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Samsung 18650 INR18650-25R 2500mAh High Discharge FLAT Top
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KingJohn Offline
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Post: #21
RE: Samsung 18650 INR18650-25R 2500mAh High Discharge FLAT Top
Update

Finally bought some spare batteries, 2x GENUINE SAMSUNG INR 18650 25R GREEN 2500mAh 20/35A Li-Mn 3.7v BATTERIES £10.19 for 2 from ecoluxshop.. So lets see how they compare with my present Imren LG, that cost twice the price.

Now have to do it all again for some good protected ones for my torches (Cree Led)
(This post was last modified: 23-02-2016 01:01 AM by KingJohn.)
23-02-2016 12:58 AM
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Michael Offline
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Post: #22
RE: Samsung 18650 INR18650-25R 2500mAh High Discharge FLAT Top
I use LG HE2s in most of my flashlights. Mine are almost all Cree XM-L2 T6 LEDs. The HE2s are great. Usually I just use cells from my mech mods in my lights, except for any that take a pair. 
23-02-2016 02:40 AM
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KingJohn Offline
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Post: #23
RE: Samsung 18650 INR18650-25R 2500mAh High Discharge FLAT Top
I got 5000mah protected Ultrafire ha ha ha for my led light, but to be honest they are good, last a long time. I made up a sort of short and run wire, connected it and ran, it didnt even get warm. Stripped another one down to have a look at PCB and battery, well they were cheap but do take a few hours to charge. Also have some blue Ultrafire 3800mah ha ha ha more like  3.8Mah charge in 25 min max :0

So I need to have a clear out and get some good ones.

P.S tested a unprotected too, not a good thing to throw water over them when they are burning :0

Ill take a look at the LG HE2s
(This post was last modified: 23-02-2016 02:54 AM by KingJohn.)
23-02-2016 02:53 AM
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Michael Offline
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Post: #24
RE: Samsung 18650 INR18650-25R 2500mAh High Discharge FLAT Top
If you're not pulling high wattage with your lights, it might be a better idea to get lower amp, higher capacity cells. I just use the HE2s since it's what I have on hand, but most lights aren't going to need the high amp limit. A few of the other guys know more about flashlights than me, maybe Don or Spas or Johnny can give a better recommendation. 
23-02-2016 04:39 AM
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Skyray Offline
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Post: #25
RE: Samsung 18650 INR18650-25R 2500mAh High Discharge FLAT Top
I use the panasonic 3400mAh 18650s in my led torches which are good enough, ultrafires don't even make good paper weights Sarcastic_hand
23-02-2016 04:54 AM
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Michael (02-23-2016)
Spasmod Offline
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Post: #26
RE: Samsung 18650 INR18650-25R 2500mAh High Discharge FLAT Top
You'll be hard pushed to find any flashlight that comes close to overdriving a decent IMR cell (of course there are some exceptions with modded lights) but the thing to remember is that you will be drawing current (albeit lower than in sub-ohm vaping) for longer periods of time in a light.

Personally I'm not comfortable pulling more than 2C from my cells for prolonged use no matter how good the cell. This is simply because if they do vent inside a light, there's no outgassing available so you will have a big problem on your hands before you realise it's too late.

For ultimate safety, decent high mAh protected cells are always the preferred option. A good protected Panasonic cell is quite capable of giving you 2C and being safe while doing so.
23-02-2016 11:42 AM
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Skyray (02-24-2016)
Skyray Offline
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Post: #27
RE: Samsung 18650 INR18650-25R 2500mAh High Discharge FLAT Top
(23-02-2016 11:42 AM)Spasmod Wrote:  You'll be hard pushed to find any flashlight that comes close to overdriving a decent IMR cell (of course there are some exceptions with modded lights) but the thing to remember is that you will be drawing current (albeit lower than in sub-ohm vaping) for longer periods of time in a light.

Personally I'm not comfortable pulling more than 2C from my cells for prolonged use no matter how good the cell. This is simply because if they do vent inside a light, there's no outgassing available so you will have a big problem on your hands before you realise it's too late.

For ultimate safety, decent high mAh protected cells are always the preferred option. A good protected Panasonic cell is quite capable of giving you 2C and being safe while doing so.

I tend to use my torches no more than 10mins at a time, some do get quite hot but have huge heat sinks but some have built in protection as well i don't think i would like to leave some of them on any longer than this even with decent batteries lol the only one that i have used switched on for several hours at a time when fishing was the Oldam cap lamps but they are designed for long periods of use, but as you say its best getting good quality protected cells if you do, the ones i use are panasonic ncr18650b and effest 26650 3500mAh but there unprotected, i think you need protected ones more if you use more than a couple of cells don't you ? some of my bigger torches take 3 or 4 18650s or 26650s
24-02-2016 01:52 AM
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KingJohn Offline
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Post: #28
RE: Samsung 18650 INR18650-25R 2500mAh High Discharge FLAT Top
Most of mine are the Cree Q5 led, getting on a bit, but still working fine
24-02-2016 08:43 AM
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Skyray Offline
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Post: #29
RE: Samsung 18650 INR18650-25R 2500mAh High Discharge FLAT Top
I've got a mix of various cree i've around 80 flashlights in the collection now and lost count haha i seem to buy 20 odd every winter then lose interest in the summer lol
24-02-2016 10:39 PM
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KingJohn Offline
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Post: #30
RE: Samsung 18650 INR18650-25R 2500mAh High Discharge FLAT Top
So are there any torches with protected controllers? I know my leds shut down when they get too hot. I have torches, camping lanterns for power fail.. so would need to get a few batteries. One of the torches gets hot in 3 min, so I don't keep that on for more than 2 min, I have other torches that also take 16350 and 18650.

I went through a phase of randomly buying them, my son goes fishing a lot so bought lots that clip around your head, but all those had battery packs.
25-02-2016 12:06 AM
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