T-Pain Is On A Boat: Re: [Electric Boats] Lithium cheaper than lead?

Saturday, June 13, 2009

Re: [Electric Boats] Lithium cheaper than lead?

Those are not great prices, check out:
http://www.evcomponents.com/SearchResults.asp?Cat=28

For more reasonable lithium prices.

On Jun 13, 2009, at 12:20 PM, aweekdaysailor wrote:

>
>
> Search eBay for "Lithium-Ion Battery 12V 40AH".
>
> Now granted...my (230AH) bank would run $6000. "Not cheap!" you say.
> But that's with a (reported) cycle time of 2000 cycles. I will
> generously credit my existing el-cheapo Walmart deep cycles
> batteries with 300 cycles. They cost $560 (8 x 12v). Good Trojan
> T-105's should be closer to 500 cycles - but would have cost $1200
> (8 x 6v).
>
> $4800 (equivalent cycles) is still less than $6000. And BMS +
> chargers will bump it further. But - I save 300lbs in weight, can
> distribute it better, is (maybe) safer, and get probably 20% more
> range/charge (no Peukert). It's also easy to keep spare cells on
> hand in case of failure. The form-factor is intriguing - I can see
> 3.2V cells spread out against my hull in a couple of flat 48V
> strings and saving my limited storage space for more beer...
>
> We are not quite there...but so close. Being human, we tend not to
> factor in long-term costs very well - but maybe it's time.
>
> Anyone running lithium (in a boat, not a dragster) yet? I think when
> (the rest of) my Wallyworlds die in another year or 2 - it's time.
>
> -Keith
>
>
>

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