Re: [electricboats] How do I power my little launch?

Hi there Larry,

Ev-er Roland from The Netherlands here. I have bought a Duffy 18 just a month ago. It has the original 36V AGM batteries configuration(6 x 6V235ah).

I wonder how and which Lifepo4 batteries you've chosen to get 48V 360ah?

Are these batteries serial switched or are a couple of a 48V batteries used parallel?

And how did you manage the charging of these Lifepo4 batteries?, iow what BMS is used? And of course which charger have you used to charge the lifepo4 batteries?

Thanks in advance,

Roland Kruijer

---

Van: electricboats@groups.io <electricboats@groups.io> namens L Schmitz via groups.io <terminalift=yahoo.com@groups.io>
Verzonden: dinsdag 25 augustus 2020 17:03
Aan: electricboats@groups.io <electricboats@groups.io>
Onderwerp: Re: [electricboats] How do I power my little launch?

 

You will like the thunderstruck kit.  I have the 10 kw. They are very helpful with directions and advice.  I first installed 4 agm 48 v 220 ah   then upgraded to diy lifepo4  48v 360ah  Pushes my 40 ft sailboat nicely.   plenty of power and range.  Charging is easy.  The installation is very straight forward.   best regards Larry Schmitz

​Terminalift LLC

9444 Mission Park Place

Santee, CA 92071

Ph: (619) 562-0355

F: (619) 562-2060

On Tuesday, August 25, 2020, 09:43:31 AM PDT, Carsten via groups.io <carstensemail=yahoo.com@groups.io> wrote:

Hi, Dean

5 KiloWatt is overkill, unless the hull is designed for planing :-)

What is the calculated hull speed of your design ?

On Tuesday, 25 August 2020, 20:55:03 GMT+8, Dean is retired <dwilson@mcad.edu> wrote:

Hi Everybody- I'm new to this site and to electric boating, but no stranger to building things. My current project is a 14' launch, patterned after an early Rushton 32' steam launch, scaled down. I was thinking that the Thunderstruck 5KV sailboat conversion package might be nice....complete kit....plug and play, for someone who is not well versed in electric power. Is this serious overkill for my little boat? Where do I start? What other options should I be exploring?