That is a protection for making a battery pack, not a charger.
If you have an adjustable voltage and current power supply, you can charge them manually. First set the PSU to constant current mode and set the current limit to 1A (for example), and measure the voltage of a cell. As soon as it reaches 4,2V (and that is 4,200V and not higher) you stop charging. Then switch it to constant voltage mode, and set voltage to 4,2V. Now you have to measure the current. When current drops to about 10% (or 5%) of nominal 1A (so 100mA or 50mA), then you stop charging.
Or you can make a charger using Microchip charger IC.