T-Pain Is On A Boat: Re: RE: RE: [Electric Boats] RE: Hello group

Sunday, November 10, 2013

Re: RE: RE: [Electric Boats] RE: Hello group

I would have to agree if you have larger current requirements.

In my case I have a 16ft boat with lower current and range requirements.
Also being used in fresh water so less corrosion issues.

Just another option, more to come as hybrids go to lithium as well.
I hear prius has larger NIMH cells, but they seem to be purchased by Taxi companies in my area.

Maybe someone will be lucky and find a good price on a wrecked Tesla some day.

Mark

From: "ewdysar@yahoo.com" <ewdysar@yahoo.com>
To: electricboats@yahoogroups.com
Sent: Sunday, November 10, 2013 7:12:10 AM
Subject: RE: RE: RE: [Electric Boats] RE: Hello group

Hi Tom,

I'm pretty sure that Myles meant $0.40/Wh, which is pretty close to your $0.418/Wh.. Like you, I paid $0.418/Wh for my Thundersky pack, including BMS, shipping and sales tax. This appears to be the current "good deal" price point for new prismatic LiFePO4 battery banks.

It's interesting to hear that "junkyard" cells from hybrids can be found for about half that price without BMS, however it appears that using those cells to build a traction bank would require a lot of connections. Given that we're dealing with marine environments, I prefer only having to connect 16 cells to reach my 50V nominal.

Fair winds,

Eric

Marina del Rey, CA

---In electricboats@yahoogroups.com, <boat_works@...> wrote:

Hi Myles,

I'm not sure what "40c/kwh" is, but if it's 40 cents/kWh, then I wish had I that deal instead of the $418/kWh (without BMS) that I paid for my 180Ah CALBs!

-Tom

---In electricboats@yahoogroups.com, <matwete@...> wrote:

"my only question on the ford escape cells is why use sanyo 5.5 ah cells when the tenergey ones are rated at 10 ah?"

Why stop there?

e.g. "why use 10ah Tenergy cells when you can use 17.5ah Enerdel cells"

Or, "why use 17.5ah Enerdel cells when you can buy a 35ah, 48v Enerdel module complete"

Or, "why use any of those cells when you can bet CALB 40ah or 100ah cells"

It's nice that we have lots of options with Lithium these days.

For about 40c/kwh (including BMS), my pack's Enerdel modules have some of the highest quality (and power) cells.

Better still, I don't have to mess with cells since the modules are already configured for 48v at the factory.

Had the deal with these modules not presented itself, I'd have likely gone with 100ah CALB cells.

But then, I don't know anything about these Tenergy or Sanyo cells.