T-Pain Is On A Boat: Re: [Electric Boats] Re: Testing A Mars ME0709 Electric Motor

Tuesday, October 13, 2009

Re: [Electric Boats] Re: Testing A Mars ME0709 Electric Motor

At the end of the day after testing, my monitor said I had 43 percent
battery left. I put them all back on my four bank charger and brought
them back up. I plan on setting my throttle switch to a maximum of 50
amps, thereby avoiding discharging the batteries below 50 percent. When
I tested the motor at 91 amps at a speed of 6 knots, even for the short
period of time, the drain on the batteries was monumental.

Don Swanson

On Tue, 13 Oct 2009 22:33:25 -0000 "aweekdaysailor"
<aweekdaysailor@yahoo.com> writes:

Thx.

If I read your post right you have 4? And you were running at 45Amps?
That would only last you about 40 minutes to a 50% depth of discharge.

You mentioned in your original post some runtime values in the hours. So
that's the math that didn't add up...I'm concerned you may (as I did)
over-discharge your batteries if you trust that e-meter.

-Keith

--- In electricboats@yahoogroups.com, postal6@... wrote:
>
> They are Interstate SRM27, Megatron, Marine deep cycle, 750 mca, and
are
> a light green color. The retail price is $110.00 each. I picked up mine
> at an RV center. Here is the link to their site:
>
http://www.interstatebatteries.com/cs_estore/content/product_info/marine_
> f.asp
>
> Don
>
> On Tue, 13 Oct 2009 04:15:36 -0000 "aweekdaysailor"
> <aweekdaysailor@...> writes:
>
> Don
>
> Great that you are getting the speed you should. Do you have any more
> info on those batteries? I couldnt find them on Interstates website.
> Group 27s are usually about 100AH give or take, but if so the numbers
> don't add up.
>
> Thx
>
> -K
>
> --- In electricboats@yahoogroups.com, postal6@ wrote:
> >
> >
> >
> > By the end of six hours of tinkering and running tests the battery
> charge
> > indicated 45 percent charge, on the four wet cell batteries,
Interstate
> > MR27 megatron 600 cca., marine deep cycle.
> >
> >
>
>
>
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