A123 in Large Scale Planes. (Full Version)

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jeanv -> A123 in Large Scale Planes. (8/20/2007 8:55:02 AM)

Hi,

I have a H9 46% Ultimate and needs to replace the two flight packs. Are these new A123's suitable for this type of planes? I have Powerflites's 6v Regulators; can I use this? Can the Powerflite charger charge these batteries?

Regards
Jean



Walt Thyng -> RE: A123 in Large Scale Planes. (8/20/2007 2:20:29 PM)

I can't think of a reason why you couldn't use A123s in any a/c large enough to carry them. I'm just finishing a 1/4 scale racing bipe that will use them. The regulator doesn't care what the source of the voltage is. I don't know the Powerflight charger, but if it's LiPo capable and you can set the cell count and voltage you probably could use it. Otherwise get SLK's 'dapter. I'm using one on my Schultze Isi 360 and it works great.
Walt



everydayflyer -> RE: A123 in Large Scale Planes. (9/9/2007 2:47:14 PM)

I know this is an old post but the same question comes up fairly often.

A 2S A123 makes an excellent receiver pack for larger aircraft and it requires no voltage regulator / BEC.
A fully charged 2S A123 will be approx. 6.2- 6.8 under a normal servo / receiver load which places it in the same range as a 5 cell Ni pack. The A123 can supply more amps. than the associated wiring can handle and they can be recharged very quickly if you use heavy ga. charging leads direct to the cells.


Charles



Panzlflyer -> RE: A123 in Large Scale Planes. (11/15/2007 2:55:41 AM)

I am trying to find out what size heat shrink will fit a 2 cell pack covering the ends/connection.

Any help thanks



bodywerks -> RE: A123 in Large Scale Planes. (11/15/2007 1:46:39 PM)

4"



Panzlflyer -> RE: A123 in Large Scale Planes. (11/16/2007 12:44:06 AM)

Thanks



mrdakota -> RE: A123 in Large Scale Planes. (12/17/2007 12:29:34 AM)

Sorry but I need to steal this thread and ask a stupid question. How are most people charging these large packs? I have a 14s3p setup split up into two 7s3p packs. In the field it takes me along time to charge each of the two with my Bantam BC8 charger.

thanks,
Keith
Far Northeastern IL



Red Scholefield -> RE: A123 in Large Scale Planes. (12/17/2007 1:08:52 AM)

TME Xtrema

CHARGER SPECIFICATIONS:
# Cells: 1-10 cells
Input Voltage: 10.5V - 15V DC @ up to 20 AMPS
Input Connectors: Super heavy duty Alligator Clips with 3 ft. cord.
Case Size: 6.25 x 3.25 x 2.25 in. (159 x 83 x 57 mm.)
Weight: 22 oz. (624 grams)
Charger Output Connections: 14 Gauge Fine Strand Silicon Wire
Volts per Cell: 3.60V (m1 cells) - 4.20 volts in .05 volt steps
Charge Rate: 50mA - 8000mA in 50 mA steps (4000mA max @ 10 cells)
Battery Types: Lithium Ion, Lithium Polymer
Safety Timer: 10 - 990 minutes (120 default)
Fan: On only when needed for longer life.
Safety Temperature Cutoff: 60°F - 130°F (104°F default)
Display: 4 line X 20 character LCD display
Audible Alarms: Piezo Speaker alarms15 seconds, beep once or disable



mrdakota -> RE: A123 in Large Scale Planes. (12/17/2007 1:20:36 AM)

I'm looking for something a bit quicker to pump in, the BC-8 will put in 7A with the 7 cell pack if my field battery can keep up. It takes 175w to charge each battery for about 1 hour each. And that is with a large heavy duty power supply @ home. In the field the supply batteries can't take that too long and it will cut out if the voltage gets below 10V.
I'm serious here, how are these big guys carging these big packs in the field without 480 3 phase[:D]
Keith



mrdakota -> RE: A123 in Large Scale Planes. (12/17/2007 11:39:54 AM)

Red, I've looke at the TME Xtrema charger before, but it can only charge @ about 50 watts. The BC-8 can input close to 175watts.
Correct me if I'm wrong, I really like the engineering in the TME product line.
Keith



dick Hanson -> RE: A123 in Large Scale Planes. (12/17/2007 2:06:03 PM)


quote:

ORIGINAL: mrdakota

I'm looking for something a bit quicker to pump in, the BC-8 will put in 7A with the 7 cell pack if my field battery can keep up. It takes 175w to charge each battery for about 1 hour each. And that is with a large heavy duty power supply @ home. In the field the supply batteries can't take that too long and it will cut out if the voltage gets below 10V.
I'm serious here, how are these big guys carging these big packs in the field without 480 3 phase[:D]
Keith

My 7 cell pack is actually a 3&4-into a series harness= 7 in the model - so I charge using two small chargers (CellPro 4 )
I also have a DAPTER witha Astro Flite 12 deluxe - great setup
but the field batt-
My usual setup is a Harley Davison top of the line battery -small but weighs 22lbs - really high deep discharge capacity
For less money Wally Mart has a big Marine deep discharge for about 60 70- bucks
you want a deep cycle type batt with a good warrenty



everydayflyer -> RE: A123 in Large Scale Planes. (12/17/2007 8:07:21 PM)


quote:

ORIGINAL: mrdakota

Sorry but I need to steal this thread and ask a stupid question. How are most people charging these large packs? I have a 14s3p setup split up into two 7s3p packs. In the field it takes me along time to charge each of the two with my Bantam BC8 charger.

thanks,
Keith
Far Northeastern IL

Mastech 50volt / 20 amp. variable bench power supply plus two large capacity deep cycle batteries and converter or a small (1000 watt) generator.

Charles



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