secstate said:
My D cells from them are holding up fine (but not too many recharge cycles yet) and they are a LOT cheaper than the alternatives. I would consider getting those again. In fact the only batteries I would consider getting from them are the sizes that are not so widely available such as C and D. For stuff like AAA and AA and chargers for the same I would wait for a deal from a better known manufacturer. Also remember that most Tenergy batteries are over rated for capacity. My D cells were about 20 percent below spec after several cycles and the same is reported on the candlepower forums where folks take batteries and testing of the same very seriously.

Thanks for the info. I actually backed off an order from them a while back because of candlepower (or maybe it was a flashlight forum) but this deal was too good to pass up. I figure if I get 50% good batteries, I've still gotten 4 "free" batteries (the charger is worthless) per order of 24 over the current cost of eneloop. I don't need any more AAA's or adapters so the Costco deal wasn't worth it either. And I get rid of all my "fast discharge" NIMH's as well. It drives me nuts to pull a battery and have it be dead.

Now to wait for a deal on the C's and D's.

i bought 20 AA Tenergy batteries + charger from them. after charging, no dice. i bought a la crosse charger and refreshed them, still no dice. i tried 8 of the 20 and have basically written them off. ymmv.

funkmasterta said:Well, that reviewer didn't test the LSD performance of this generic brand. And that's the point of buying these, for its advertised LSD features. Thanks for the guys willing to be the guinea pigs. I'll wait for the next eneloop deal though. Can't stand having "fully charged" Energizer batteries showing only 50% capacity after two weeks of just sitting there discharging itself.
I have not tested these systematically, for example, charging up a set, letting them sit for a year, and then tracking the voltage periodically like every week. Indeed, as they were only released in the spring of this year, even if somebody started testing a set as soon as they were released, they'd have maybe only 7 months of data at a max. Whatever the case, I can tell you these are certainly not like regular NiMHs which self discharge quickly based on the 24 pieces I have been using since May. As I said, they seem to perform just like Rayovac Hybrids and Duracell Precharged (i.e. the Eneloop variety with white caps and made in Japan) at least for my usage patterns. It would be nice to see somebody do some systematic time lapse testing on these like I just mentioned, but depending on how long you'd want to see data for their low self discharge characteristics, it would be a long time before results are available.

The price is compelling but I'm going to take a pass on these, because:

1. As has been stated (especially by bjohns), the R2U Tenergy are already considerably inconsistent charge levels right out of the package! I've got about +30 Eneloops and recently got 24 Duracells (Precharged, LSD)...ALL of them were within .01v charge range of each other out of the package.

2. The 1 review at Am@zon for these seriously panned them: LINK. I give more weight to a review like that because it gives a real-world usage example. bjohns mentions using the BC900 charger to run through several refresh cycles to bring the capacity level back on 2 cells, but what charge/discharge mA settings did you use? Over at CandlePowerForums, Eneloops were tested best of the bunch with being able to maintain 1.2v output even at 10A discharge! Sounds like these Tenergy batts have a pretty low discharge rate threshhold if they can't even power a 2-cell flashlight for long (according to the Am@zon reviewer).

3. I've bought many of the regular Tenergy brand AA and AAA batteries in the past. Over time, the variance in charge levels after just a few days (even though the batteries were charged at the same time) are greatly inconsistent. That doesn't do much in building trust in the brand for me.

4. It's already fishy to see that Tenergy markets these batteries as 2300mAH capacity. Every other LSD seller out there markets them as either 2000mAH or 2100mAH and (again based on bjohns findings) it's clear these Tenergy are only 2000/2100mah as well...That's some heck of a rounding-up of numbers there.

Namuna said:The price is compelling but I'm going to take a pass on these, because:
Namuna, I made an inquiry about these R2U low self discharge batteries on CPF last night, and somebody pointed out two links with somewhat in-depth analyses of them (link below). My interpretation of those links is that these batteries are quite good, certainly on par with any other Chinese-made LSD NiMH, and not too far off of the golden "Eneloop" standard. Indeed, the difference (capacity-wise) with the Eneloops is so small that you would probably only notice it if you were specifically trying to measure it. The observations in these links square with my experience with these batteries (I have been using 24 pieces of AA format since May). In my opinion and experience, $20 for 24 of these is quite compelling, and I have no hesitation recommending them. Here is the posting on CPF that points out the two somewhat in-depth reviews.

http://www.candlepowerforums.com/vb/showpost.php?p=2711649&postcount=12

Whatatay said:Gee, just what I want, self discharging batteries. That way they can lose powwer even while not being used.shirley you can't be serious.

In for one.

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2 and half stars from reviews of their own site. I'd better pass this time.

Thanks, put in my order already!
bejos said:vcxzfdsa said:can I use the 12% coupon Battery12 if I'm checking out using PayPal?

Yes - after it directs you to log in to your paypal account and choose your funding method, you are then taken back to the All-Battery checkout process before you submit your order. You enter the coupon code here (or next screen) on the All-Battery site. Do not enter the code in the paypal coupon code box - does not work as it is not a paypal code.

By the way, mine shipped already (much earlier today). Very quick shipping with USPS tracking included.