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Li Pol batteries
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Nick
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The latest news on Lithium batteries:

http://www.theregister.co.uk/2005/03/29/toshiba_li-ion_battery/

Perhaps in next year's bots? Wink
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Post Wed Mar 30, 2005 11:43 am 
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Nexus
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Just noticed the nu line of Milwaukee priducts.
In particular the nu V28 line which uses LIthoim-ion batterys

Can anyon explain the difference between Li-Pol and Li-ion.

THese nu drills are 28 volts, last twice as long as previous and the motors torque is 600 inch/pounds whereas the dewalst 24volt hammer drill stalls at 192.

THey also have a battery status indicator which sounds useful.

Pitty they are so damm expensive
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Post Sun Apr 10, 2005 1:30 pm 
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original_carnage
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Smile new from the world of the Aust. Hobby Industry.

Just for Lipoly interested people... There has been a price breakthrough...
ENOUGH advertising Rolling Eyes

Just to let you know..
?2cell Lipoly, 1200mAH, 11.1V, 10C discharge, 1C charge ... only $49.95.
3cell Lipoy, 1500mAH, 11.1V, 10C discharge, 1C charge ... only $59.95.
These batteries are unlimited (don't have that draw limiting thingy like other Lipoly packs) and come without connectors.
"Swallow" charger $99.95 .... if needed.

Very Happy Love it when technology comes down in price !

Check with your local hobby shop... if they can't help, just ask me Cool
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Post Mon May 16, 2005 10:56 am 
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andrew



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hmmm, thats not too bad.

kinda cool how only 2 cells and its 11.whatever volts

may be something to look into when my nicad packs lose their life span down the track and maybe upgrade to a triton to charge them.

but the prices r cheaper than nicads although the amperage rating isnt as high as i would of liked but still something maybe worth considering down the track.

One thing ive seen is that if not done right these packs r VERY dangerous as i have heard horror stories of a pack bursting into flames while inside a rc helicopter and nearly toasting this guys garage and destroying a good amount of stuff and leaving a veyr melted helicopter.
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Post Mon May 16, 2005 12:37 pm 
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Nick
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The 2 cell / 11.1 volt pack must be a typo; each cell puts out a bit under 4 volts and that can't be changed. Also notice that the 3 cell pack is 11.1 V as well (which is correct for a 3 cell pack). Still good value and it makes a high performance antweight more economical. Cool

If we ever started seeing lipoly powered ants with brushless motors and decent KE weapons, I would be interested...
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Post Mon May 16, 2005 1:34 pm 
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andrew



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yeah i was thinking that for a beetleweight battery and stuff although unless servo boards can be used as speed controlls i wont be able to build anything in wieght limit anytime soon.
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Post Mon May 16, 2005 3:36 pm 
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original_carnage
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oops... yes it is a 3cell 1200mAh pack.

I found 2000mAh and 4000mAh packs today as well. The 2000 and 4000 packs are 'military grade'..... whatever that means.
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Post Tue May 17, 2005 3:34 pm 
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andrew



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could u get some prices please if possible

man i wish i had yoru job, hobby store would be sweeeet.
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Post Tue May 17, 2005 3:43 pm 
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Knightrous
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I was looking on the Master Instrumetns site a few weeks ago and I've seen 100amp cells and if I'm correct, there was even a 1000amp cell available. Prices unknown.

*EDIT: Just checked the site, no 1000amp cells, but I found the 100amp ones and they are only 2.75kg per cell! http://www.masterinstruments.com.au/browse/Model/SLPB80460330.html
The 40amp cells (http://www.masterinstruments.com.au/browse/Model/SLPB100216216.html)also look very nice for a featherweight. I would hate to see the price tag though Confused *
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Post Tue May 17, 2005 8:44 pm 
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Nick
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quote:
The 2000 and 4000 packs are 'military grade'..... whatever that means.


That means they come in camoflage colours and cost 10 times normal! Laughing

Seriously, where are these cells available?
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Post Tue May 17, 2005 9:25 pm 
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original_carnage
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I think these cells are available through Master Instruments, I'll check tomorrow... also chase up some prices on those other batteries...


quote:

man i wish i had yoru job, hobby store would be sweeeet.



Sometimes it's ok, it sounds a lot better than it actually is...
There is the boring retail side (stock processing, stock control, invoice processing, etc).
You see the same problems over and over, sometimes with the same customer. You tell customers the same info over and over (usually you hear - each working day... how fast does it go? how much does it cost? is that your best price? it's cheaper on the internet, blah blah blah...)
Christmas becommes a time of chaos..

But

You do get to drive RC vehicles (and get paid wages to do so) and often it comes hand in hand with sponsorship for racing, demos, etc Wink

It is a hell of a lot better than night cleaning, 12 hour shifts in an explosives factory or nightclub door security.. which is what I used to do...
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Post Wed May 18, 2005 10:04 am 
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kkeerroo
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Military grade means that it has been made more rugged. My brother used a military grade laptop in the army which was just an ordanary laptop in a new case so it wouldn't get broken if it was knocked off the bench. Actually in terms of the hardware inside a military grade laptop its about 2 years behind a laptop you'll buy down in your nearest computer shop. The army buys a laptop, spend 2 years figuring out how to stop grunts from breaking it, then put it into service only to find out its no longer good enough to handle the new software.
My guess is these Li-Pol batteries are thicker cased batteries to go into these Military Grade laptops. Grunt proof, but we'll still break them.
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Post Wed May 18, 2005 1:43 pm 
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Waddy the phoenix



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lol thats when you get a decant laptop and sandwedge it with foam on the outside with a hard cover overthat not that hard realy Very Happy but then again thats my 2 second thought on the subject
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Post Wed May 18, 2005 2:18 pm 
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Knightrous
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And a grunt lets off a .50cal round straight through the foam and you have a laptop with a 1 inch hole in the screen Smile
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Post Wed May 18, 2005 6:24 pm 
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Valen
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the milspec laptops i have seen are pretty cool
membraine keyboards, full suite of peripheral ports, sunlight readablle screen, magnesium case (so when you take that tracer round theres no doubt about it) rubber plugs in all the ports to keep the crud out, good battery life all in all a yummy package.
now if only i had the $800 second hand
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Post Wed May 18, 2005 6:57 pm 
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