The HE2 appears to have less voltage sag according to the testing done by HKJ. I have been thinking about trying to find some from a supplier that is in the US if I can find one. Up to this point the Efest batteries suggested in the first reply has been my workhorse.
I'd say that for most applications the HE2/HE4/Efest 35A are pretty much interchangeable. Seriously, the performance is that close. The 25R seems to lag slightly behind in most flashlights, although again, it's pretty dang close.
I wish that we could stop using the IMR designation, because it really doesn't make sense anymore. In the beginning it was basically used to denote the "high discharge" capable cells, but none of these cells we are talking about are a "pure" IMR chemistry anymore, and the fact that they're not doesn't really matter because what we really care about is the discharge characteristics.
What really matters is that the cell is capable of the continuous and burst discharge you are asking of it. As long as you keep it within that range you won't have to worry about the cell overheating itself.
Thanks for the info guys, ended up buying 3 35a Efest from mtnelectronics. I usually buy my batteries from Orbtronic but I’m trying to shift my purchases towards folks that “feed” the forum.
How do the Keeppower IMR 3200MAH batteries stack up against those recommended in this thread? Thats what I have been using but was wondering if there was something better out there.
For the money and slightest hit on performance I buy 25R whenever they are on sale. fantastic performance and relatively cheap, especially when buying them to feed several high output 4x18650 lights.
If you look at HKJ’s comparator ONLY the VTC5 equals the AWT 18650 IMR 2500mAh 35A.The AWT’s voltage sag is “LESS” than LG HE2/EFEST/K’power/Samsung 25R. Its run times are also as good or better!
I just bought a few of their newer version,AWT 18650 IMR 3000maH 35A for my M2Xvn. The output is still great and I notice about 5 more minutes of increased run time.
Besides Mt. Electronics and Illumns I now found another place that specializes in batteries and they are very reasonably priced.
EDIT: Actually the AWT has a slightly better Voltage curve/sag than the VTC5 until you get to 20a and 30A where the VTC5 is slightly better.Since the VTC5 does not seem to exist anymore,this AWT IMR 18650 3000mAH “APPEARS” to be the best one! The cell in the AWT is NOT disclosed,Maybe it is a Sony?!!
I have the EFEST IMR 2500mah 35A and the K’power[LG CELL] of that version. They both work well. Like others have said there is not much difference,but being “Type A” personality/Flashaholic,I want the best output and MOST run time I can get.
I did see that Efest has come out w/ a 2800mAh/35A IMR 18650. IMR Batteries.Com are “out of Stock” of those at the moment
They do quite well up through 10A, but you sacrifice higher current abilities for slightly higher capacity.
I use them in my builds, but mainly because I got a sweet deal and was able to use gearbest points to buy them.
I’d like someone more educated than myself to confirm this.
People on the other crap forum have tried both NCRB’s, PF’s and Efest 35A’s in a MODDED TK75, pretty sure JMPaul with his integrated sphere said the numbers were the same with all the batteries. (4 batteries powering 3 LED’s)
Happy to be corrected, but I always thought unless the amperage is being restricted by the cell, it’ll yield the same results. Most lights don’t come from the factory requiring high drains, but there are of course exceptions to this.
I’d find it myself, but you know…new GoT just came out to watch