging deeply, below 0.9 volts per cell.
Cases that equipment can affect the quality of the batteries:
– In general the “classic” battery devices are rarely designed to use rechargeable batteries, the main problem is that they may discharge the battery too deeply. Therefore, we do not necessarily reached full life of the battery (which is normally 500 charges and discharges!) Despite, all the results are quite correct in general.
– In flashlights that use incandescent bulbs, it’s even worse because if the electronics stop working below a certain voltage, there is no security with stop below a given voltage for the bulbs, unless manually turn off when the light fades a little.
– The devices, even electronic using more than two batteries are not properly handling the individual discharge batteries.
When there are more than two batteries in series, even if the device has a safety by stopping below a certain voltage, because the device measures the total voltage, it may be that some of the batteries are charged and some others are already below the threshold.
Situation that the charger may compromise the quality of the batteries:
We find in supermarkets very few suitable chargers. Yet a good charger is not necessarily expensive. The charger may compromise the quality of the batteries
If charging two batteries in series, indeed since both batteries are never perfectly identical, ultimately they will not be charged equally and the least charged battery runs more risk of deep discharge during use. The end of charge detection is also more difficult to load and therefore, less accurate.
It is essential to use a charger that separates each load cell. In general, it shows because there is a light above each cell. But sometimes it can mislead because there are two LEDs with different functions: loaded or unloaded.
This is also seen as the LED will light up as soon as you insert one battery in the charger. Some chargers (like Sony) have only one indicator but have a separate battery circuit. Conversely, there are unbranded chargers that have a battery indicator but only one load circuit, so the load is very basic, not recommended.
Rechargeable batteries for toys
For toys that use a lot of batteries in series, such as remote control cars in 12 volts, which operate with 8 1.5v batteries in series, we can replace them with 3 Li-ion battery 3.7V in series, or replace 6 1.5v batteries with 2 3.6v battery 3.7V lithium ion. A little calculation shows us that we have the same voltage as if we used Ni-Mh batteries of 1.2 volt. Indeed, 6 1.2V batteries provide 7.2 v; 2 3.7V batteries provide 7.4 volts and the car works perfectly because it is designed to operate with either 1.5 V batteries with either 1.2V batteries. Toys like many electrical appliances have much margin of operation.
If you want to use the same box of R6 we will be forced to use models of 14500 that have a capacity of 900mAH in the best case. As against the big advantage is that the batteries will not be damaged during discharge they will cut automatically, provided the use of x “protected” to prevent deep discharge. The free slots will be replaced by conductive cylinders for carrying current or bridged by a wire which will carry the current through the free spaces. At the level of lithium ion, rare to be authentic are Trusfire with a small flame, in this version of best 18650 battery is only of 2400 mAh.