Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers



Laser Pointer Store

Ultrafire 18650 fakes.

Joined
Mar 4, 2016
Messages
22
Likes
6
Points
0
Just testing the ultrafire 18650s I got with my Artic on ebay and they all say 4200mAh.
Am i right in thinking that Ultrafire do not make anything above 3000mAh?
Ive had a few that have given decent full power run times at 10 to 15 minutes. But a lot are just plain crap and give maybe 10 to 15 seconds.
I did pick up a sony cell from my local vape shop and that beast gave nearly 40 minutes run time.
 

Alien Laser

Well-known member
Joined
Oct 6, 2015
Messages
1,137
Likes
678
Points
113
More like 300mAh very bad batteries i was charging one it got so hot i throw it our of the window on the snow i was thinking it will explode so all i have now is Aw's and 2 other batteries using protection for the low power laser :rolleyes:
 
Joined
Mar 4, 2016
Messages
22
Likes
6
Points
0
Aye I'm never leaving these charging unattended. Even in my Good charger with all the fancy protection.
I think i'll narrow down the good ones chuck the rest and gradually replace them with better cells as money permits.
 

Alien Laser

Well-known member
Joined
Oct 6, 2015
Messages
1,137
Likes
678
Points
113
I thing it happen because i doped the batteries two and after 24h i toke the batterer back in the house for surgery so i toke it a part and i found one more batterie inside the batterie only smaller and it was touching the contacts strange battery in a battery, i never posted it in the forum was thinking many will not believe me hehe
 

RB astro

Super Moderator
Staff member
Joined
Apr 6, 2014
Messages
2,453
Likes
1,312
Points
113
Joined
May 14, 2013
Messages
3,798
Likes
505
Points
0
These two threads cover it pretty good: http://laserpointerforums.com/f67/fake-ultrafire-18650-s-72833.html and again http://laserpointerforums.com/f67/warning-see-if-you-will-ever-buy-ultrafire-after-seeing-87108.html someone tested some Ultrafire and they were less than 1/3rd the mAh printed on the battery, I think some are less than 1/4th. I would like someone to also cut open some of those blue ones with no brand name as they are the cheapest and the worst, I have some and they last a few minutes.

Alan
 
Joined
Nov 14, 2015
Messages
21
Likes
0
Points
0
I personally don't trust UltraFires since they don't have a direct site where you can reliably get real ones.

I stick to my two 3000 mah LG HG2.
 
Joined
Jul 23, 2008
Messages
1,120
Likes
74
Points
0
I bight a ultrafire grey 2..1 ah from battery junictriction usa shipper back in high school and it still holds up in my lasers that take one wouldn't buy any fire in the name anymore.

they'll give you a fire alright.
 

Pman

Well-known member
Joined
Nov 28, 2012
Messages
4,444
Likes
938
Points
113
Please be EXTREMELY careful when taking apart a lithium cell. VERY easy to short and if ANY drop of water hits that lithium good luck putting it out. If nothing else do it outside away from any flammable materials and wear safety glasses and gloves if you have them. I have first hand experience with how dangerous lithium can be.
 
Joined
Nov 14, 2015
Messages
21
Likes
0
Points
0
I don't trust any brand with the word "fire" in it these days.
LG HG2's are the one of the, if not best batteries there is.
 
Joined
Jul 23, 2008
Messages
1,120
Likes
74
Points
0
Please be EXTREMELY careful when taking apart a lithium cell. VERY easy to short and if ANY drop of water hits that lithium good luck putting it out. If nothing else do it outside away from any flammable materials and wear safety glasses and gloves if you have them. I have first hand experience with how dangerous lithium can be.
they get warm with air and react with o2. I know1.5v primaries do from what i read since ppl use them to make meth and i read a guiude and it said that.


do it someplace outside with sand. Personlly i wouldn't do it.
 




Top