Re: [Electric Boats] Torqueedo 2.0, a good fit?

On Feb 19, 2014, at 12:25, Myles Twete wrote:

> Thanks Joe-
> That makes two of us using EnerDel.
> What kind of deal were you able to get these at?
> Mine will use Enerdel's RLEC battery management cards alleviating
> the need for a separate BMS.
> I'm looking at about 30kwh of energy onboard soon.
> The 23-24kwh EnerDel batteries I just picked up for $6k in the form
> of a slightly used THINK pack including the RLECs…it's hard to beat
> that.
> -Myles Twete, Portland


Hi Miles,

I paid the $586 shown on the website for six "packs", figuring it goes
to support Richard's racing efforts:
http://www.ev-wholesale.com/32-AH-Energy-Module-Kit-6-29-modules-MP320-049-HC-BO-2.htm

Unlike the EnerDels from EVolve, which were fully assembled AND with
the flex connector, these came in a box without the connector and the
need to assemble the packs myself, which is ok as I'll be building
custom "24v" and "48v" packs and including fuses at the cell on each
outgoing signal line. I had been previously using PowerLab8s for my
centralized charging schemes and preferred to continue that concept
instead of switching to a distributed BMS.

Still haven't installed the Orion BMS (on my near-term project list),
but so far (after six months of daily use in the Sparrow) the pack and
individual cell balance is amazingly close. I limit my charge/
discharge SOC range between 25% and 80% until I get the BMS operational.

You got a great deal on that THINK pack and management cards! I'm sure
you have years of life left in those.

One reason I like the EnerDel chemistry is that, unlike LiFePO4, the
voltage simply sits where you last left it with no decay. Thus,
voltage is a good way of determining SOC without having to do coulomb
counting. Also, under load, the very low ESR means there is little
voltage sag, even when sucking serious amps.

Miles, I need to catch up on your boat configuration. Any links?

As an aside, I'm looking for dc-dc converters with adjustable output
voltages and fairly wide input voltage ranges -
12vdc --> 54v,500w+/-
48v --> 350vdc, 1kW+
Anyone have any sources?

Cheers,

JoeS.


>
> From: electricboats@yahoogroups.com [mailto:electricboats@yahoogroups.com
> ] On Behalf Of Joe Siudzinski
> Sent: Wednesday, February 19, 2014 9:21 AM
> To: electricboats@yahoogroups.com
> Subject: Re: [Electric Boats] Torqueedo 2.0, a good fit?
>
> On Feb 19, 2014, at 8:08, Roger L wrote:
>
> > after trying lithium you couldn't get me to go back.
>
> I'll second that after switching to EnerDel lithium (NMC) in my Corbin
> Sparrow EV. May lead-acid (and ICE) RIP.
> http://www.enviromotors.com/wiki/index.php/Sparrow/JoeSEnerDel
> I'll be putting some EnerDels into my Telstar tri this Spring to run
> my Torqeedo 4.0R - yes, the same Torqeedo I experimented with on my
> Seawind 1000 cat before I sold the boat.
> http://www.katiekat.net/Cruise/KatieKat2011A.html#Torqeedo
>
> I recently bought a large number of EnerDel module kits from Richard
> Hatfield of Lightning Motorcycle fame, although my previous batch I
> had bought from EVolve. In addition to their performance, I like the
> EnerDel module packaging. You need to customize the number of cells to
> match the Torqeedo's needs, and don't forget a decent BMS!
> Sources:
> http://www.ev-wholesale.com/
> http://evolveelectrics.com/
>
> Joe Siudzinski
> SF Bay Area
> --
> http://www.KatieKat.net
>



------------------------------------

Yahoo Groups Links

<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/electricboats/

<*> Your email settings:
Individual Email | Traditional

<*> To change settings online go to:
http://groups.yahoo.com/group/electricboats/join
(Yahoo! ID required)

<*> To change settings via email:
electricboats-digest@yahoogroups.com
electricboats-fullfeatured@yahoogroups.com

<*> To unsubscribe from this group, send an email to:
electricboats-unsubscribe@yahoogroups.com

<*> Your use of Yahoo Groups is subject to:
http://info.yahoo.com/legal/us/yahoo/utos/terms/