AA Battery Shootout
Posted: Wed Jun 28, 2006 9:40 pm
OK guys and girls, welcome to the great AA battery shootout!! I am happy to make this an ongoing and evolving resource for members but I need your co-operation. I only need so many batteries and seeing as I have enough to run an electric car, I'm not really in a hurry to buy many more. If you can spare a few batteries for a few days that are not already tested, PM me and we can organise to test them. It will satisfy your curiousity and add to this database which will benefit all of us.
Cheers
John.
Please note that all tests were done using the Lacrosse charger that I reviewed here. My test methodology was to do a complete refresh cycle at gentle charge/discharge rates and then do at least 2 test cycles.
Battery Band: Prolink
Claimed mAh: 2500
Purchased From: Birdy and also available on Ebay
Number of cells tested: 8
Worst Cell/Best Cell Results: 2030mAh/2240mAh
Average: 2120mAh
% of claimed capacity: 85%
Verdict: Seven of the eight cells tested at above 2000mAh, however one was only good for about 1600mAh. I excluded that cell from the results as it is obviously defective, however it does indicate a quality control problem. Also, the fact that none of the tested cells went much above 2200mAh leads me to believe that the manufacturer is somewhat "loose" with the truth. Still, not a bad result for a "no name" brand.
Battery Brand: Energizer
Claimed mAh: 2500
Purchased From: Just about anywhere
Number of cells tested: 6
Worst Cell/Best Cell Results: 2470mAh/2610mAh
Average: 2527mAh
% of claimed capacity: 101%
Verdict: High capacity, tight grouping between best and worst but also the most expensive. The pick of the litter for maximum performance if cost is not an issue.
Battery Brand: No name cleanskins off Ebay
Claimed mAh: 2600 !!
Purchased From: Ebay
Number of cells tested: 4 (After testing the first four,I didn't bother with the rest)
Worst Cell/Best Cell Results: 594mAh/637mAh
Average: 597mAh
% of claimed capacity: 23%
Verdict: Well, like most things in life, you get what you pay for... I paid 99 cents for 12 x 2600mAh batteries (plus $15.97 postage for an average price of $1.33 each). I knew they were suss as soon as I opened the pack, they felt so light compared to other AA batteries. Either the Chinese have made a breakthrough in battery technology or these things were mostly filled with air!! Out came the scales and these things weighed in at 17.8 grams each compared to 29.5 grams for the Energizers. In short, they are a con and a ripoff.
Battery Brand: m-Energy
Claimed mAh: 2300
Purchased From: http://www.mittoni.com.au (NOTE: since my purchase the 2300's have been superceded by 2500's)
Number of cells tested: 8
Worst Cell/Best Cell Resuts: 1668mAh/2020mAh
Average: 1904mAh
% of claimed capacity: 76%
Verdict: My oldest batteries but still only lightly used, mostly in my SB-800 flash. I was disappointed in their scores as they have always lasted a session with the flash (not that I am a big flash user). Perhaps their internal chemistry better suits the discharge demands of a flash rather a constant discharge via a discharger.
Summary: Go with the big name brands. They know that they have to be reasonably honest with their figures as they will be under much more scrutiny than the lesser name and no name brands.
Please note that all batteries tested are no more than 12 months old and have been recharged less than 20 times prior to this test. Considering that most manufacturers claim a 1000 recharge cycle for their batteries, age and usage is not a factor in these results.
EDIT: New batteries added 5/7/06
Battery Brand: Grandcell
Claimed mAh: 2100
Purchased from: Coles Supermarket
Number of cells tested: 4
Worst Cell/Best Cell Results: 1690mAh/2200mAh
Average: 1992mAh
% of claimed capacity: 95%
Verdict: I was suprised, I expected these things to test poorly. If it wasn't for one poor cell, these things would have exceeded their claimed rating. If you see them on special, grab a pack or two.
Battery Brand: Lacrosse
Claimed mAh: 2000
Purchased from: Came with charger for free
Number of cells tested: 4
Worst Cell/Best Cell Results: 1640mAh/2030mAh
Average: 1908mAh
% of claimed capacity: 95%
Verdict: Once again, one poor cell dented the result, but seeing as they cost me nothing, I won't complain...
Cheers
John.
Please note that all tests were done using the Lacrosse charger that I reviewed here. My test methodology was to do a complete refresh cycle at gentle charge/discharge rates and then do at least 2 test cycles.
Battery Band: Prolink
Claimed mAh: 2500
Purchased From: Birdy and also available on Ebay
Number of cells tested: 8
Worst Cell/Best Cell Results: 2030mAh/2240mAh
Average: 2120mAh
% of claimed capacity: 85%
Verdict: Seven of the eight cells tested at above 2000mAh, however one was only good for about 1600mAh. I excluded that cell from the results as it is obviously defective, however it does indicate a quality control problem. Also, the fact that none of the tested cells went much above 2200mAh leads me to believe that the manufacturer is somewhat "loose" with the truth. Still, not a bad result for a "no name" brand.
Battery Brand: Energizer
Claimed mAh: 2500
Purchased From: Just about anywhere
Number of cells tested: 6
Worst Cell/Best Cell Results: 2470mAh/2610mAh
Average: 2527mAh
% of claimed capacity: 101%
Verdict: High capacity, tight grouping between best and worst but also the most expensive. The pick of the litter for maximum performance if cost is not an issue.
Battery Brand: No name cleanskins off Ebay
Claimed mAh: 2600 !!
Purchased From: Ebay
Number of cells tested: 4 (After testing the first four,I didn't bother with the rest)
Worst Cell/Best Cell Results: 594mAh/637mAh
Average: 597mAh
% of claimed capacity: 23%
Verdict: Well, like most things in life, you get what you pay for... I paid 99 cents for 12 x 2600mAh batteries (plus $15.97 postage for an average price of $1.33 each). I knew they were suss as soon as I opened the pack, they felt so light compared to other AA batteries. Either the Chinese have made a breakthrough in battery technology or these things were mostly filled with air!! Out came the scales and these things weighed in at 17.8 grams each compared to 29.5 grams for the Energizers. In short, they are a con and a ripoff.
Battery Brand: m-Energy
Claimed mAh: 2300
Purchased From: http://www.mittoni.com.au (NOTE: since my purchase the 2300's have been superceded by 2500's)
Number of cells tested: 8
Worst Cell/Best Cell Resuts: 1668mAh/2020mAh
Average: 1904mAh
% of claimed capacity: 76%
Verdict: My oldest batteries but still only lightly used, mostly in my SB-800 flash. I was disappointed in their scores as they have always lasted a session with the flash (not that I am a big flash user). Perhaps their internal chemistry better suits the discharge demands of a flash rather a constant discharge via a discharger.
Summary: Go with the big name brands. They know that they have to be reasonably honest with their figures as they will be under much more scrutiny than the lesser name and no name brands.
Please note that all batteries tested are no more than 12 months old and have been recharged less than 20 times prior to this test. Considering that most manufacturers claim a 1000 recharge cycle for their batteries, age and usage is not a factor in these results.
EDIT: New batteries added 5/7/06
Battery Brand: Grandcell
Claimed mAh: 2100
Purchased from: Coles Supermarket
Number of cells tested: 4
Worst Cell/Best Cell Results: 1690mAh/2200mAh
Average: 1992mAh
% of claimed capacity: 95%
Verdict: I was suprised, I expected these things to test poorly. If it wasn't for one poor cell, these things would have exceeded their claimed rating. If you see them on special, grab a pack or two.
Battery Brand: Lacrosse
Claimed mAh: 2000
Purchased from: Came with charger for free
Number of cells tested: 4
Worst Cell/Best Cell Results: 1640mAh/2030mAh
Average: 1908mAh
% of claimed capacity: 95%
Verdict: Once again, one poor cell dented the result, but seeing as they cost me nothing, I won't complain...