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Old 02-06-2009, 08:42 AM   #21
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Re: A123's

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funny my dewalt pack had 10 x 2300 .must be differant model. i think i paid $140= $14 per cell
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Old 02-06-2009, 09:16 AM   #22
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Re: A123's

Originally Posted by RAMJET View Post
funny my dewalt pack had 10 x 2300 .must be differant model. i think i paid $140= $14 per cell
They have both 24 and 36 volt packs with 2300 ma Nano cells.
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Old 02-06-2009, 06:47 PM   #23
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Re: A123's

Lots of 24 Volt DeWalt packs on EEEEK-Bay; 80 us + 8-10 bucks shipping.
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Old 02-07-2009, 01:31 AM   #24
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Re: A123's

Originally Posted by RAMJET View Post
thanks for the heads up on the vps packs .on my way to CTC now.before they sell out .
The battery packs are one of the few items I have not seen on clearance at CT. I have been looking myself. Still can't believe that the local Walmart has the VPX batterys for $30 while everyone else is around $23.

I keep looking for the gold inlay in the Walmart ones but they still look the same as the other VPX packs sold elseware.


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Old 02-07-2009, 04:58 AM   #25
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Re: A123's

Wal-Mart Canada really soaks us compared to US! When we were at par their prices reflected close to 30% premium. I like Wal-Mart but buy almost everything from them, in the US stores.
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Old 02-07-2009, 08:03 AM   #26
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Re: A123's

Originally Posted by Ken Currell View Post
They have both 24 and 36 volt packs with 2300 ma Nano cells.
Did you mean 28V (28.8 actually) - the 8 cell packs?

I picked up 2 of the 36V packs a year ago, and they cost me ~$350 CDN after paying Canada Post and the tax man. Looks like the prices have stabilized *sigh* Still, for how they last and how hard you can hammer them on both charge and discharge, they are a better deal than LiPo's IMO. Mind you, I'm not looking for the best power to weight ratio, I'm looking for bang for buck.
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Old 02-07-2009, 08:30 AM   #27
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Re: A123's

Originally Posted by RAMJET View Post
a 123 are actually cheap&easy to get if you know were to look /black&decker vpx packs are a123 and sell for $20-$25 .i use 2 sutch packs (1100mhr)in each plane .you will have to add ballance leads and have a 123 charger .ROGER

You really don't need the ballance leads for only two cells.

I ran 4 x 2 cell packs all last season without ballancing... no problems.

I fly 35% IMAC planes and use 2 x 2300 mAh packs and tap off of 1 of the packs for ignition. I use a dedicated 5.2 v regulator on the ignition tap just as a precaution to protect the ignition.

I am running the Spektrum 9100 power safe Rx in one setup and a JR 921 Rx with a Smart-Fly Power Expander Pro in the other. Mo problems all season with either setup. Both setups are running 8 x HS5955TG servos. I' ve pushed it to 5 flights between charges just to be safe but never have put more then about 1400 mAh per pack back in.

Once I forgot to hook the pack that had the ignition tap off of it back into the Power Expander after charging so did the 5 flights with only one pack powering the Rx and all the servos. Still that was my 1400 mAh re-charge value stated above so I am reallybeeing cautious I know... could probably stretch it out to 8 or 10 flight but hey it only takes about 8 minutes at 10A to recharge a pack so why push it.

I fly Yaks which have a short coupled nose so I only use the 2300 Mah cells because they are usefull weight and hey 6 oz on a 30 lbs plane is nothing. I use genuine A123 cells I buy for $22.00 a piece that are fresh and virgin.. no need to fool around with breaking down a store bought pack.

I guess if I was flying Electric and using them for motor batterries and needed a lot the store bought packs are the way to go but for 8 cells I'll just buy new... well 12 cause I have two backup packs but have never used them yet.

So I disagree with the opening post in this thread. They are not expensive and are easy to find and work with.

I like them better then Lipos because they will take way more abuse and can handle a higher charge rate with less safety concerns. Lighter is NOT always better. Plus there is the added expense of regulators not to mention an added point of failure. Again my comments are bassed on Airborne Power requirements NOT propulssion soloution.
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Old 02-07-2009, 01:27 PM   #28
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Re: A123's

Originally Posted by Ken Currell View Post
They have both 24 and 36 volt packs with 2300 ma Nano cells.
Originally Posted by roscoe
Lots of 24 Volt DeWalt packs on EEEEK-Bay; 80 us + 8-10 bucks shipping.
Just checked the DeWalt site, 24 Volts looks like NiCd only (fan cooled batteries!)
Nanophosphate cells are available in 36, 28 and 18 Volts.

Talked to a guy at the DeWalt store about his 36 Volt drill (he was getting it repaired), he told me he had won several bets on stating it was the same weight as an 18 Volt with NiCd.
I would have to say it's close at 6.75 to 6.1 lbs, you only seem to save 1/2 a pound more on the 18 V Nano packs.
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