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cells for speed 400 6v 5x4 prop

Old 03-22-2004, 03:36 AM
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Ronnies
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Default cells for speed 400 6v 5x4 prop

Hi I have been using 7 cell nicad battery packs for my model electric speed 400 motor airplanes, I get about 6 minutes full throttle flight time with this set up on Sanyo 700 mah cells, now all the guys in my club are using everything and type of battery to run their airplanes, I thought I could start with store brand Go of Eveready AAs around 1800mah , I cant use my nicad chargers they tell me, so I used my wall charger overnight and charged up an 7 cell pack , the results was bad, the motor had no power and lasted 1 minute, what's wrong, they the guys in the club say those cells I used were for flashlights, what do you think, now I just purchased a good sale deal on radio shacks 1000mah nicads ,I stick to them AA size, what do you think? please email me [email protected]
Old 03-22-2004, 02:10 PM
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pikebishop
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Default RE: cells for speed 400 6v 5x4 prop

kan 1050 or hecell 1100. dynamo electrics for the kan's . great price per cell. make your own packs.
Old 03-23-2004, 08:15 PM
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Default RE: cells for speed 400 6v 5x4 prop

Hi Ron,
When buying rc batteries you can get very confused. Keep in mind that planes and cars are going to draw much higher amps then what store bought AA batteries were designed for. Imagine this . If you put your 7 cells in a flashlight it would last many hours at a slow draw and be fine but eveready batts are most likely not designed to go HIGH OUTPUT at the 5 - 10 amp range so they cant.
Another Very important thing is that "packs " have to be conditioned so all the cells in the pack reach the same charge / discharge point. The pach should be Fully charges at a slow rate and then fully discharged to .7 -.8 volts per cell. which is 5 volts for a 7 cell pack. This should be repeated at least 3 times. A good charger will do this for you.

great site to get batteries at good prices.
http://www.batterystation.com/nicads.htm

Jim B
Old 03-25-2004, 09:08 PM
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Default RE: cells for speed 400 6v 5x4 prop

Try the CPB1400's found on this site:

http://www.cheapbatterypacks.com/

Get a 8-10 cell pack (10 is the most powerful, but may make the motor have a shorter lifespan). You'll get alot of power and duration; they're identical in performance to KAN 1400's (VERY good packs), but cheaper.

--Alex
Old 03-25-2004, 09:08 PM
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raptor22
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Default RE: cells for speed 400 6v 5x4 prop

Try the CPB1400's found on this site:

http://www.cheapbatterypacks.com/

Get a 8-10 cell pack (10 is the most powerful, but may make the motor have a shorter lifespan). You'll get alot of power and duration; they're identical in performance to KAN 1400's (VERY good packs), but cheaper.

--Alex
Old 03-26-2004, 06:34 AM
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Ronnies
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Default RE: cells for speed 400 6v 5x4 prop

thanks,this was it, even though the capacity was 1800 mah>Keep in mind that planes and cars are going to draw much higher amps then what store bought AA batteries were designed for[:-]
Old 03-29-2004, 07:28 PM
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Ronnies
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Default RE: cells for speed 400 6v 5x4 prop

rapter 22 , how long does it take to charge these cells at the field? from[X(] Ronnie,Try the CPB1400's found on this site:

http://www.cheapbatterypacks.com/

Get a 8-10 cell pack (10 is the most powerful, but may make the motor have a shorter lifespan). You'll get alot of power and duration; they're identical in performance to KAN 1400's (VERY good packs), but cheaper.
Old 03-29-2004, 11:37 PM
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raptor22
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Default RE: cells for speed 400 6v 5x4 prop

I charge at 2C, so 1/2 an hour. That's kinda hard on the batteries; 1 hour is best but its acceptable. Thay're really good cells.

--Alex
Old 03-30-2004, 12:25 AM
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Ronnies
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Default RE: cells for speed 400 6v 5x4 prop

ok thanks
Old 03-30-2004, 07:53 AM
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Default RE: cells for speed 400 6v 5x4 prop

You know what "C" is, right?

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