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Old 01-29-2010, 11:54 AM   #16
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I'll be watching.

I'm still waiting for my LiFePO4 cylindrical cells to be made. From the looks of it, it might not happen soon.
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Old 01-29-2010, 03:52 PM   #17
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Originally Posted by lutach View Post
I'll be watching.

I'm still waiting for my LiFePO4 cylindrical cells to be made. From the looks of it, it might not happen soon.
Eeeeekkk!!! why on earth would you want to go back to cylindrical cells, the new hard cased cells look so much more professional and no more battery bars, jigs... etc
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Old 01-29-2010, 09:09 PM   #18
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they already make lifepo4 cylinder cells. They can't be soldered, you have to tack weld tabs on them. The cells are ideal for mod because a $60 pack can get you through an entire season w/ good results. A 2s 1p a123 2300 pack will torch a track w/ a novak 3.5 & get you your 6 minutes of run time. Oh yeah, its a $40 pack.
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Old 01-29-2010, 09:28 PM   #19
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Quote:
Originally Posted by Sam-E View Post
Is the maxamps a deans or similar plug or the plug in type like the Reedy.
maxamps comes with no plug and hyperionmethod taps, but they offer many diffrent kind of plugs and balancing taps for extra charge



how about A123 packs


6.6v 4600 MAH LI-ION NANO PHOSPHATE HYPERSONIC PACK A123 * Inherently safe chemistry will not explode or catch fire * Twice the cycle life of competitive Li-poly batteries * 50% more power (up to 60C burst) than competitive Li-poly batteries * Fast charge capable - reach 100% state-of-charge in 15 minutes using the Hypersonic ChargeSafe÷ balancing fast charge system. * Balancing connector (compatible only with Sonic Charge (AQR400088)) * Overview: Hypersonic÷ is a high power density battery pack safely providing up to 30C continuous output and 60C burst rates. Unlike traditional lithium-ion, Hypersonic÷ packs have exceptional safety characteristics with no risk of spontaneous combustion. All component cells are UL-1642 compliant. Deans Ultra connectors are standard.
Designed for exceptional power output, durability, and safe operation, Hypersonic÷ Lithium Ion is the next generation battery for the R/C market. Using a unique, patented, revolutionary lithium-ion chemistry developed at A123 Systems, Hypersonic÷ packs provide high performance and abuse-tolerance unmatched by any other battery chemistry.

With its ultra low-impedance design and high power capability, Hypersonic÷ offers high performance and long cycle life characteristics in a robust, safe package, able to deliver up to 60C burst rates.

Hypersonic÷ packs can also be connected together to create custom configurations for almost any electric propulsion application.

pack is around $70
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Old 01-29-2010, 11:21 PM   #20
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Here is a 2s A123 pack in my 12r5.1. It is a tight fit.
Cost for the pack was less the US$18. Pack last 15 + minutes with a 10.5. Quickest i can charge it is at 5A and its ready is about 25 minutes, this is due to the charger not the batteries. These can be charged at 10C
The pack should be good for 300+ cycles, if not more. Better option then the SMC 1-cells i have that cost US$60 each.
They can be soldered, very tricky though.
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Old 01-30-2010, 10:08 AM   #21
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Quote:
Originally Posted by Sam-E View Post
Eeeeekkk!!! why on earth would you want to go back to cylindrical cells, the new hard cased cells look so much more professional and no more battery bars, jigs... etc
They're light and with a new chemistry is capable of a nice high discharge rate. They will ot puff, they have vents and their would not be the need of a plastic case. Plus it would definately be ROAR approved since it's made like a NiCD and NiMH.
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Old 01-30-2010, 10:10 AM   #22
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Quote:
Originally Posted by party_wagon View Post
they already make lifepo4 cylinder cells. They can't be soldered, you have to tack weld tabs on them. The cells are ideal for mod because a $60 pack can get you through an entire season w/ good results. A 2s 1p a123 2300 pack will torch a track w/ a novak 3.5 & get you your 6 minutes of run time. Oh yeah, its a $40 pack.
The cells I'm getting done are not like the A123 cells. They'll be a Sub-C size and can be soldered like a NiCD or NiMH. It would be nice if A123 would also make other sizes (Smaller) cells.
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Old 02-24-2010, 02:52 PM   #23
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LIFE batteries are now approved!

Here is the first one on the list:

Li - Fe Brick Case 2 Cell Epic-Intellect IP4000 6.6V TRI20292 February 1, 2010
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