A protected battery has a small built-in electronic board which is designed to protect the battery in certain situations. For example, when a battery is starting to lag, it may be put on re-charge but still have 20% of its charge remaining.
Because the battery has an ‘intelligence’ because of its electronic board, it knows it has 20% charge and it won’t overcharge itself. Another benefit of a protected battery is that the electronic board can also cut off to prevent overheating which can happen if the user draws too long, too frequently.
Overheating a battery is bad for the battery and bad for atomizers, and will shorten their life. In the worst case a battery could explode inside the e-cigarette, but a protected battery reduces the risk of such issues.
The unprotected battery is the very opposite of the protected battery. It has no built-in electronic board and will deliver its power regardless.
That also means an unprotected battery on charge still with 20% of its charge remaining, doesn’t know it has 20% of its power left. If you leave it to overcharge itself this process will cause the battery to overheat.
When you put an unprotected battery on charge, it effectively assumes it’s drained, which results in overcharging if it’s not drained. A process of overcharging because it wasn’t drained (unless you take it off charge!) will shorten the life of the battery dramatically, and is a very serious explosion and fire hazard.
The big advantage of an unprotected battery is that it gives the user lots of options with their kit, see link to article below.
E-LIQUID / JUICE INFO
E-CIG TANK PROBLEMS
COILS / ATOMIZERS
E-CIG BATTERY HELP
SUB OHM BASICS