Filed under: news by Jeff Servaas |
Just last week, Digital Photography Review forum member arcae86 completed a battery capacity test that took several months. The test measured the retained capacity of 8 different brands of AA low self discharge (LSD) AA batteries. The brands tested were Sanyo Eneloop, Duracell precharged, Hybrio, Powerex IMEDION. Battery capacity measurements were taken 1 hour after charging, and again after 1 week, 1 month, and 3 months. At all measurements periods saw the Powerex IMEDION AA battereis to have the highest capacity of all 8 brands tested.
Read all the details of the test here
For simplicity’s sake, I have taken the figures from the 4 commonly available brands available in Australia (Sanyo Eneloop, Duracell precharged, Hybrio, Powerex IMEDION) and graphed the results below:
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Filed under: news by Jeff Servaas |
Glen from the DSLRusers.com forum recently did an extensive test of AA battery performance in his Nikon SB-800 flash, mounted on his Nikon D300 DSLR. I believe this is the first time a series of rechargeable AA batteries have ever been tested to see the real world results in a flash, and I am sure a lot of photographers will find this controlled test of real world value when choosing your batteries.
For the test, Glen compared four sets of 4 AA rechargeable batteries to see how many flashes could be achieved from each. Results are as follows:
Powerex 2700mAh = 266 flashes
Energizer 2500mAh = 242 flashes
IMEDION 2100mAh = 218 flashes
eneloop 2000mAh = 204 flashes
If you donʼt use your batteries as soon as you charge them, then test results are different. Some batteries are better at HOLDiNG their charge than others. Here are the results of the same test, 3 weeks after the batteries are charged.
Powerex 2700mAh = 250 flashes
Imedion 2100mAh = 211 flashes
Energizer 2500mAh = 208 flashes
eneloop 2000mAh =191 flashes
The Powerex 2700mAh have a higher energy retention rate than the Energizer 2500mAh. The Energizers were found to have a high self discharge rate, so much so that after just 3 weeks, the 2100mAh IMEDION batteries provide more flashes than the higher capacity 2500mAh Energizers.
Glen has noted that he is happy to conduct the test with other batteries if you want to know how yours compare to the four types already tested.
For capacity results and testing procedure details, read the full review here.
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Filed under: news by Jeff Servaas |
 
The full range of Maha Powerex AA rechargeable batteries and battery chargers will be demonstrated at the PMA Imaging and Technology Show from May 30 to June 1 in Brisbane. If you live in Brisbane, or you are attending the expo, come by Stand 217 and say hello!
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Filed under: news by Jeff Servaas |
Many customers ask “How do the new IMEDION AA rechargeable batteries compare to the eneloop AA rechargeable batteries?
Both are a low discharge technology, so they retain up to 85% of their charge after 12 months. But the eneloops have been available for a while, whereas the IMEDIONs are new. Has Maha been able to develop a better performer?
It would seem so. Test results have demonstrated IMEDION AA batteries outperforming the eneloop AA batteries in capacity measurements and discharge tests. Anders over on the Candle Power Forum has done many tests on the IMEDION AA batteries. The results of one of the tests, a comparison to the eneloop batteries, is shown below.
Update: Anders has noted that the eneloop graph is not correct. To see a more comparable graph, see the eneloop tests by Silverfox.
Here in Australia, several people have done their own tests and published the results on the whirlpool forum. Results by “Horrorking” can be seen here and IMEDION and eneloop performance tests in a Nikon SB-800 camera flash can be seen here
While the IMEDION AA batteries demonstrate a capacity advantage over the eneloop batteries, the other benefit of the IMEDION batteries is that they include a free AA battery holder, whereas the eneloop batteries do not.
EDIT: Fixed typo’s and added link to eneloop test results - sorry for misspelling your name Anders!
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Filed under: news by Jeff Servaas |
Powerex IMEDION Batteries - “Ready When You Are”
City of Industry, CA – Oct 25, 2007 — Maha Energy, the maker of Powerex batteries and chargers, is pleased to introduce a new line of rechargeable batteries: IMEDION. Unlike traditional NiMH batteries, IMEDION can be stored for an extended period of time without substantial loss of power and are ready to use out-of-package. As the name suggests, the IMEDION batteries will be “ready immediately!”
A common problem that plagues rechargeable batteries is that they need to be recharged about once every three months even if they are not used. Maha tackled this issue by developing advanced electrode materials to reduce the rate of power loss during storage. As a result, the IMEDION batteries retain up to 85% of its charge even after one year of storage (at a room temperature of 20 deg C).
The IMEDION batteries differ from the competition in that they boast a longer lifetime as well as increased power retention under warmer environments. The IMEDION batteries can be recharged for hundreds of times and perform extraordinarily well at elevated temperatures. In addition, the IMEDIONs feature a low-impedance design and can deliver a high burst of current.
The IMEDION AA batteries and IMEDION AAA batteries are fully compatible with all Powerex chargers and are available in 2100mAh capacity for AA size and 800mAh for AAA.
EDIT: Stock will be available in Australia from October 31. Stock is available now.
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Filed under: news by Kel |
Maha Powerex are again leading the industry in high performance rechargeable batteries by offering a market leading 5 year warranty on their AA NiMH batteries, effective immediately. Offering such an extended warranty when some manufacturers only offer 3 months warranty on their AA batteries is a testament to the quality of the Japanese made AA battery cells.
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Filed under: news by Kel |
Looking for our motorbike gear? We have set up a separate website for these products. You will find the S3 Performance Equipment motorbike leathers, tie-downs, fenders and other products at S3performance.com.au
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Filed under: news by Kel |
Maha Announces a Battery Charger-Analyzer from the Future!
La Verne, California, USA – 7th November, 2006 — Maha Energy, the maker of Powerex batteries and chargers, is pleased to announce its most significant product in five years: MH-C9000 WizardOne Battery Charger & Analyzer. Suitable for the casual consumer users, enthusiast and professionals, WizardOne is capable of charging, conditioning, analyzing, cycling, forming and discharging one to four AA or AAA batteries, all while digitally displaying the battery capacity and voltage. All four slots can be operated independently in different modes and settings. A total of five modes are available.
Those seeing the unit for the first time will be struck by its large LCD screen, backlit by ultra-bright white LEDs. Measuring over 3.5” by 1.5”, the display is more than three times larger than its closest competition and shows a wealth of information that is easy to read.
In addition to the standard charging, conditioning and discharging, the WizardOne charger-analyzer also offers two unusual operations modes. The “Break-In” mode allows the user to input the capacity of the battery and performs a “forming” charge designed to properly break-in new batteries. The “Cycle” mode allows user to charge and discharge batteries consecutively while storing the capacity for up to 15 cycles. There are ten selectable charging and discharging current from 0.2A to 2.0A and 0.1A to 1.0A respectively. The charger also features four independent temperature sensors using Maha’s latest temperature rise detection algorithm in addition to the usual peak temperature detection. It also armed with additional patented termination algorithms found in other Maha chargers.
The unit can be operated in a “basic” and “advanced” mode. In the basic mode, user merely needs to insert the batteries with no further key press. The charger will select the appropriate settings automatically, making it suitable for the casual users.
The WizardOne is also incredibly accurate. Using a quartz oscillator time base typically found in computer boards, it is able to report capacity within 1% accuracy across multiple units making battery bench marking more meaningful.
MH-C9000 is expected to be available in Australia from January 2007 with a price of $99.95. The standard package will include a worldwide travel power supply. A 12V car adapter will be available as an option.
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Filed under: news by Kel |
 Nikon has announced the latest addition to their DSLR range with the D80. With a 10.2 Megapixel sensor and a great kit lens, this looks like it will become a popular choice among digital camera enthusiasts.
An option to extend the battery life of the Nikon D80 is the MB-D80 Battery Pack/Vertical grip as shown in the photos. This will hold two of the Nikon EN-EL3e batteries, or six AA batteries.
The EN-EL3e is the same battery as used in the D200. Note that the EN-EL3 (as used in the D70) cannot be used in the Nikon D80 or D200.
 The En-EL3e battery provides 1500 mAh at 7.4 V (11.1 Wh), so a pair would provide 3000mAh at 7.4V.
Maha PowerEx AA batteries are compatible with the Nikon MB-D80. Six of our 2700mAh AA batteries would provide 2700mAH at 7.2V, and thus provide a nearly the same amount of battery power, but cost substantially less than one EN-EL3e battery.
It is reported that a single D80 battery will provide 2,700 shots, so the battery pack with 6x 2700mAh AA batteries should provide the camera with enough power to take around 4,860 photos off a single set of batteries, whether they are EN-EL3e or rechargeable AA’s.
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