Protected batteries in a mechanical mod question.

[Brizzol]

Hi I am using Trustfire 3000mah 18650 protected batteries I bought from ebay in a mechanical mod and read somewhere that it is unsafe to discharge batteries past a certain point, they have pcb circuit protection in them and would this stop them from being unsafe to use when low charged as I have no way to measure the voltage in them. Thanks in advance

 

[JUDGMENT AFFIRMED]

Hi I am using Trustfire 3000mah 18650 protected batteries I bought from ebay in a mechanical mod and read somewhere that it is unsafe to discharge batteries past a certain point, they have pcb circuit protection in them and would this stop them from being unsafe to use when low charged as I have no way to measure the voltage in them. Thanks in advance

Hi Brizzol,
I don't know if they would be "unsafe", but I think its a must to have a meter with these batteries. I just starting with 18650 batteries myself and just saw this.
Mechanical Mod Proper Usage Guide

 

[jSquared]

You can damage the cell if you consistently discharge the battery below the voltage specified on the manufacturer's data sheet. This varies from battery to battery, but, generally speaking, you should not discharge your batteries beyond 3.3V (resting).

With protected batteries, it's not an issue because they have over-discharge protection. The clue's in the name! BUT how are you going to know if the PCB's working if you can't test the voltage of your batteries? Get yourself a multimeter - vaping 101!

I don't want to rain on your parade, but the battery you're using has a pretty bad reputation on this forum. I'd recommend using an AW IMR. These batteries are not protected, but are "safe chemistry" - meaning that they are much less likely to explode in the event of a catastrophic failure.

JJ

 

[Jack Pappas]

I have been using 18650's for quite a while now in my flashlights, headlamps for my Bike, and for easy on the go recharging of phones and tablets.
The Trustfires and Ultrafires are an excellent product. IF, you don't get a knockoff, which is sadly easier then it is to get authentic ones.
Beware of Chinese vendors who buy shrink wraps for the Trustfire, etc, from the same supplier as the originals use and just stick them on cheap knockoffs.

 

[Brizzol]

Thanks for the replys, I think maybe I have purchased knockoffs then considering it was £4.75 on ebay for a pair I will message the ebay seller just to double check, better to be safe than sorry I guess. I will purchase a multimeter just to be sure not to over discharge thankyou.

I have been using 18650's for quite a while now in my flashlights, headlamps for my Bike, and for easy on the go recharging of phones and tablets.
The Trustfires and Ultrafires are an excellent product. IF, you don't get a knockoff, which is sadly easier then it is to get authentic ones.
Beware of Chinese vendors who buy shrink wraps for the Trustfire, etc, from the same supplier as the originals use and just stick them on cheap knockoffs.