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Author Topic: Lithium Ion, Polymer, or Iron?  (Read 1184 times)

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Offline z.s.tar.gzTopic starter

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Lithium Ion, Polymer, or Iron?
« on: October 17, 2009, 03:39:20 PM »
I don't know which to choose. Ion seems to be the 'standard', but polymer is more powerful. And what's the deal with Iron Phosphate ones?

Do the regulators differ for each?
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Offline Razor Concepts

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Re: Lithium Ion, Polymer, or Iron?
« Reply #1 on: October 17, 2009, 04:56:38 PM »
Iron Phosphate look to be the future of lithium, since they are not as explosive as the other types. A123 systems are currently the largest supplier, and you can get cells for fairly cheap. They are very strong in terms of surviving bad-charging and over discharging.

Offline billhowl

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Re: Lithium Ion, Polymer, or Iron?
« Reply #2 on: October 17, 2009, 08:09:32 PM »
Please read this article.
High-power lithium-ion, a new area in portable power.
http://www.buchmann.ca/Article27-Page1.asp

Offline Soeren

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Re: Lithium Ion, Polymer, or Iron?
« Reply #3 on: October 18, 2009, 07:08:48 AM »
Hi,

Please read this article.
Unfortunately, it's 3½ years old - a lifetime when talking the evolution of the Lithium basedd cells.
Regards,
Søren

A rather fast and fairly heavy robot with quite large wheels needs what? A lot of power?
Please remember...
Engineering is based on numbers - not adjectives

Offline z.s.tar.gzTopic starter

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Re: Lithium Ion, Polymer, or Iron?
« Reply #4 on: October 19, 2009, 03:59:32 PM »
I've read that iron ones need a special charging circuit that's different from the other two. And these seem to be expensive to buy.

Is that true and if so, what is a good place to look for schematics?
Save yourself the typing. Just call me Zach.

Offline Razor Concepts

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Re: Lithium Ion, Polymer, or Iron?
« Reply #5 on: October 19, 2009, 04:50:30 PM »
I've read that iron ones need a special charging circuit that's different from the other two. And these seem to be expensive to buy.

Is that true and if so, what is a good place to look for schematics?


http://hobbyking.com/hobbycity/store/uh_viewItem.asp?idProduct=7028&Product_Name=Turnigy_Accucel-6_50W_5A_Balancer/Charger

Just spend $35 to get a universal charger, you will be using it for years.

Offline z.s.tar.gzTopic starter

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Re: Lithium Ion, Polymer, or Iron?
« Reply #6 on: October 22, 2009, 05:27:59 PM »
Well you see, the problem is that I'm trying to go for a solar recharging type of thing, all built into the robot. (Yeah I know,  I know, I just want to)

So having an universal charger is really not an option (as far as the robot carrying it around) but I think I may get one anyways, because I can see it coming in handy quite often.
Save yourself the typing. Just call me Zach.

 


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