Product Description

Key Specifications * High quality Ultra High Capacity AA Size rechargeable Nickel Metal Hydride (NiMH) battery * Exact replacement for standard AA size battery in all the devices * Provides ultra long use time per charge with this ultra high 2300 mAh capacity * Advanced NiMH technology means twice as long use life per charge than the ordinary rechargeables * combines all the features of the alkaline battery (Ready to Use) with the benefits of rechargeable battery * Very slow self discharge maintains 85% residual capacity after 1 year of storage and 70% residual capacity after 2 years of storage * Designed for enhanced performance for high drain applications such as digital cameras, CD players, portable audio devices, hand held games, 2way radios, PDAs, and other portable high drain digital electronics * Can be recharged for up to 1000 times, providing big saving by replacing hundreds of throw away AA batteries. * Convenient operation without memory effect. Can be charged anytime. * Can be rapidly charged with any quick charger, smart chargers, plug in charger or universal chargers * Three sets of 4 AA batteries * Dimension: 18mm(H)x50mm(D) * Weight per cell 0.06 lbs * Battery tested based on International Electronic Commission (IEC) standard to ensure capacity, quality and life time ##The batteries are only charged to 1/2 capacity due to the postal regulation for shipment safety. Please fully charge the batteries one time before using. ##

Product Details

• Brand: Tenergy
• Model: 90113

Features

• Provides ultra long use time per charge with this ultra high 2300 mAh capacity
• Advanced NiMH technology means twice as long use life per charge than the ordinary rechargeables
• Very slow self discharge maintains 85% residual capacity after 1 year of storage and 70% residual capacity after 2 years of storage
• Designed for high drain applications such as digital cameras, CD players, portable audio devices, hand held games, 2way radios, PDAs and others
• Can be recharged for up to 1000 times, providing big saving by replacing hundreds of throw away AA batteries.

Customer Reviews

Initial battery showed good results in tester.
I bought these Low Discharge NiMH batteries because they were cheap. I've read some other reviews and people said they worked well but Tenergy tends to overrate their batteries a bit but that doesn't seem to be the case here.

I used a La Crosse Technology BC-700 Alpha Power Battery Charger to test the batteries using the slow charge / discharge setting.

I first tested my Sanyo Eneloop AA battery which are rated at 2000mAH. It reported the batteries at 1950mAH which was good since I've been using these for a while. (I didn't have any new ones to test with.)

I then tested on the brand new Tenergy. My first task was to check how much charge still remained on the battery. Usually normal (non-LSD) NiMH batteries are close to dead when you get them new. These batteries had a bit over 1000mAH which is about half of it's rated capacity...so that was good that it had a charge. Of course I can't tell if this is correct since I don't know how long or the condition these have been sitting around. (Note that I did not break in the batteries either.)

On the charge test, it showed the capacity at 2370mAH which is very good since it's rated capacity is 2300mAH. (For comparision, people say Eneloops show a capacity of 2100mAH even though they are listed at 2000mAH.)

Now of course we need to check how well the Low Discharge part works. So normal (non-LSD) NiMH cells loose almost 20% to 40% of it's charge in a month. So I was going to do a drain test with the now fully charged Tenergy cell in a month from now and see how much capacity will be left.

Stay away from this brand RTU
Tenergy claims they are ready to use (RTU), but they arrived evenly spread anywhere from .9v and up to 1.15. Not a good sign for RTU, but I recharged them in my LaCrosse charger and dismissed it. Over the last 6 months, I've discovered 1/2 of the batteries exhibit self discharge about the rate of normal NiMH and the other 1/2 are much worse than that. Some discharge to .9v in less than a month. I've thrown the worst of the lot away. I had 24 AA and AAA Tenergy batteries that I bought from the [...] and none of the batch should be considered RTU. They weren't even worth the discounted price, nor are they as good as my regular NiMH which have a higher mah rating and cost less too.

If I bought these from Amazon, I would have returned them. But I didn't get them evaluated quick enough, and [...] never responded to my email (after their 30 day warranty). Save yourself a headache and get the eneloops - far better quality from what I read.

Good battery which meets expectations, comparable with Sanyo Eneloop
I run dozens of different electronic devices, and I need a solid rechargeable battery that will meet its stated power rating over a long life, and still not break the bank. I have been running Sanyo Eneloop cells, and own over 40 of them to date. I wanted to get some more and decided to try the Tenergy cells due to their lower cost. I tested them in a 4AA pack with a discharger and got just over 2350 MAH per cell. I think that the Tenergy cells are worth looking at as an alternative to some of the more expensive batteries on the market.