Well, the replies kind of answer your question. The board isn't a charger, it only protects the battery from over/under voltage and overcurrent at the voltages and current specified. If you want to charge a battery, you need a battery charger. It may already include the features of the protection board, or not.
If you need the charging specs for a battery, best research that bit first. The protection board is only working like a resettable fuse.
Whether it is applicable to "your" battery is another question. What are the specs for the battery?
Why don't you just buy a battery charger?
By itself, this device doesn't discharge the battery either. At least I can't see where/why it would.
It serves only to protect the battery from damage.