18650 batteries

[red_slr]

I bought some 8800mah 18650s for a torch. In theory should give me hours of run time.

I am getting less than an hour. Not thermal cut or anything.

I thought it might be my charger so I bought one with a display. It only puts about 500-600ma into each battery before shutting off at 4.2v.

Whats going on anyone got any ideas?

[Mroad]

You've bought some non-branded 1000mAh cells, 2nd hand cells or 'fake' cells with a 8800mAh wrapper on it, pretty common.

If it looks too good to be true it generally is. Stick with big name brand/suppliers like Panasonic or Sanyo.

https://batterybro.com/blogs/18650-wholesale-batte...

[red_slr]

Dang. Yeah ulltrafire.

Any good suppliers in the UK who are not going to sell fakes?

[untakenname]

Torchy the battery boy does decent matched cells, on eBay or via website http://www.torchy.co.uk/

Discharge graphs http://www.torchythebatteryboy.com/p/imr-safe-chem...

[anonymous-user]

I use 18650 batteries in my vape mod (they are Samsung), so somewhere like vapeclub could be worth a look, they are my go to online supplier.

https://www.vapeclub.co.uk/search/?sSearchString=1...

Edited by anonymous-user on Monday 22 July 20:23

[HRL]

I’m currently using a pair of eFest 3500mAh 3.7v from Amazon.

No idea what they're like in a torch but they easily last me all day in my vape mod.

Don’t think 8800mAh is doable in a 18650, or if it is, I’ve never seen them.

[red_slr]

I think vape 18650s are slightly different - don't have the raised +ve terminal.

[anonymous-user]

Mine have flat terminals at each end.

[C&C]

untakenname said:

Torchy the battery boy does decent matched cells, on eBay or via website http://www.torchy.co.uk/

Discharge graphs http://www.torchythebatteryboy.com/p/imr-safe-chem...

+1

I've bought a few from him and never had an issue.

[twinturboz]

Bought some 18650‘S for the vape from Fogstar.co.uk. They chucked in a little torch as a freebie with the order too.

[eliot]

Buying 18650’s is bit of a minefield. I salvage them from laptop batteries so have the kit to charge and discharge measure them.
I wanted some decent Samsung ones for my BLF Q8 torch, so bought sone ‘genuine’ Samsung 30Q batteries from ebay and paid about £12 a pair, the were supposed to be 3000ma but tested out at around 2000ma
So I bought another set of slightly more expensive Samsung 30q’s at £14 a pair from Amazon and they did test out at 3000ma.
The first seller claimed his were genuine, but they were not identical to the second set of more expensive 18650’s I had bought and tested.

Oh ignore any battery that claims to be more than about 3000ma, especially ultrafire or variation of that name - they are total bs

[red_slr]

Thanks all I ordered some Panasonic ones from a vape company, hopefully they will be alright just over £5 each.

The ultrafire thing is probably one of the worst scams on ebay now I have actually looked at it.

[gregs656]

Really should be careful when buying 18650s, there is a lot of junk out there and you do not want them going wrong - particularly in a sealed tube like a torch or a vape.

It sounds like you are running a multi battery torch? If you are you need to be even more careful.

I would also invest in a reputable charger as, again, you really do not want these things going wrong.

[red_slr]

Yeah I get that now, I have been playing with lipos since the early days so know what they can do. A bit stupid of me to assume you could get 8 amps out of a package that size!