Brad O'Connell
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  • Ottawa, Ontario
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Significant voltage drop
2 Replies

Hi everyone,I have an electric yacht motor, driven by 8 Trojan T105 batteries, wired in series to produce 48Vdc. I have owned the system and the batteries for  7 years. I have noticed this year that…Continue

Started this discussion. Last reply by Peter McCartney on Tuesday.

 

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Brad O'Connell posted a discussion

Significant voltage drop

Hi everyone,I have an electric yacht motor, driven by 8 Trojan T105 batteries, wired in series to produce 48Vdc. I have owned the system and the batteries for  7 years. I have noticed this year that I am getting really significant voltage drops while underway.I can see the motor controller display going from 48 down to 24 Vdc, all within an hour, under what I consider to be normal cruising conditions and amp draw.I guess there may be two problems.1) A resistance problem- maybe thermally induced…See More
Monday
Brad O'Connell is now a member of Electric Seas
May 5, 2012

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Alberg 30 owner, converted to Electric Yacht Aux Propulsion in 2009.

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At 11:14pm on May 5, 2012, Greg Martin said…

Hi Brad, good choice in going electric! Alberg 30s are beautiful boats. Please tell us all about your adventures!

Anyway, I just wanted to let you know that we have forum topic under general discussions that we're using as an archive for previous messages to all members, concerning info about this site. Here's the topic:

http://www.electricseas.org/forum/topics/archive-of-messages-to-all

We'll periodically send a message with updates on what's going on. This site is always evolving, so please feel free to shape it into whatever you want.

Keep us posted,

-Greg

 
 
 

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D. Carl HArris updated their profile
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Brad O'Connell posted a discussion

Significant voltage drop

Hi everyone,I have an electric yacht motor, driven by 8 Trojan T105 batteries, wired in series to produce 48Vdc. I have owned the system and the batteries for  7 years. I have noticed this year that I am getting really significant voltage drops while underway.I can see the motor controller display going from 48 down to 24 Vdc, all within an hour, under what I consider to be normal cruising conditions and amp draw.I guess there may be two problems.1) A resistance problem- maybe thermally induced…See More
Monday
D. Carl HArris posted a discussion

Introduction

Hello,I just joined the group and am looking forward to learning about electric conversions.My wife, Myra, and I have sailed for the past 30 years and currently own a Morgan OI 28.  Spirit still has the original Volvo MD-7A, but the next time the engine requires more than oil, diesel or filters, the electric conversion will begin.  For now I will keep quiet and read all the info on the forums. Glad to be here,CarlSee More
Aug 22
D. Carl HArris is now a member of Electric Seas
Aug 22
Capt. Mike posted a discussion

Harbor test 2014

Just posted some data on the annual harbor test I do with my Thoosa 9000 EP system. Including comparison to the 2013 data:http://biankablog.blogspot.com/2014/08/electric-propulsion-harbor-test-2014.htmlCapt. Mikehttp://biankablog.blogspot.comSee More
Aug 18
Doug Greenwald posted a discussion

Introduction

Hello,I'm Doug and I just discovered this forum and its wealth of info. I've been active in the EV car world for 4 years now, and have continually watched the marine industry make its inroads with electric propulsion over the past several years. I think I'm ready to make the commitment to electric for my Nonsuch 30 "Such is Life"  currently moored in Anacortes, Wa... but soon to relocate in Everett Wa.Having her closer to home will allow this type of major retrofit to happen. The goal is to…See More
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Manuel Marinelli posted a discussion

Electric sailboat 30ft for sale

Hello everyone...After 2 years working on my S2 9.2C she is all set up and good to go and unfortunately at the same time it is the time for me to leave the US again and head back home to Europe. On the plus side for you:Manaia is for saleFor sale is a 30ft Center Cockpit sailboat in great condition with lots of special features and changes. The most recent ones are:- Electric main propulsion (10kW)- Big battery bank (225 AmpH @ 48V)- Dodger- All electric wiring redone- Windvane steering- Solar…See More
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Newish Solidnav user seeking a bit of solar help

Our Cal 2-27 came equipped with a Solidnav drive from the previous owner. Over the few months we have owned the boat I've come to really love the drive. Where I'm running into an issue is with figuring out a solar set up. I may own an all electric boat, but I am far from electric savvy.Yesterday I spoke with BlueSky about an MPPT and it wasn't a productive discussion. Our battery bank is built around four AGM batts. While I understand the drive requires 48v, what decisions does this force as…See More
Jun 25

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