*** T105 battery technology can store 0.3% of the energy Diesel fuel can store per unit weight.
The 0.3/100 energy ratio is based on a 62 pound fully charged T105 delivering 600Watts for 100minutes down to 1.75V/cell (1kWh of energy) If we estimate Diesel engine at 45% efficiency and electric motor at 90% efficiency the miserable 0.3% performance improves to 0.55%
The 0.3/100 energy ratio is based on a 62 pound fully charged T105 delivering 600Watts for 100minutes down to 1.75V/cell (1kWh of energy) If we estimate Diesel engine at 45% efficiency and electric motor at 90% efficiency the miserable 0.3% performance improves to 0.55%
Somebody please check the numbers above in case I screwed up somewhere. Thank you.
*** T105 battery has about five times more volume compared to pure Pb at the same weight.
The possibility of having FLA batteries getting flooded with salt water in the bilges could be a concern too. So the battery as a ballast is not so good either.
The reason we love our batteries is the Diesel engine's tank can't be refilled using sunshine :-)
Cheers
Cheers
Ahmet
From: "cpcanoesailor@yahoo.ca [electricboats]" <electricboats@yahoogroups.com>
To: electricboats@yahoogroups.com
Sent: Thursday, November 30, 2017 10:13 AM
Subject: [Electric Boats] Re: Introduction
Good comments. I'll just add that on a keel boat, you can probably replace ballast with batteries for no net weight gain. Lead is lead (or lithium).
Curtis
Curtis
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Posted by: sv8827 <sv8827@yahoo.com>
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