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Information - 18650 - Know what you're buying



mstarmatt

Northern Monkey
28DL Full Member
#1
Having bought quite a few 18650 Li-Ion batteries in the past only to find out the mAh printed on the side is utter tosh I've finally found a resource showing what you actually get compared to what they are advertised as, so as more of you are trying the CREE/18650 torches thought I'd share the link so you don't get ripped off.

Battery test-review 18650 comparator

The 'TrustFire TF18650 3000mAh (Flame)' that DHL swore by appear to be favourable for price and power :thumb
 

Ojay

Admin
Staff member
Admin
#2
Thats right,, stay away from the Ultrafire ones (3000mAh) usually supplied with torch, they are pretty shite, run rate and voltage stop is gash!

Personally I've always found the Trustfire 2500mAh to be decent as well, the flame ones that Muttley refers to are a very good, but like DHL always said it's down to batch really, in my experience many of the 2500's have been much better than the 2800's & the 3000's
 

cunningcorgi

28DL Regular User
Regular User
#3
Is this a recent survey do you know ?

I've seen a similar survey but it was done a few years ago (2010 I think). It had some pretty alarming photos of the red 3000mAh batteries that usually come with the torches - they basically took the wrapper off to see what was underneath and found old laptop batteries with the + and - terminals stuck on...
 

Ojay

Admin
Staff member
Admin
#4
some pretty alarming photos of the red 3000mAh batteries that usually come with the torches - they basically took the wrapper off to see what was underneath and found old laptop batteries with the + and - terminals stuck on...
Truth, be careful what you're buying, it's also worth pointing out that you also need to invest in a decent protected charger (one that cut's once charged), the ones supplied don't!!!!

If you leave these things un-attended then your asking for trouble without a decent 'protected' charger

DHL once showed me what happens when they blow, and believe me some bonfyah your home would make if one of these went off

Be safe kids :thumb
 

mstarmatt

Northern Monkey
28DL Full Member
#5
Is this a recent survey do you know ?
I've seen a similar survey but it was done a few years ago (2010 I think). It had some pretty alarming photos of the red 3000mAh batteries that usually come with the torches - they basically took the wrapper off to see what was underneath and found old laptop batteries with the + and - terminals stuck on...
From what I can tell it's a work in progress, I was looking for some 26650s and even the 5000mAh Trustfires are only actually 4000 so with the added size and weight don't make them worth getting :banghead

I'd heard that about quite a few Ultrafire batteries but not checked mine, saying that the majority of mine are ripped from laptop batteries anyway (generally when the laptop battery is knackered it's just one cell that's failed), they aren't protected but I just make sure they don't get too hot charging or in use.
 

Marsden1002

Love it!
28DL Full Member
#7
Wish I had seen this before buying my ultrafire from china :-(

Ill just have to be carefull and invest in a decent charger and battery
 

cunningcorgi

28DL Regular User
Regular User
#9
it's also worth pointing out that you also need to invest in a decent protected charger

If you leave these things un-attended then your asking for trouble without a decent 'protected' charger

DHL once showed me what happens when they blow, and believe me some bonfyah your home would make if one of these went off
I never felt happy with the plastic toys that masquerade as chargers that come with the torches. So much so, I never charged the batteries unless I was in the room the whole time just in case the charger decided to go to Def Con 4.

Ended up getting an Xtar protected charger. At least I can sleep a bit easier now !
 

Marsden1002

Love it!
28DL Full Member
#10
The batteries or torch ojay?

Someone posted a link to amazon for some batteries and charger ill have to have a look at that.

Thanks for the info and warning lads or ladies :-D
 

mstarmatt

Northern Monkey
28DL Full Member
#12
The Lithium-Ion batteries are actually what grounded the Boeing 787's recently.

As Ojay has said, these can be dangerous if you're not careful, I never leave charging batteries unattended, ever and check them regularly to make sure they don't get too hot... this is the reason why (watch from about 1:15 in)

[video=youtube;vsAymO7Y9lU]http://www.youtube.com/watch?v=vsAymO7Y9lU[/video]
 

Marsden1002

Love it!
28DL Full Member
#14
↑ what charger would you recommend? Theres literally 100s on ebay and amazon which include some from the first post?!

The only recommend ones I can see are pila bit those are a fortune just for the charger!