Fixing an egrip advice needed

[nikki from mars]

Hi there all...
Well this isnt a mod that I am making from scratch but.. thought this was probably the best place to ask the question...
I have a couple of joyetech egrips that have died... they had been in use for a while and just packed up. Have the kit I need to fix them but dont know what batteries would be best/safest for replacing the old batteries.
They use a standard size 14500 battery, but I dont know what 14500 battery I should use to replace the burnt out ones with. So need some reccomendations please...
I am also a bit wiggly about having to solder directly onto the battery... the OH is better at soldering than me so will probably get him to do that part... I have done some soldering many years ago but not onto a live cell... should the cell be mostly discharged or mostly charged before it is soldered and placed in the mod?
Any advice greatly appreciated before I go ahead and attempt the fix.
Cheers all
Nikki

 

[nikki from mars]

@Tubbyengineer any thoughts on this?

 

[Tubbyengineer]

You'd need to get cells with solder tabs to do this safely, it's not so much about the charge level as getting the wires soldered to the cell without getting it too hot. You cannot solder directly to the cell, you need to solder to tags or leads that have been spot welded to the cell during manufacture - anything else risks setting the cell into thermal runaway...
There are tabbed 14500 cells available but I'm not sure of their C Ratings - most are designed for lower power uses like shavers and cordless phones...
Something like this is what you are looking for, although theres no mention of it's C rating or Amp capacity, Try contacting them to find out what it is...http://batteriesplus.co.uk/acatalog...ery-3-7-V-800-mAh-with-solder-ta.html#SID=562

If it's a standard Egrip with the 1.5 coils and 20w rating then you need a cell that can supply a minimum of 5.3 amps...

 

[nikki from mars]

You'd need to get cells with solder tabs to do this safely, it's not so much about the charge level as getting the wires soldered to the cell without getting it too hot. You cannot solder directly to the cell, you need to solder to tags or leads that have been spot welded to the cell during manufacture - anything else risks setting the cell into thermal runaway...
There are tabbed 14500 cells available but I'm not sure of their C Ratings - most are designed for lower power uses like shavers and cordless phones...
Something like this is what you are looking for, although theres no mention of it's C rating or Amp capacity, Try contacting them to find out what it is...http://batteriesplus.co.uk/acatalog...ery-3-7-V-800-mAh-with-solder-ta.html#SID=562

If it's a standard Egrip with the 1.5 coils and 20w rating then you need a cell that can supply a minimum of 5.3 amps...

Thanks for the info.. had looked at a few youtube vids of the fix... they all seem to solder directly onto the batteries.. but wasnt sure about doing that... will look into your suggestions and see if its possible to source something that is suitable

 

[nikki from mars]

You'd need to get cells with solder tabs to do this safely, it's not so much about the charge level as getting the wires soldered to the cell without getting it too hot. You cannot solder directly to the cell, you need to solder to tags or leads that have been spot welded to the cell during manufacture - anything else risks setting the cell into thermal runaway...
There are tabbed 14500 cells available but I'm not sure of their C Ratings - most are designed for lower power uses like shavers and cordless phones...
Something like this is what you are looking for, although theres no mention of it's C rating or Amp capacity, Try contacting them to find out what it is...http://batteriesplus.co.uk/acatalog...ery-3-7-V-800-mAh-with-solder-ta.html#SID=562

If it's a standard Egrip with the 1.5 coils and 20w rating then you need a cell that can supply a minimum of 5.3 amps...

Have also had a quick look for small enough battery holders... so I could use some of the 14500 batteries I have that I know are supppsed to be hogh drain... trouble is the space is very limited.. would also probably look at upgrading to the best 14500 cells I can find if you have any suggestions...

 

[Tubbyengineer]

Have also had a quick look for small enough battery holders... so I could use some of the 14500 batteries I have that I know are supppsed to be hogh drain... trouble is the space is very limited.. would also probably look at upgrading to the best 14500 cells I can find if you have any suggestions...

Nope - sorry no other real reccomendations for this, there are very few available to retail, mostly they go straight to oem sources...

 

[domejunky]

I've seen videos of people soldering directly to batteries, but I wouldn't recommend it, and wouldn't do it myself.

I buy batteries from NKON as they will spot weld a nickel tag onto them for €0.40. I've done this with Samsung 25Rs to build parallel 18650 mods.

Are you sure it's the batteries that are dead?

 

[nikki from mars]

I've seen videos of people soldering directly to batteries, but I wouldn't recommend it, and wouldn't do it myself.

I buy batteries from NKON as they will spot weld a nickel tag onto them for €0.40. I've done this with Samsung 25Rs to build parallel 18650 mods.

Are you sure it's the batteries that are dead?

Linky please? Have been ggogling till my eyes spin.. and phoning round... all the 14500 batteries that have the solder tags are way way too low... not 100% it is the batteries... but it would seem to be the most likely.. also if it is any other components than that they are unfixable as cant get the parts.. but if is battery and can source the right type is a pretty easy fix... ao no harm no foul if it foesnt work anyway.. and will be gaining skills for doing my own mod build if I ever chose to do so as well...

 

[domejunky]

Sorry...


https://eu.nkon.nl/


Tags are an option as you add to your cart. Postage might be a killer for just a few cells, might me worth adding a few 25Rs or something...

 

[nikki from mars]

@Tubbyengineer does this one look ok if I get them to do the solder tabs for me? Out of stock of all their 14500 batteries at present... but could get on list for right ones possibly...