1.5v-aa-gp-super-alkaline-battery

The 1.5V AA GP Super Alkaline batteries are the mid-range model that offers high capacity for alkaline batteries from GP, so we were quite interested to see how these compare to other high-end alkaline batteries. These batteries are supposed to offer up to 7 years shelf life and the ones we’ve tested were marked for use up to 01-2019. GP offers also an Ultra lineup of Alkaline batteries that are supposed to offer even higher capacity than the Super lineup that we are testing here, so we should also check these models as well in the future. Bit for now let us see how the 1.5V AA GP Super Alkaline batteries can perform. GP’s website does not have a lot of useful information about the actual capacity that the Super Alkaline batteries should offer, so we are off to test to see what we can expect to get from them.


1.5v-aa-gp-super-alkaline-power-profile

Starting with the power profile test of the 1.5V AA GP Super Alkaline batteries we can see that they can handle pretty high loads before reaching the cutoff voltage of 1V that we are using for our tests. We’ve managed to reach up to 1.55A current draw before the batteries hit the cutoff voltage and values over 1 Amp are not that common to find with alkaline batteries, so these batteries from GP are handling pretty well actually up to this point. The open circuit voltage of the 1.5V AA GP Super Alkaline batteries we’ve tested with was 1.58V, though of course that value decreases when the battery is under load.


1.5v-aa-gp-super-alkaline-capacity

Moving on to the constant current draw tests we are performing and starting with a 0.1A load tests for the 1.5V AA GP Super Alkaline batteries we’ve managed to get 2231 mAh capacity which we consider to be quite good. Going for 0.2A constant current draw form the batteries the useful capacity you can expect is 1839 mAh and going even higher the useful capacity gets pretty much in half in our tests at 0.5A and 1.0A as compared to the previous rate. Nevertheless the 1.5V AA GP Super Alkaline batteries still manage to perform very well even under higher constant current draw rates, though as usual for such situations we would still recommend to go for rechargeable NiMH batteries instead as the better choice.

The performance of the 1.5V AA GP Super Alkaline Batteries in our tests:

– 2231 mAh at 0.1A load
– 1839 mAh at 0.2A load
– 991 mAh at 0.5A load
– 458 mAh at 1.0A load

– 2.765 Wh at 0.1A load
– 2.197 Wh at 0.2A load
– 1.122 Wh at 0.5A load
– 0.504 Wh at 1.0A load

1-5v-aa-3200-mah-mex-cell-nimh-battery

The 1.2V AA 3200 mAh Mex Cell NiMH batteries are a clear example of a Chinese manufacturer labeling rechargeable NiMH batteries with higher capacity then they actually are. These batteries are supposed to be 3200 mAh, however they are being sold at a price of NiMHs with half that capacity, so this is supposed to raise some suspicion. So when you see batteries with very high capacity that are suspiciously cheap and from a brand that you’ve never head of, then you should be careful. Anyway, lets us see what is the actual capacity of these batteries and what current they can handle.


1-5v-aa-3200-mah-mex-cell-nimh-capacity

The maximum capacity we’ve got from the 1.2V AA 3200 mAh Mex Cell NiMH batteries at the minimum constant discharge rate of 0.2A we are using for testing NiMH batteries was 1486 mAh or more than twice less capacity than the batteries are supposed to provide. The only good thing here is that the batteries are handling pretty well with a current load of up to 1A, but going for 2 amps current draw and the voltage quickly drops below the 1V cutoff that we are using.

The performance of the 1.2V AA 3200 mAh Mex Cell NiMH Batteries in our tests:

– 1486 mAh at 0.2A load
– 1416 mAh at 0.5A load
– 1237 mAh at 1.0A load
– 145 mAh at 2.0A load

– 1.847 Wh at 0.2A load
– 1.700 Wh at 0.5A load
– 1.418 Wh at 1.0A load
– 0.148 Wh at 2.0A load

Definitely not worth buying these batteries as they are not delivering the promised capacity, not even half of it, they are actually something close to 1500 mAh and even though they are cheap, you will most likely get a better quality 1500-1600 mAh batteries for the same price. Be careful with unknown brands promising very high capacity battery at way too attractive price!

3s-11-1v-180-mah-turnigy-nano-tech-25-40c-lipo-battery

The 3S 11.1V 180 mAh Turnigy Nano-Tech 25-40C LiPo batteries are one of the smallest 3-cell Lithium-Polymer batteries available used in small-scale radio controlled models such as mini and micro cars and planes. Not to mention that these Turnigy batteries are available at a quite attractive price at hobby King, so you can buy more just to have a few spares. Of course if they are able to handle the high discharge rates that they are rated at – 25C constant and 40C burst, they could be really great, however still need to check it along with the capacity they can provide.

Official Battery Specifications:

– Capacity: 180mAh
– Voltage: 3S1P / 3 Cell / 11.1V
– Discharge: 25C Constant / 40C Burst
– Weight: 19g (including wire, plug & case)
– Dimensions: 35x20x15mm
– Balance Plug: JST-XH
– Discharge Plug: JST


3s-11-1v-180-mah-turnigy-nano-tech-25-40c-lipo-battery-capacity

Time for the actual tests, starting with a 1C discharge rate (0.18A) for the 3S 11.1V 180 mAh Turnigy Nano-Tech 25-40C LiPo battery we’ve managed to get 173 mAh as a maximum capacity and that is a bit short from the 180 mAh rating, though quite close to what it should’ve been. Moving to higher discharge rates such as 5C interestingly enough the battery was able to supply 182 mAh and 179 mAh at 10C discharge rate, apparently due to the fact that the temperature of the LiPo cells increases and the internal resistance gets lower at the higher discharge rate unlike at 1C. The temperature of the battery remains in the safe zone 55 degrees Celsius at 15C and 20C discharge rates and at 25C it gets a bit too hot at 73 degrees Celsius (out of the safe zone of up to 60) while still providing 165 mAh.

The performance of the 3S 11.1V 180 mAh Turnigy Nano-Tech 25-40C LiPo Battery in our tests:

– 173 mAh at 0.18A load (1C)
– 182 mAh at 0.90A load (5C)
– 179 mAh at 1.80A load (10C)
– 171 mAh at 2.70A load (15C)
– 170 mAh at 3.60A load (20C)
– 165 mAh at 4.50A load (25C)

We would not recommend using this battery at more than 20C for constant discharge rate, though the 3S 11.1V 180 mAh Turnigy Nano-Tech 25-40C LiPo battery may work well at 25C if properly cooled for example in a RC plane. In overall good performance and results that pretty much match the specs of the battery, though with some things that you should have in mind. Getting the battery too hot can permanently damage it or cause it to start a fire!

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