Group 31 batteries

[93blklightning]

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I've been looking to do the group 31 battery swap, then I ran across this. Anybody have a clue what this is, and why it costs so much?

Is it like a mini nuclear reactor or something?

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[fsmyth]

It's an ultra-capacitor battery. They are still expensive.

 

[93blklightning]

You ain't kidding.
I guess by it being an "ultra-capacitor" battery, it will hold a higher charge for a longer period of time?

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[dunk]

Filled with unicorn blood and leprechaun tears?

 

[bbjordan]

Two of those would be worth more than the rest of my truck! Theoretically, you would never have to buy batteries again. I considered a super-capacitor battery for my motorbike, but I went with the cheaper lead acid battery. Not because it was cheaper, but because I could get it the same day.

More info:

http://www.maxwell.com/esm/

http://waste360.com/product-spotlight/using-ultracapacitors-start-your-fleet

I suppose you could always build your own...

http://www.ebay.ca/itm/NEW-Maxwell-...143240?hash=item28101ec2c8:g:D4YAAOSw3KFWb4mI

 

[fsmyth]

No. Capacity is as listed. Super-caps charge back up VERY quickly. And drain just as
quickly. Mainly used for high-current assist to more normal battery types, or for
applications that only require a high-current pulse to operate. IDI's are not in that
category, unless everything is optimal

 

[laserjock]

Yep. They work great for intermittent high current draw situations. You can get away with a much smaller battery if it is essentially just charging the cap.