Re: [electricboats] Electric Motor for 40ft Sailboat

Be careful with running both chargers at the same time eith packs connected. Suggest you run contactors to fully idolate batteries while they are charged

Best regards

Lee Eldridge

0427874796

On 1 Jul 2025, at 05:05, Myles Twete via groups.io <matwete=comcast.net@groups.io> wrote:



I love it!

Going this route you can keep the same pack, but split it in two.  And you can use the same charger (just need 2 of them).  In my case this part would be simple.  Adding protection also wouldn't be much of a hassle.  Definitely going to consider this later…

 

From: electricboats@groups.io [mailto:electricboats@groups.io] On Behalf Of Randy Cain via groups.io
Sent: Monday, June 30, 2025 5:05 AM
To: electricboats@groups.io
Subject: Re: [electricboats] Electric Motor for 40ft Sailboat

 

Consider going with 96v. It's not that much more complicated than 48v but gives you twice the horsepower out of the motor when you need it. Most of the time you won't need more than 5kw. A +48/-48 bipolar isolated system (fuses/breakers & contactors on both rails with the safety ground between the two 48v series-connected banks) is also a possibility.