building in charging

[ffwd]

i was curious if it would be safe to use a standard 510 charger to add charging into a mod using a 14500 battery. ive disassembled the charger and it would really be simple, but will it be powerful enough, and will it be safe
thanks
J

 

[jhonutz]

yes you can. Use 14500 protected batt`s anyway.

 

[CraigHB]

A "standard" 510 charger would be the one that plugs into the wall. You certainly would not want to use one of those. Don't you mean a USB 510 charger? Those work, but they don't shut down when charging is complete like a proper Li-Ion charger. The e-cig handles that normally. It's fine if you don't leave it unattended for extended periods. Just unplug after the light turns green. I would use a proper USB charging module myself. You can get them various sources, SparkFun, Adafruit, eBay.

 

[ffwd]

doesnt the protection circuit on a battery handle that?

 

[CraigHB]

The protection built into a Li-ion battery does three things, over-current (loading), over-voltage (charging), and over-discharge. That's it. Protection does not shield the cell from any possible non-optimal condition that can increase wear, only things that can cause catastrophic failure.

You can apply voltage to a protected Li-Ion forever and as long as it doesn't go over maximum allowable voltage, the protection will not do anything. It's bad for Li-Ions (puts wear on them) to be leave terminal charging voltage applied after charge current falls below a level that indicates charging is complete. A good charger handles that properly.

510 e-cigs don't simply have protection in them. There is protection for the cell in them, but it's built into the circuitry that manages operation. One of the things the e-cig does is enable and disable charging. Otherwise you wouldn't be able to vape and charge through the same connector.

 

[ffwd]

ok so basically stop being a cheapo and just buy a proper USB charging circuit for it, k thanks xD

 

[chatter97]

Charging boards are not that expensive. I just got this one for like 12 bucks. Its a little bigger than a quarter and compared to a green 2596 buck board it is about 1 1/2 boards wide and square.

 

[ffwd]

yeah i ordered a couple off ebay for this thing, they wont be here for a while though so i pulled the rest of the circuitry out of a 510 battery and will be using that temporarily till i get them in. i wouldnt have bothered but my effin li-ion wall charger is broken so my current mod would have to wait the month for these things to come from china otherwise.

 

[chatter97]

Mine came in yesterday, with the sugru I ordered!!!