You may want to consider the sister to the Nitecore i2/4 Pro made by Jetbeam called appropriately enough Jetbeam i2/4 Pro. My understanding is that Jetbeam and Nitecore developed the charger jointly. I found that the Jetbeam was a few $ cheaper and they also threw in a cord to charge in the car.
I bought 2 TF Flames in 2012 and they discharged to 751 and 763 last week. On the other-hand a TF Flame I bought last year discharged to 679. Still better than an AW I bought in 2012 that discharged to 568 
A Nitecore I bought last year measured out at 748 so the TF Flames don’t seem to be all that bad.
Hmmm, do not see this Jetbeam i2/4 Pro model anywhere online…??? Is the name actually i2/4 or am I looking for the i2 version 4 model? I do see references to i2 version 3
Well what does the i2/4 part mean above? Did that poster just mean the latest version of the i4?
I think he meant that there’s both a 2-slot (the “i2”) and a 4-slot (the “i4”) version of the charger.
Ahhh, OK. So I just need to look for either the Jetbeam i2 Pro or Jetbeam i4 Pro which will be the latest version, right?
If you are married or have children in the house I would be sure to keep them as far away from normal AA batteries as possible. I have them in a case that is marked "NOT AA BATTERIES DO NOT USE!!!"
The DLG 14500 are better than the TrustFire Flames albeit they are not protected cells. The 900mAh TrustFire Flames will give you about 750mAh, the DLG’s are comparable to the Sanyo in quality, but without the price tag !
As Bikenber said, follow the <a href=“”lithium-ion” cell construction fire risk”\ - Google Search>li-ion safety precautions, they’re easy to find.
You know how to look this stuff up.
The hazard is mostly slow, not obvious — growth of crystals that eventually break the membrane separating the chemicals. Then you get a fast reaction.
I’ve seen it only once — heard nothing, smelled nothing, opened my metal storage box one day, and found that a little tiny cell — an RCR2 li-ion — had vented, leaving a brown smear around the little vent holes at the plus end.
Who knew? Glad it was a tiny one.
And the advice will vary, but comes down to: — only put at risk what you can afford to lose.
Own a voltmeter and know how to use it.
Metal box for storage
Watch while charging; best to charge outside on concrete.
Know why a standard fire extinguisher won’t put it out.
It’s a low-probability, high-consequence risk.
And you won’t know because you don’t always get the same cell someone else got, despite what’s shown on the picture or on the wrapper.
Aside
— re the Jetbeam chargers, a question:
Description of the I2Pro charger shows
375mA × 4 / 750mA × 2
(same as the 4-slot I4Pro charger)
But the I2Pro is clearly a 2-slot charger.
What should the numbers be?
375mA x 2, and 750mA x1?
Or since the slots are independent, does it ever divide the charge at all?
I should have been more explicit but you’ve got it now.
I just looked at the seller I used on ebay and they’ve raised the price by $6 so I don’t know if they’re your best bet anymore.
Battery university says :
If the fire occurs in an airplane, FAA tells flight attendants not to use fire extinguishers but specify water or pop (soda). Water cools the adjacent material and prevents the fire from spreading. Many research laboratories and factories also use water to put out battery fires. Allow good ventilation while the battery burns itself out. Li-ion contains no lithium metal and does not react with water.
A random YouTube video advises not to pour water on the burning laptop (because of reaction with lithium). Don’t laptop batteries use 18650 Li-ions?
Damn you, conflicting information! So how does one try to put out or at least suppress a Li-ion fire the correct way?
I think you’re referring to this.
Here is some light reading if you have the time. This report is from July 2011 and I’ve not been able to find anything that’s newer.
Just picked up 4 of those. They look interesting, thanks!
I found a thread saying I definitely should not use a 14500 in my Romisen RC-G2 or it will quickly fry it. Any opinion on these 3 AA lights and their suitability to run a 14500 for a few minutes max at a time?
Here are my current 1AA lights:
Romisen RC-G2 III
Thrunite T10
UniqueFire AA-S1 OSRAM
The T10 will work with a 14500 but medium mode is wonky. The other two modes work fine with it. The T10S plays nice with a 14500 as well, and I’m guessing so will the T10T.
I thought the cell might be Sanyo cell core, not necessarily authentic Sanyo battery
the two slots are independent, so it is .75a on each channel.
see: http://lygte-info.dk/review/Review%20Charger%20SysMax%20i2%20UK.html