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  1. #11
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    Quote Originally Posted by A_C View Post
    You'r right about the faster chargers charging with higher Amps, but i think it's also with higher Voltage as well.
    When I wrote, "The volts should be the same" I was referring to the battery voltage. Of course, some charges can charge by "voltage" as well. Some rechargeables also show a .05 higher voltage rating, but that is probably just a marketing ploy. You may also notice that non-rechargeable batteries usually show a higher voltage rating; however, and more importantly at hand is that the discharge rate is different from rechargeable batteries. By the way, Radio Shack has an inexpensive battery charger that can charge between 1-8 AAs, AAAs, and a couple of 9V batteries--that's the slow charger I use when I am not in a hurry.

    Bob7766
    Why don't you tell us the brand name of your charger and the batteries? I'd like to know, so I don't purchase those batteries. Myself, I never take that long to cycle batteries, so either I am not cycling batteries as many times as you are or I am charging/discharging the batteries at a faster rate. Some of the high dollar chargers also print out spec sheets for each battery, i.e. Competition Electronics--which is very useful for matching batteries. Then there is the peak adjustment.

    Below is a quick link to an article by one of the companies who puts out chargers used in the R/C market. I also have one of their brand chargers and power supplies.
    http://www.teamnovak.com/tech_info/t...ers/index.html
    Last edited by TNB; 11-22-2006 at 10:13 AM.
    Canon G10 - Nikon D3 - Sony P&S - Flickr Account - Non-updated Website

  2. #12
    Join Date
    Oct 2006
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    3

    Battery Charger--LaCross Technology Alpha Power

    My charger is La Crosse Technology AlphaPower Battery Charger Model BC-900.

    The batteries were Lenmar NoMem. However, I can't fault the price and the company providing me with replacement batteries. I use the batteries in a couple of Canon P&S, three portable radios, FRS radios, GPS devices, remotes so need a lot of batteries.

    My brother is a radio controlled airplane enthusiast and he will only use Sanyo batteries as he claims there failure rate is low. My understanding is that any NiMH battery can suddenly fail?? Failure when you are flying a couple thousand dollar RC plane is not desirable.

    Bob

  3. #13
    Join Date
    Nov 2006
    Location
    Michigan
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    143

    amps and volts

    I use a peak charger for R/C Planes, I can charge at various rates. The Voltage and amprage both vary. My charger will only work properly with ni-cad as it is older. It will charge the nimh but not properly peak them. It is true the faster the charge the shorter the life. Also a slower charge gives more mah.
    Not all 2500 mah batteries last the same amount of time. Consumer reports did a test and I think the Rayovac was one the better brands for holding their charge
    40D 28-135 IS USM, 70-200 f4L IS,, 18-50 f2.8, 430 EX II, Canon S3

    “Those who desire to give up freedom in order to gain security will not have, nor do they deserve, either one.”

    “The only thing more expensive than education is ignorance.”

    Benjamin Franklin

  4. #14
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    Mar 2006
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    Bob,
    Most people I know who are flying RC planes that expensive are using LiPos unless it is just for a receiver pack, then it is usually NiMHs. A well prepared RCer would also have several receiver packs as well or at least charge them between uses in the field. By the way, I also own around 60 RCs--helicopters, boats, cars, and a hydrofoam I have yet to put together. Types include gasoline/oil mix, nitro, and electric (brushed and brushless). By the way, one site provided the following about your charger, "All modes automatically default to a 200 mA charge."

    Talkingdog,
    In the smaller Kyosho Mini-Z Racers, I've tried Rayovacs and several other brands myself, including some Lenmar brands as mentioned in Bob's post--I had to cycle the heck out of those Lenmars when I first purchased them. However, those were AAAs.

    Since I've had good luck with GP AAAs when racing the smaller Kyosho Mini-Zs on both a national and international level, I tend to use GP AAs in my SB800 though I have a few other brands (one brand purchased at the camera store and another set came with my Nomadio Sensor transmitter). Quite frankly, I've cooked the heck out the GP AAAs and charged them numerous times in one setting (that happens when running Zs 11-12 hours straight).

    By the way, I noticed that your using a NiCD charger to charge NiMH batteries . . . A few NiMHs have blown around here (as well as LiPos) due to incorrect charging.
    Last edited by TNB; 11-28-2006 at 06:13 PM.
    Canon G10 - Nikon D3 - Sony P&S - Flickr Account - Non-updated Website

  5. #15
    Join Date
    Nov 2006
    Location
    Michigan
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    143
    No, actually I don't charge the nimh camera batteries with the peak charger. I do need to update my charger.(Year after I bought it they changed it to charge the nimh's, just my luck again) I only have a float plane now and don't have time to fly very often.Still have a couple of good nicad packs so I won't be getting the nimh's to soon. Maybe if I get a new scale plane. With the peak charger I only have about a 30 minute delay which is enough time to get ready for the next flight. To much trouble taking off the wing every flight to change batteries. I just have a charged spare pack in case mine goes bad suddenly. My nicad receiver batteries are apx 3 years old and still working fine. I don't cycle them unless they are setting a long time before I fly.
    40D 28-135 IS USM, 70-200 f4L IS,, 18-50 f2.8, 430 EX II, Canon S3

    “Those who desire to give up freedom in order to gain security will not have, nor do they deserve, either one.”

    “The only thing more expensive than education is ignorance.”

    Benjamin Franklin

  6. #16
    Join Date
    Dec 2006
    Location
    So Calif
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    3,226
    You must use a charger designed for NiMHs with NiMH batteries. Ideally it should charge at a rate no higher than the capacity, therefore it should take at least an hour.

    Powerex makes a highly-rated (by an online battery/charger tester guru) MH-C204W-Worldwide-Charger with 8 x 2700 mah for about $65, which is on the expensive side :-) 2 batteries in a hour, 4 in 2 hours, and the plug is not for "worldwide" use. It has a conditioning function as well.

  7. #17
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    Mar 2006
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    $65 is not expensive for a charger compared to something like Shulze, Competiton Electronics, Futaba, or even something like Novak, which also needs a separate power supply and doesn't come with batteries.
    Canon G10 - Nikon D3 - Sony P&S - Flickr Account - Non-updated Website

  8. #18
    Join Date
    Dec 2006
    Location
    Detroit Area, Michigan
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    19
    Quote Originally Posted by SpecialK View Post
    Powerex makes a highly-rated (by an online battery/charger tester guru) MH-C204W-Worldwide-Charger with 8 x 2700 mah for about $65, which is on the expensive side :-) 2 batteries in a hour, 4 in 2 hours, and the plug is not for "worldwide" use. It has a conditioning function as well.
    I just ordered the Powerex C204W with 4 of their 2700mah batteries last night. I've also read good things about it, and I'm hoping to get it soon because I just got my Canon A710IS yesterday for Christmas and it absolutely destroyed the alkaline batteries that were in the box in just a few hours.

    It was about 41 dollars with free shipping for the charger and batteries from NewEgg.
    -Matt
    Ancient: Sony DSC-S85
    My Baby as of 12/25/06: Canon PowerShot A710IS

  9. #19
    Join Date
    Jul 2005
    Posts
    41
    I also have an A710IS. I use a Powerex C401-FS charger and 2700mah batteries. Those Powerex batteries are great. I had them in the camera for weeks, went on a 4 day trip. Took 300 shots, reviewed them several times in playback mode and never had to use my backup batteries.

  10. #20
    Join Date
    Dec 2006
    Posts
    3

    Question

    I've just read through this topic and I'm slightly confused being a novice in this sphere.

    My question is basically: I've got a Maha MH-C204F charger and some 1600mah batteries.

    Would this (or any other) charger be able to safely take higher mah batteries, i.e. 2500mah and would they last proportionately longer before running out that the equivalent brand 1600mah?

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