Li-ion balancing charger
Now the market is full of chargers. Automatic and not, with the measurement of capacity and without it. Most chargers are universal and can charge elements of any chemistry. Lithium-ion and lithium-polymer are increasingly being used in different devices. Not so long ago I remodeled the screwdriver battery for 18650 lithium-ion cells. I charge it with a smart Turnigy charger. But this charger is not for everyone.One of the main component is the power supply of each channel.Their role is performed by the charger boards of the tablets, with a 5 volt output and a current of 1 ampere (or you can buy it on Ali Express - a 5 V 1 A switching power supply).Charge controllers are boards from China - a charge controller for a 18650 battery. For each channel, its own controller. I have a board without protection, but in this case it is not needed. You can use controller boards with connectors, I have two of them missing, removed for other projects. The price of these modules is cheap. If you are working on reworking devices on lithium-ion and lithium-polymer, then these controllers are irreplaceable.On the charge controller boards there are LEDs that indicate the charge and the end of the charge. They need vypayat. Instead they will be ordinary LEDs, of different colors.They will be attached to the windows where the router's LEDs blinked before.
Will be required for assemblyDecided to assemble a simple charger with a balance for lithium-ion. The charger has 3 identical independent channels. They can be charged from one element to three. If necessary, you can add any number of channels. I have three of them, that is, 3S or 11.1 volts. The case for the balancing charger is the case from the burned-out D-link router. If there is a possibility, take the case a little more, work very closely in it.
Making a balancing chargerCharge controller boards need to be soldered to the outputs of charge cards. It is possible and separately. I soldered to thick wires from the power cable, so the design is more rigid.
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