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: FAQ by Kel |
This is a question we get asked regularly, so here’s an explanation: Maha batteries will charge in any NiMH battery charger. Thats the short answer.
Now here’s the longer answer: Not all chargers are created equal 
My first battery charger was an Energizer. The above image shows part of the back label. This is a timer charger. Timer chargers simply provide charge to the batteries for a certain amount of time, in this case: 15 hours. They provides the same amount charge to all batteries, irrespective of capacity. Thus their suggestion to remove (lower capacity) NiCD batteries after 5-6 hours. This type of charger will overfill lower capacity batteries, and probably not fill a 2700mAh AA battery, resulting in less performance on both counts. This is affectionately called a “dumb” charger.
You will always get better results in a charger which measures the voltage of the batteries as it charges, and stops charging when the battery is full. This ensures a full charge without overcharging, ensuring maximum battery performance, and maximum life for the battery. Smart huh? This is why they are called “smart chargers”.
Another type of charger is fifteen minute “rapid chargers”. They are hard on batteries, and will not competely fill the battery as much as a 60 to 100 minute charger. Charging batteries in 15 minutes also causes the batteries to heat up a lot and reduces the life of the battery.You will get a fuller charge and longer life from your batteries if you choose a charger that takes 60 to 100 minutes to recharge the cells.
Another way that a good charger extends the life of batteries is by offering a “soft charge” option. Some chargers have a 12 hour charge option, but unlike the “timer chargers” we have talked about, they utilise measurement of the change in voltage to prevent under charging or over charging the batteries. If you don’t need the batteries charged straight away, choose to use the soft charge option on your charger.
A slower charge will heat the batteries less, and provide even more life for your batteries.
NiMH batteries lose 1-3% charge each day when not being used. For maximum performance, use a charger with a maintenance charge to keep them topped up. Some chargers have a trickle charge option. A constant trickle will keep them full, but is more charge than they need. A maintenece charge will give them just enough to keep them full.
Maha chargers address all these factors, and thus provide the highest performance for your NiMH and NiCD batteries.
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Filed under: FAQ by Kel |
How many batteries can I charge at the same time?
You can charge up to Ten 9V batteries at the same time in the Maha MH-C1090F 9V fast charger.
Do I have to charge 10 batteries at a time?
No. The MH-C1090F has ten individual charger circuits, so you can charge any combination of 1 to ten batteries.
How will I know when the batteries are charged?
When the batteries are fully charged, the LED beside the battery will change frm red to green. Each battery is charged individually, so it will be cahrged to it’s full potential.
Do I have to take the batteries out once they are charged?
No, when the batteries are charged, the 1090F charger will measure the slight negative change in voltage and know that the battery is at full capacity. It will then switch to a trickle charge to keep the batteries at full capacity until they are needed.
We tried using rechargeable batteries in our microphone but they went flat in the middle of a performance. How do we avoid this from happening?
Todays rechargeables have much higher capacities than even 2 years ago. Our customers are getting 3 to 5 hours from their microphones using the Maha 9V batteries and the Maha 490F or 1090F. This is enough for almost any performance! Rather than leave them in the microphone for several performances, take them out after each performance, and put them back in the charger.
Do I need to run the batteries flat to keep them in good condition?
The older NiCad batteries were succeptibe to the memory effect if not empties. NiHM batteries have a different chemistry, and do not require emptying. Also, the Maha charger uses a unique Flex Pulse charging method which conditions and enhances 9V rechargeable batteries as they are charged.
Can I use the MH-C1090F ten bank charger to charge my older batteries?
Yes. The Maha 1090F is compatible with 7.2V, 8.4V, and 9.6V batteries, so long as they are Rapid Charge Capable 9V rechargeable Batteries. It is also capable of capable of reviving older 9V rechargeable batteries which may no longer be accepting a charge.
We use a LOT of batteries. Is this charger suitable for commercial use?
The 1090F is designed for commercial or home applications. Many professional stage compnies use Maha battery chargers and 9V rechargeable batteries. The charger is very well made, and comes with a 3 year replaceent warranty.
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Filed under: FAQ by Kel |
Q: Why doesn’t Servaas Products sell rechargeable lithium AA batteries?
A: You can search high and low, but at this point in time, no-one makes Lithium Ion or Lithium Polymer rechargeable AA batteries as a matter of safety.
Lithium rechargeable cells are a completely different technology to NiCd or NiMH batteries. LiIon and LiPo batteries require controlled charging and discharging. Lithium battery cells are usually 3.0, 3.6 or 3.7 volts, which is quite different than the 1.2V cells that make up Nickel based batteries. If lithium cells are charged or discharged improperly, they can and do explode. The potential liability on the manufacturer of the batteries means no-one has been prepared to manufacture and sell rechargeable Lithium AA batteries.
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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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Filed under: FAQ by Kel |
How much power do you use to recharge high powered Nickel Metal Hydride (NiMH) batteries?
Charging a set of four 2500mAh batteries with a Maha PowerEx 401FS charger (on soft charge at 300mA charge rate) should take about 9 hours. 300mA at 12V is 3.6 watts of power. To charge for 9 hours at 3.6 watts, that’s 32.4 watthours. At a price of fifteen cents per kilowatt hour, the cost is 32.4/1000 x 15 cents, or 0.48 cents to charge the batteries. Even if the efficiency of the chager was only 50%, the cost would be 0.96 cents to charge the four batteries.
So if you recharge your batteies once every week, the cost is 0.96 cents x 52 weeks, or 50 cents for the whole year.
That’s low cost battery power!
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Filed under: FAQ by Kel |
You can recharge most high capacity NiMH batteries in a Maha battery charger.
Shown above is my Maha MH-801D charging some old Energizer 2500mAh AA and Powertech 800mAh AAA batteries.
Battery technologies have come a long way in just a few years, and continue to improve. A few years ago, the highest capacity AA battery was a 1800mAh NiMH. Before that they were 600mAh NiCD’s. Today we have 2700mAh NiMH AA’s, and tomorrow, who knows?
If you have some old rechargeable batteries you still want to use, then be aware that their ability to take charge from a rapid charger is limited, be it a Maha charger or any other brand. As a rule, AA batteries over 2000mAh and AAA batteries over 700mAh are fine in Maha rapid chargers. To recharge older cells, you are best to choose a charger with a slow option, such as the 5 hour charge of a MH-C401FS or the MH-C801D and not the MH-C204W travel charger.
Low discharge batteries such as Sanyo Eneloop and Powerex Imedions are also 100% compatible with Maha Powerex chargers.
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