[Poll]Which 18650 battery would you trust more?

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[Poll]Which 18650 battery would you trust more?
Random Unknown Cell
38% (6 votes)
Very Old Laptop Pulls(Stored for 5+ years but cells are older)
63% (10 votes)
Total votes: 16
Edited by: mitsuki08 on 08/09/2021 - 07:41
Last seen: 7 hours 19 min ago
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Just curious what the consensus is on BLF

zoulas's picture
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Very foolish to use either one. Are people doing it? Yes, Is it smart ? No.

New, name brand batteries are $5 from reputable sources.

mattlward's picture
Last seen: 1 hour 31 min ago
Joined: 06/19/2015 - 09:20
Posts: 3119
Location: Illinois, USA

I have been down this route, not worth the effort! The pulled cells were used for a specific purpose, they are usually not high drain and/or high capacity. You also have to address roughness from the tab removal or you will booger up springs. The exception may be 18650 or 21700 cells pulled from EV packs… if you can find them.

EDC rotation:
FW1A, LH351D 4000k (second favorite)
FW3A, LH351D 3500k
FW3A, SST20 FD2 4000k
FW3A, Nichia 4000k sw40 r9080 (favorite light!)
FW3A, Cree XP-L Hi 5A3
Emisar D4V2, SST20 4000k
S2+, XM-L2 T6 4C

Last seen: 12 min 33 sec ago
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Location: Swampland,La

For Flashlights neither —— In my situation neither —— Now if you had a choice of Tool Battery Packs with better cells that were older I’d give it a shot

Yokiamy's picture
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Location: Netherlands

I do use old laptop pulls for my LT1, but all my other lights have reputable cells.

Like Zoulas said, just pay a few $ for a good cell.

flightless22's picture
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Location: California

It’s situational. Neither would be used for high powered applications. First important priority is to check them for faults, voltage too low, high internal resistance etc before hand. After that they would be recycled or promoted to low power use only. I would trust old laptop pulls more because they generally have some form of quality control but that doesn’t mean the old pull is in better shape than random cell from random cheap flashlight.

raccoon city
raccoon city's picture
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I would trust the laptop pulls more.  :THUMBS-UP:

Last seen: 1 hour 49 min ago
Joined: 11/02/2018 - 17:07
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Location: Vancouver, WA

For low power stuff, I do use laptop pulls, but i test them and recycle the ones that are questionable or junk. For higher powered stuff, just use new cells. I will say I’d trust something from Samsung, LG, or Sony or Sanyo than a no-name cell even if it’s from a pull.

dthrckt's picture
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Location: Upstate NY

I just threw out (recycled) a bag of over 40 laptop pulls and cheap 18650s and 21700s. I’m also determined to test the (branded and newer) cells I use more often. Risk of fire and pipe bomb is just not worth it.

I didn’t mind 10 years ago. YMMV

(didn’t vote, neither)

Last seen: 7 hours 19 min ago
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Thanks for the feedback everyone. It’s not that I don’t want to buy cells since they are affordable. I just opened my first laptop pulls for the experience since I had a broken laptop and got curious whilst opening the pack.

Lightbringer's picture
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Location: nyc

For low-stress lights, laptop pulls are fine.

09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0

kennybobby's picture
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Location: huntspatch, alabama

Trust Fires is a good brand; also Sure Fires, Fires Power, Sun Fires, etc. all are good crap if you can find them. LOL Big Smile Evil

Now i used to think that i was cool,
drivin' around on fossil fuel,
until i saw what i was doin',
was drivin' down the road to ruin. --JT

wle's picture
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Location: atlanta ga

i;ve never had a problem with any 18650 cell ever

i am cheap and keep using something that is working

though i did get so many 18650s that i discarded maybe 15 old laptop pulls, just because i had enough without them, and they were getting warm or not terminating during charging


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