Protection PCB

[MikethePipe]

I received 4 new Trustfire 14500 900mAh 3.7V batteries today. Out of the 4, one would not charge. I did get a flicker on the charging light when i wriggled it around. I tested it with a meter and again i could get the needle to flicker if i kept moving the prong around on the - end of the battery. I removed a little of the blue plastic cover on the battery and i got a good reading. I then removed the PCB on the bottom and the battery now works OK. Also charges OK and it don't get warm. In-fact at the moment it's working as good as any other battery.

It's not worth the postage just to return one battery, so i thought it might come in handy for my fishing headlamp but at the moment it's working fine in my little box Mod.

Question is, do we really need these protected batteries. I have now been informed, that a lot of model aircraft enthusiast use these 3.7 Li-ion batteries and they remove the PCB to gain a longer use out of them.

What's your opinion.

 

[Rocketman]

If the protection circuit cuts off and there is a little juice left in the battery you are looking at a crash. An experienced RC pilot can make a quick emergency landing when a battery appears to be getting weak and performance is sluggish so removing the circuit board could avoid a crash. Flying an RC plane is 10% flying, 90% fixing

If an unprotected battery blows in your face then vaping will be 10% vaping and 90% healing. Your choice.

Five dollar battery, less than one pack of cigarettes.

Rocket

 

[Quick1]

If an unprotected battery blows in your face then vaping will be 10% vaping and 90% healing.

Ding! Ding! Ding! And if your charger isn't quite as smart as it should be you could have a really hot gooey mess that may or may not be cleaned up by the subsequent fire.

 

[crashtestjeep]

yeah, not worth the risk....the PCB isnt neccesarily NEEDED, but the fact that the charger AND the PCB gave you trouble is def a warning sign that the batt MAY be a flawed one...better safe than sorry, ya know?