Altair Nano battery update... - RC-Monster Forums

zeropointbug · 12:14 AM

Hey, i just read a new page on the cells, it looks like they have a the following specs:

-2.3 volts nominal (which makes for more pack voltage flexibility/options)
-1.6Ah cell, small cell, they say they have various sizes
-Energy density: 90Wh/kg (100% at 25'C) very efficient
-Super flat discharge curve, performance will be 100% until dump
-Temp. range: -50C/-60F to +75C/+165F (-60C discharge)
-Discharge rate: 100+ C rate
-Charge C rate: up to 50+ (20C charge @ -30C) charge in 1 minute
-Cycle life: Over 15,000 100% DOD, then at 85% retention still
-annual maintanance: None
-Calender life: 20+ years
-Safety: With no graphite anode, and thus no SEI layer, this battery is safe to 200'C
-Green: no toxics or heavy metals

-voltage under load is not known as of yet... hopefully is high, otherwise 100+ C is pointless (not that it isn't anyways)

These batteries sound very good, the 90Wh/kg is kinda disappointing to say the least, as all other areas are fantastic. But, it delivers full Ah rating, so it's actually comparable (in real world apps) to standard Lithium Ion, Or A123 M1 cells. I hope to get a hold of some sample packs (not on market yet) for testing soon.

Cheers

BrianG · 12.16.2006, 12:41 AM

Aww, man; yet another charge profile to get...

zeropointbug · 12.16.2006, 12:51 AM

Cc-cv :027:

BrianG · 12.16.2006, 01:04 AM

Well, yeah, if you have one of those expensive P/S units!

zeropointbug · 12.16.2006, 01:21 AM

true... :005:

I can charge any battery with it, it's cheaper to me in the long run.

BrianG · 12.16.2006, 01:47 AM

I might look into something like that. Although, for people who want a charger that verifies cell count, a dedicated charger is better.

GorillaMaxx360 · 12.16.2006, 10:10 AM

how do you like those a123 do that perform better than like 3800 per say.
do they have longer run times and or more power.

zeropointbug · 12.16.2006, 12:16 PM

Yes, from my old IB3600's, they were a world of difference. They perform much better, long runtime, they hold their voltage near nominal for almost the entire runtime until they dump. The best thing I like about them is the safety, durability, and fast charging (i can charge my 5s2p pack in 25 minutes). I can run continuously all day if i wanted with the same pack. Well, 20 mins on, 25 mins off.

sleebus.jones · 12.17.2006, 01:02 PM

I'd be all over the A123's for my T4, but with the diameter being larger, they just won't fit nicely in the tray. :( I'm pretty sure they'll end up in my (yet to be built) BL Emaxx, because at least there's some room there.

Do you have any info on the size of the batteries you mentioned in the 1st post on this thread?

zeropointbug · 12.17.2006, 02:34 PM

Yah, it would have been nice if they made a prismatic cell (flat like LiPo's)

Relative to their energy density, they have a low volumetric density so they are a little more bulky...

Serum · 12.17.2006, 03:01 PM

Only two things intrigue me..

When..

Price..

zeropointbug · 12.17.2006, 04:34 PM

when... spring 2007

price.... unknown (should be relatively expensive as fresh to market, expected)

zeropointbug · 04:16 AM

And might i add that cost might be exacerbated because of no competition... :eek: :005:

These cells would be on a whole different ball game.

Serum · 12.18.2006, 02:59 AM

Sure, price is 100 percent neglegable...

We have got our rc running around at 5 mph and are in desperate need of some real juice..

zeropointbug · 12.18.2006, 04:19 AM

Do you think LiPo's are the answer? safety freaks:002: , starting on fire:mad:1 , exploding:035: ... ?!