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Question #1:
My Digital Camera uses 1.5V AA batteries and your NiMH AA rechargeable batteries are 1.2V. Will they still work ? |
Answer #1:
Yes, you can safely use our NiMH batteries without any problems. They can be used in place of your original batteries in almost all digital cameras , film cameras, flash units as well as most other electronic equipment. Actually when they are fully charged they will measure around 1.4v per cell . NiMH (Nickel Metal Hydride) rechargeable batteries are fast becoming the most popular choice of digital camera users, photographers, cellular phone and laptop users, and many others because these batteries have a much higher capacity and are virtually memory free. These rechargeable batteries do not need to be discharged every time before recharging. NiMH batteries can be damaged from heat by overcharging but this is easily avoided by using a high quality, microprocessor controlled battery charger or a battery charger designed for NiMH batteries and charging as directed. |
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Question #2:
I am purchasing these NiMH batteries for my Nikon Cool Pix 900 camera which I recently purchased. The camera manual states that 1.5volt batteries are needed. In your testimonials, a user of a Nikon Cool Pix 900 stated that the NEXcell NiMH batteries work well. After reviewing the batteries, I have noticed that they are marked as 1.2volt. Are these batteries acceptable to be used in my camera and was the person in your testimonial using these or a 1.5volt AA NiMH battery ? If the batteries are acceptable, are the batteries sent already charged ? |
Answer #2:
All NiMH ( Nickel Metal Hydride ) rechargeable batteries as well as all Nicad Batteries are all 1.2 Volt for consumer use. Once charged they average 1.3 to 1.4V . So you can be assured that these are the batteries that everyone is using in their digital cameras and other electronic equipment. We ship a large quantity of our NEXcell NiMH batteries per week just for digital camera use and we have found that around 30% or more of our customers are using a Nikon CP900. We also use one here ourselves for a lot of our product pictures. The NiMH batteries are always shipped uncharged and must be fully charged before their first use. |
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Question #3:
Does temperature effect the charging of your NiMH batteries? |
Answer #3:
Yes, but usually only if charged outside of the optimum temperature range of 0°C to 45°C when Slow Charging and +10°C to 45°C when Fast Charging. See the below for more detail |
Typical Battery Charging Performance of NiMH Battery Cylindrical Cells Standard Charging: Charging at 0.1C standard rate for 14-16 hours will greatly enhance the NiMH battery's service life. Our NiMH batteries can withstand overcharge at 0.1C rate indefinitely. Charging at or below 0.1C rate is suitable across a temperature range from 0oC to +45oC. Fast Charging: All our NiMH rechargeable battery series can be fast charged at rates from 0.5C to 1C. Fast charge termination measures should be employed. These include: Temperature Cut-Off ( TCO ), Rate-of-temperature rise ( dT/dt ), negative Delta V ( -dV ). A timer control set at 105% of nominal capacity can be used as an additional protection. For maximum capacity, a trickle charge can be applied after fast charging. We recommend top-off trickle charging at 0.1C for 2 hours or 0.2C for 1 hour. Fast charging can be done at temperatures from +10oC to +45oC. |
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Question #4:
What is the average discharge curve of your NiMH batteries ? |
Answer #4:
The chart below shows the average discharge rate of our NiMH batteries. Battery discharge rates can vary depending on the operating temperature. |
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| Question #5: |
| What are the number of charge / discharge cycles I can expect from your NiMH batteries? |
| Answer #5 : |
| Under normal conditions you can expect any where from 300 - 1000 charge / discharge cycles from our NiMH batteries. Cycle Life is dependent upon usage conditions and type of charger used. |
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Question #6:
Do your NiMH batteries lose any capacity during their useful life ? |
Answer #6:
Yes they do lose some capacity, but it is normally very, very gradual. This is true with all rechargeable batteries, but some have a very high rate loss. Our NiMH batteries are designed to have a much longer cycle life than older generation NiMH batteries. Normally after 300 - 400 cycles, battery capacity will decrease 10 to15%. Keep in mind that this is the amount of charge the Batteries will hold not the quality. See the chart below. |
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| Question #7: |
| My Minolta Dimage V digital camera requires 6+ VDC and the NiMH batteries you offer supply only 4.8 on average. What effect will that have on my camera? |
Answer #7:
Be assured that his is not an issue at all. Our NiMH Batteries can be used in your Minolta Camera. We have many customers who have the Minolta Dimage V and are getting excellent results from our NiMH batteries.Actually when charged the NiMH "AA" rechargeable battery cells have 1.3V to 1.4V per cell or 5.2 to 5.6V from a set of 4 NiMH batteries , and yet they will not only out last Alkaline and Nicads, but in many instances they also will give better performance. Our NiMH batteries are specially designed for high current drain applications such as Digital Cameras, Flash Units, etc.. |
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Question #8:
How well will your NiMH Batteries work in Flash Units and Film Cameras? |
Answer #8:
All NiMH Batteries will all work very well in flash Units, due to their very fast cycle time. They also work very well in standard film cameras also. We have many customers who are professional Photographers and are now using our NiMH rechargeable Batteries in all their equipment in place of standard AA batteries. |
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Question #9:
Are the most of your NiMH batteries virtually the same or is one better than the other? |
Answer #9:
Actually there is very little difference of the top brands from what we have found in all our tests. |
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| Question #10: I just purchased some of your Maha PowerEx NiMH batteries. I was told by someone that they should be "conditioned" prior to use so that they have maximum capacity and life. Can you tell me what the voltage and current profile is for the conditioning cycle? Should this be done frequently? Thanks |
Answer #10:
Not true. Conditioning requires a charger that automatically performs this function and is recommended for battery packs mostly. This is actually not totally necessary for individual battery cells . Conditioning should only be done occasionally because too much is worse than none at all and should only be done when necessary. ie. when the Batteries fail to charge or operate as they did in the past. The main requirement is that you use a charger that is designed for NiMH batteries. Just charge them as your battery charger instructions recommend.. and you should have no problems. One thing you will find about NiMH batteries is that as you use them they just keep getting better. |
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| Question #11: I was removing my NiMH batteries from my charger and I dropped one of them on a concrete floor. Now that battery does not want to take a charge. is it possible that by dropping it I damaged it somehow ? |
Answer #11:
Yes , by dropping this battery you have probably caused some internal damage. These rechargeable batteries are like any rechargeable battery such as your car battery or any other piece of electronic equipment. Dropping can cause severe damage ! If you do drop them we recommend replacement. Even if no damage is apparent, the rechargeable battery could later develop a short or a leak while in the equipment and then cause even more damage. |
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Question #12: I know that it is not wise to mix different brand/types etc. batteries in the MH-C777 charger. But what about mixing batteries of same type, but different discharge levels? Ie. I have 8 Maha's. If 4 of them are discharged and the other 4 fully charged - can I put them all in an 8 slot tray, clip it onto the MH-C777 and expect them to charge correctly?
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| Answer #12: You should always make sure all rechargeable batteries are at the same or very close to the same discharge levels. Never mix NiMH batteries that have different levels of charge. The MH-C777 has no way of knowing which batteries are charged and which ones are not. Failure to follow these instructions when charging your batteries can lead to excessive charging , battery damage or leakage, or even damage to the MAHA MH-C777 charger itself. If you must charge the 4 batteries that are discharged you need to get a 4 cell holder and charge only those 4 rechargeable batteries. |
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| Question #13: Can you store NiMH batteries for long periods without use and still charge them fully? -Michael
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| Answer #13: Like any rechargeable battery , even the one in your car, some capacity will be lost after a certain amount of time when rechargeable batteries are stored and not used for extended periods of time.. Normally all that is required with most NiMH batteries is to run them through 3 charge / discharge cycles and normally this will revive them to full capacity. Also keep in mind that even when used on a regular basis, some capacity is lost with each cycle, although very small. However considering how inexpensive NiMH batteries are and how many alkaline batteries they replace this is of little importance. |
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Question #14:
I have purchased some AA and AAA Maha batteries from you, and also a Maha C204F re-charger. I am very pleased with these and I am telling all my friends about them. I understand it is not as necessary to have the Maha re-charger "condition" Nickel-Metal-Hydride batteries every time like one might do with Nicads. But neither your web-site nor the Maha charger give any indication how often might be advisable for conditioning. Would it make sense to condition NiMH batteries every third or fourth time they are recharged? Every 10th time? What would be a good recommendation? Thanks for your nice website and your good service |
| Answer #14: There is no rule of thumb for conditioning NiMH batteries. However you will usually know when your rechargeable batteries need to be conditioned and do not seen to be performing as they once did. At this point you should consider using the conditioning cycle. Possibly by conditioning your rechargeable batteries they will then start performing as they did in the past. |
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Question #15:
Do you folks have NiMH AA and AAA rechargeable batteries available with solder tabs? I have an old (very old) aviation band HT whose battery pack was built using AA's with solder tabs, and I need to build a new one as the old one long ago stopped taking a charge. - E. Poole |
| Answer #15: Yes, we now have the AA NiMH batteries with tabs available at the present time only. (MAHA - 2000mAH AA NiMH Batteries with Solder Tabs ) We have no information when or even if the "AAA" NiMH batteries with Tabs will be available. Please Note: Soldering on NiMH Batteries can cause them to explode, leak, or weaken their external case, or plain just cause them be damaged and not work unless done by a capable individual with proper soldering knowledge. |
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Question #16:
Are NIMH batteries also good for flashlights? ie AAA & AA size Maglites? Are any battery chargers available that will charge more than 4 rechargeable batteries at a time? Thanks D. Stefan |
Answer #16: The NiMH AA & AAA rechargeable batteries are excellent for Mag-lite flashlights. As a matter of fact they work well in any flashlight.
Also both the Maha C-777Plus will charge ten AA or eight AAA rechargeable cells when used with the appropriate holder. We currently have only a eight cell AAA battery holder available, however it could charge ten AAA cells if a ten cell holder was used. |
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Question #17:
This is my first time ordering a charger and batteries. Please verify that the that charger and batteries are compatible and appropriate a Nikon Coolpix 950 digital camera. Thanks! Anne
Code Description Qty
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MAHA-AA-T AA PowerEx 1800mAH Battery 8
MAHA-MH-C204F C204F Battery Charger-Free 12V Cor 1
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| Answer #17: Not only can we verify it, we use the exact same rechargeable batteries and battery charger for our Nikon 950s that we use here. We also use the MAHA PowerEx 1800 mAH and the GP 1800 mAH batteries with excellent results. It's a fantastic camera, but without NiMH batteries it would be very expensive to operate. Again please note that our NiMH AA, AAA, C, or D size rechargeable batteries can be used as a direct replacement for any standard AAA, AA, C, or D size battery. Sales Dept.
- Note : D and C size rechargeable batteries are in stock. |
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Question #18:
The rechargeable batteries below are to be use in Olympus c2000z. If they are not compatible, let me know...
Code Description Qty
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HE-DAFGBA QUEST Deluxe Gold 1800 NiMH Kit 1
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| Answer #18: Not only are they compatible they are one of out top sellers for Digital camera use. Again please note that if your equipment uses standard size AA, AAA, C, or D sizes then our NiMH AA, AAA, C, or D size rechargeable batteries can be used as direct replacements. |
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| Question #19: At 11:15 AM 10/25/99 -0400, you wrote Hello, I have a question about the NiMH batteries you sell. I have bought a large number of them from you and have been very happy with the performance of the Maha batteries. I seem to remember seeing it mentioned on your site about these rechargeable batteries gradually losing their charge when after they're charged, if they're not used for a while. Is this true? Because I have so many sets of these NiMH rechargeable batteries, I'm afraid they will "bleed-down" before I need them. I'm going to make a battery charger (I'm an engineer) to keep 16 rechargeable batteries trickle-charged. Please tell me if the NiMH rechargeable batteries "bleed-down their charge over the course of a few weeks. If I'm mistaken about this, I won't have to build this device. - Eric |
| Answer #19: - Eric - While it is true that Nimh Batteries like any rechargeable battery do loose their charge over a period of time, keeping them on a very small trickle charge will maintain them in a fully charged state, if you must always have fully charged rechargeable batteries. This is usually not a factor as long as you use them within 5 to 10 days of their initial charge. We have and still use Maha NiMH AA rechareable batteries in our flashlights and they usually last well over 1 to 2 months with intermittent use. We also have placed them in a flashlight and then checked them after 3 weeks and found the light to be plenty bright and still put out 1 to 1.5 hours of light before running down and needing a charge. We also use the Maha NiMH AA rechargeable batteries in our Nikon 950 digital cameras. We have had one of the cameras sitting for as long 3 weeks ( after taking 10 to 20 pictures ) , and then turning the camera on , we were able to still take 20 to 30 pictures before the rechargeable batteries were in need of a charge.
Dennis - Sales |
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| Question #20: At 1132 AM 10/24/99 -0700, you wrote Dear Thomas Distributing-- I just placed an order for 8 Maha PowerEx AA rechargeable batteries to use in my new Olympus C-2500L digital camera. I did not order a battery charger, assuming I could use the Olympus Camedia Ni-MH Battery Charger BU-100 that came with camera. Output for this battery charger is listed at 1.2V 490mA x 4. The Olympus literature goes to great length discouraging the employment of any rechargeable batteries other than their own in this battery charger. Please advise me if I can use the BU-100 charger with the Maha batteries which should be arriving in a day or two from your company. I appreciate your prompt attention to this matter, as I shall not be charging the batteries until I get a go-ahead from you. Perhaps this would be an appropriate topic to add to the FAQ page on your website. Thank you. - William Taylor |
| Answer #20: William - We have many customers who are using our Maha rechargeable batteries in their Olympus Battery Chargers. To date we have had no one tell us that they have experienced any problems. Please note that any good NiMH battery charger should be able to recharge any good quality NiMH battery without any problems. Wayne - Sales |
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| Question #21: At 0918 PM 10/25/99 -0700, you wrote I'm interested in your Maha rechargeable nickel-metal hydride batteries , I will be using them in Olympus D450Z Digital Camera, my concern is, will it fit inside this camera, I have just purchased 4 Energizer ACCU Rechargeable NiMH "AA" batteries and they fit in so snug I have to use dental tool to remove 3 of the 4 batteries, I'm afraid to use them for fear they may mold-form from heat inside the compartment. Thank You - R. Haholy |
| Answer #21: Ron - All the News groups have several postings about this very problem. Hundreds of people have even damaged their cameras trying to get these batteries removed from their cameras. There is no problem with any of our NiMH rechargeable batteries. They are made to specs in size, and will fit perfectly. - Sales Dept. |
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| Question #22: Will it hurt the NiMH batteries to run the voltage down to 0 volts? I accidentally left the radio on and ran them down to nothing. They seemed to charge ok although is there any capacity loss when this happens? - Bill |
| Answer #22: Bill - Usually no capacity loss occurs, but this could possibly damage the rechargeable batteries.. There is the danger of causing the rechargeable batteries to reverse voltage, and then they will no longer accept a charge. Since you were able to get them to accept a charge, you may be okay. Also it is also best to recharge the rechargeable batteries before they are totally dead. This will extend their useful life considerably. |
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