Heres my short, yet hopefully helpful, review of BTY’s Enesuper 2250mAh AA and 900mAh AAA battery review!
I decided that its time to get myself some of the Chinese made Eneloop wanabe’s and after little research I found out that BTY, whos batteries are otherwise know to be utter crap, do have couple of decent batteries under their sleeve so I went ahead and ordered these AA and these AAA from Tmart, at the time of purchase it was amongst the cheapest, if not cheapest, e-tailer where these batteries were available and in stock.
After usual month of waiting I received all 8 batteries in my mailbox, they were very well packed and in good visual condition so thanks to Tmart for taking care in this regard, I wouldnt want to receive batteries in damaged state due to poor packaging:
First discharge didnt yield any spectacular results, both AA and AAA had voltages ranging from 1.24 to 1.27(AAA) and exactly 1.3 volts on all AA’s.
I tested initial discharge capacity on AA’s, these were the results - 214, 423, 344 and 252mAh’s at 300mA discharge rate, nothing spectacular, as you see, hence why I didnt bother to write down first-discharge mAh numbers of my AAA’s, I did take a look at their voltages after discharge and according to C9000 they were as follows: 1,07;1.08;1.09;1.11 volts for AAA.
As far as weight goes then all batteries are up to what you would expect from batteries of their rated capacities to weight:
AAA = 11.9 grams AA = 26.9-27.2 grams
Now, lets take a look at more accurate testing and, so to say, breaking in data that I gathered during my tests on C9000 while charging and discharging all batteries to detect their capacity as well attempt to simulate high-draw flashlight use and see how much juice will they give out into average flashlight before losing their brightness.
My data is not scientific, so take it for what you want, interpret it the way you want, I tried my best to reflect characteristics of said batteries as good as I could with MAHA C9000 and UNI-T UT33C :D!
BTY 2250mAh AA, capacities shown in mAh:
Discharge@500mA
I –1977
II –2088
III –1905
IV - 1989
Charge@200mA
I - 2008
II - 2085
III - 2085
IV - 2123
Discharge@500mA+100mA discharge when 500mA was doneX
I - 1933
II - 1950
III - 1897
IV - 1928
Charge@2000mA(=2Amp charge rate)
I - 1931
II - 2007
III - 2009
IV - 2015
Discharge@1000mA(=1Amp discharge)+followed by 100mA discharge when 1A was doneX
I - 1867
II - 1904
III - 1872
IV - 1866
Charge@500mA(final charge after which batteries were left fully charged to test their LSD capacities after some months)
I - 1925
II - 1983
III - 1968
IV - 2011
LSD data will follow in coming days, first one will be one month data taken from two batteries.
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Here are BTY 900mAh AAA results, capacities shown in mAh:
Discharge@200mA
I - 849
II - 849
III - 828
IV - 820
Charge@500mA
I - 939
II - 939
III - 933
IV - 841
Discharge@1C(~800mA discharge rate done by C9000)+100mA discharge when 1C discharge is done, to see how much juice can be squeezed out of them after they have been emptied by high drain currentX
I - 827
II - 829
III - 812
IV - 788
Charge@200mA
I - 956
II - 957
III - 949
IV - 949
LSD data will follow in coming days, first one will be one month data taken from two batteries.
*EDIT: Here are results after AA discharge@500mA and AAA discharge@200mA after exactly one month for AA and +1 day for AAA:
III AAA 744mAh
IIII AAA 722mAh
I AA 1758mAh
III AA 1753mAh
*
X note: During those +100mA discharge tests, no more than additional 20-50mAh(highly innacurate numbers here because of varying mAh’s extracted from each battery after +100mA discharge) resulted in total battery capacity test after additional 100mA discharge was done, as usual, lesser numbers go with AAA and bigger ones with AA. So, as you see, nothing much can be squeezed out of drained batteries.
Thanks for reading, any questions or something to add, feel free to ask :D!
PS. During my review I contacted our Tmart rep here at BLF, Louis, and complained regarding AA 2250mAh capacity being slightly overblown and not being realistic and that thus batteries seem to be slightly overpriced given this fact.
He promised that they will lower price on their batteries, while AAA’s cost only 5$, AA’s still cost around 10$ which is exactly 1$ more than Id like to pay for them at the moment(take into consideration that Im yet to find out their 1 month LSD data to see what its all about, so that might change) :D!
Here lets hope that Tmart will lower even more their price because we all here at BLF simply LOVE great prices, dont we :D!