The 1.2V AAA 1000 mAh BTY NiMH batteries are something that you may find in a lot of Chinese online stores as well as on eBay and what you will notice for sure with these batteries is that they are being sold very cheap for 1000 mAh capacity. The fact that these rechargeable AAA batteries supposedly offer very high capacity of 1000 mAh (among the highest for AAA size NiMHs) and their very cheap price should raise an alarm that the capacity rating is most likely lower than advertised. Normally in such cases it is a wise idea to avoid getting such batteries, but we got a pack of four in order to be able to test them and see what is the actual capacity that these batteries are providing and how much it differs from the advertised 1000 mAh. We were prepared for nothing more than half the advertised capacity, but going through a Break-In mode on the MAHA C9000 Charger/Analyzer we were not prepared for such a disappointment. On the photo above you can see the minimum and maximum measured capacity of the pack of four batteries and you will get why we were so disappointed. In fact what we got as available capacity was as follows: 134 mAh, 140 mAh, 144 mAh and 161 mAh and that is from batteries that are being advertised as being able to provide 1000 mAh capacity, not worth buying these regardless of the price, hell they are not worth even if somebody gives them to you for free.

Avoid buying 1.2V AAA 1000 mAh BTY NiMH batteries, they are really not worth it!!!


The 1S 3.7V 160 mAh Turnigy Nano-tech 25-40C LiPo batteries are designed for use with small scale RC helicopters as a replacement batteries for the originals upplied with the compatible radio controlled model. The Turnigy brand by Hobby King (one of the largest online RC model stores) so far got us with mixed results when testing different batteries, for example LiPos often turn out to be with overrated specs than what they really can provide, but with the Turnigy AA/AAA NiMHs for example we got very good results. So let us see what this Turnigy Nano-tech LiPo battery can provide in our tests…

Official Battery Specifications:

– Capacity: 160 mAh
– Voltage: 1S1P / 1 Cell / 3.7V
– Discharge: 25C Constant / 40C Burst
– Weight: 4.3g (including plug & case)
– Dimensions: 39x7x11mm
– Discharge Plug: 2 Prong Align Style (Fits Align Trex 100)


We have started the tests with a 1C discharge rate (0.16A) for the 1S 3.7V 160 mAh Turnigy Nano-tech 25-40C LiPo battery and we’ve managed to get 158 mAh as a maximum capacity, or almost what the battery is rated by the manufacturer. The 2 mAh shorter than the rating of 160 mAh should not be much of a problem if the battery manages to meet its other specifications, especially considering the very good price. Up to about 15C discharge rate or 2.4A constant current load the battery seems to handle very well, then a bit of a hiccup at 20C, but still managing to provide decent capacity. And at 25C discharge rate – 4.0A constant current load the battery is no longer able to provide stable power for more than a moment before it reaches the cutoff voltage. So again we are a bit short from the manufacturer rating of the battery claiming 25C constant discharge as we can clearly see that the real rating should be more like 20C constant and 25C burst discharge instead of 25-40C.

The performance of the 1S 3.7V 160 mAh Turnigy Nano-tech 25-40C LiPo Battery in our tests:

– 158 mAh at 0.16A load (1.0C)
– 142 mAh at 0.8A load (5.0C)
– 138 mAh at 1.6A load (10.0C)
– 130 mAh at 2.4A load (15.0C)
– 111 mAh at 3.2A load (20.0C)
– 9 mAh at 4.0A load (25.0C)


The 1S 3.7V 120 mAh Gens Ace 15C LiPo batteries with Nine Eagle type plug are used in various small remote controlled helicopters, especially in many of the Chinese brands and not only in Nine Eagle’s models. Gens Ace’s LiPo batteries have so far shown very good results in our tests, so we have high expectations for this battery as well as it could turn out to be a good upgrade option over the original LiPo batteries that may have inflated discharge ratings sold by the companies that make RC helicopters. As you can see this Gens Ace battery does not have a very high discharge rating at only 15C constant and 30C burst, but unlike many other Chinese LiPo batteries we’ve seen Gens Ace’s batteries to actually meet these specs in actual conditions.

Official Battery Specifications:

– Capacity: 120mAh
– Voltage: 3.7V
– Max Continuous Discharge: 15C (1.8A)
– Max Burst Discharge: 30C (3.6A)
– Weight: 3.9 g
– Dimensions: 48.16×12.16×5.08 mm
– Discharge Plug: NINE EAGLE Type
– Charge Rate: 1-3C Recommended, 5C Max


We have started the tests with a 1C discharge rate (0.12A) for the 1S 3.7V 120 mAh Gens Ace 15C LiPo battery and we’ve managed to get 130 mAh as a maximum capacity, a value that is a bit over the rated capacity of 120 mAh and that is definitely a good thing. Increasing the constant current discharge load at 5C, 10C and even 15C and the battery still manages to perform great, meeting the manufacturers specifications. In fact we suspect that even at 20C constant current discharge rate this battery will still manage to handle pretty well judging by the results we are getting from it. So great job with this battery as well for Gens Ace, a company that is continuing to build up a very good reputation for its battery products made for remote controlled models – planes, helicopters, cars, boats etc.

The performance of the 1S 3.7V 120 mAh Gens Ace 15C LiPo Battery in our tests:

– 130 mAh at 0.12A load (1.0C)
– 116 mAh at 0.6A load (5.0C)
– 115 mAh at 1.2A load (10.0C)
– 111 mAh at 1.8A load (15.0C)