T-Pain Is On A Boat: Re: [Electric Boats] LIFEpo4 house bank

Tuesday, July 21, 2009

Re: [Electric Boats] LIFEpo4 house bank

I found a price on ybw.com - $6000 US$. Yikes! Does anyone know of a real "street" price? Are they actually shipping batteries?

I wonder if the cost per discharge cycle is really relevant in recreational boating? Concorde Lifeline AGM has a predicted life of 500 cycles @ 80% as compared to the Mastervolts 2000 cycles BUT 500 boat rides (2 per week for 4 mths) in most peoples' summer weather would be on the order of 15 years. Seems like Murphy would conspire to kill the batteries by some other method when given 15 years to work on it ;

Opinions?

Denny Wolfe

----- Original Message -----
From: Dave Hackett
To: electricboats@yahoogroups.com
Sent: Tuesday, July 21, 2009 8:32 AM
Subject: RE: [Electric Boats] LIFEpo4 house bank

Hi Chris,

Check out Mastervolt's new LI battery.

http://www.mastervolt.com/view_product.php?lang=2&section=marine&prggr_id=10
19&prg_id=1187&pro_id=6103

They claim 3x the life span of lead. It also has all the battery management
stuff built in so it should be really simple to use.

I'm betting though, this will be a very expensive battery. Does anyone have
any experience with these yet? How about a price? With 3 times the life
span and more usable energy per charge, the higher expense may work out.

DaveH

-----Original Message-----
From: electricboats@yahoogroups.com [mailto:electricboats@yahoogroups.com]
On Behalf Of Chris Witzgall
Sent: Monday, July 20, 2009 11:55 AM
To: electricboats@yahoogroups.com
Subject: [Electric Boats] LIFEpo4 house bank

Hi all;

Does anyone on the group know enough about LIFEPO4 cells to comment on their
suitability to replace traditional house batteries on boats? The two
characteristics I am concerned about are lifespan in years, ie how long will
they last in years if properly maintained, and the ability to withstand
being partially discharged. If on a cruise, a house bank may be charged up
to 100% only occasionally. Maybe the bank is drawn slowly towards 80%
discharge over a week, and then charged up when motoring. Could they be
stored for a long time at 50%, for instance?

Chris

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