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Archive for the ‘Li-Po/Ion/Fe Batteries’ Category
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)
1S 3.7V 120 mAh Gens Ace 15C LiPo Battery Tests
26, Nov 2013
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)
2S 6.6V 700 mAh Zippy Flightmax LiFe Battery Tests
11, Oct 2013
The 2S 6.6V 700 mAh Zippy Flightmax LiFe batteries are intended for use as a receiver battery packs in remote control models using nitro engines, but they can also be used as a main battery in other remote control cars and other RC models. The Zippy brand is used by one of the largest Chinese online stores for radio controlled models and is considered to offer good quality at a good price, but as with other cheaper Chinese lithium-based rechargeable batteries we are expecting to get results a bit lower than advertised, but let us see if we might be pleasantly surprised this time…
Official Battery Specifications:
– Capacity: 700mAh
– Voltage: 2S1P / 2 Cell / 6.6V
– Discharge: 5C Constant / 10C Burst
– Weight: 41g (including wire, plug & case)
– Dimensions: 53mm x 30mm x 15mm
– Balance Plug: JST-XH
– Discharge Plug: Standa JR Servo plug
We have started the tests with a 1C discharge rate (0.7A) for the 2S 6.6V 700 mAh Zippy Flightmax LiFe battery and we’ve managed to get 653 mAh as a maximum capacity, a value that is a bit shorter than the official rating of the battery of 700 mAh. So the battery should’ve been labeled 650 mAh instead of 700 mAh as apparently it cannot provide 700 mAh at 1C discharge rate, but the interesting thing is that this battery can provide the same capacity with a discharge rate of up to 3C and going to the maximum rating of 5C as a constant discharge rate we are seeing a bit of a decrease in the useable capacity where we got 599 mAh. So the discharge rating is Ok, the capacity however is labeled with 50 mAh more than it should’ve been, in the end these batteries are handling pretty well, so if a 650 mAh LiFePo4 battery is what you need at a good price, then you might consider getting these Zippy Flightmax batteries.
The performance of the 2S 6.6V 700 mAh Zippy Flightmax LiFe Battery in our tests:
– 653 mAh at 0.7A load (1.0C)
– 653 mAh at 1.4A load (2.0C)
– 653 mAh at 2.1A load (3.0C)
– 599 mAh at 3.5A load (5.0C)
What you should have in mind here as well as with other small batteries that use thin cables passing higher current such as 10A (the burst load rating of this battery) or even higher as a constant load is not a good idea as they will get hot and may melt and short the battery, and that is definitely something you don’t want!