That battery does include a BMS, just not in the picture. I ordered the cells separate and got a volume discount. I see they have some clearance cells around the price I paid for mine new:
Yes, they have a 48v combined charger/inverter and their batteries can be used in a 48v setup (like mine as well).
The Balqon product (even without BMS) is similarly priced to the Mastervolt batteries however ($1000 per kWh), so I don't really understand how you were able to get to $270?
--- In electricboats@yahoogroups.com, James Sizemore <james@...> wrote:
>
> I ordered my cells from Balqon. I bought 16 cells and built my bank from scratch that was before they sold them in a complete packages, if I where ordering them today I would buy four of these:
> http://www.balqon.com/store.php#!/~/product/category=3262346&id=13216609
>
> Mastervolt is a very good company I looked into there batteries systems, at the time they only had 24 volt systems. (Do they yet have a 48 volt charger/inverter?) My Electric Yacht motors needed 48 volts. They are extra pricey in the US with the current exchange rate. So they priced themselves out of my budget.
>
>
>
>
> On Mar 17, 2013, at 2:26 AM, Yme Bosma wrote:
>
> > James, I plan to install six Mastervolt Lithium batteries (30kWh total) at $32K. Furthermore 16 100W Solbianflex panels for a total $19K. Adding related components, materials and labour and you're getting close to $60K.
> >
> > If there would be a cheaper alternative (lightweight, high efficient and flexible) to the solar panels like dscussed in this thread, that would make a big difference indeed.
> >
> > So your battery pack is priced at $270 per kWh? How did you do that?
> >
> > --- In electricboats@yahoogroups.com, James Sizemore <james@> wrote:
> > >
> > > Those numbers seem a little high. My 48KW LiFePo pack only cost me $13,000 with BMS and Cables included. And I have priced my 3.1KW solar array at around $11,000. I have been buying fairly high end kit such as the Victron Quattro for my charger. (I can not say enough good things about that inverter/charger) My panels and batteries together are not over $25,000 in hardware cost.
> > >
> > > If that 60k is including labor It sound a bit better. Peoples time, now that cost coin. The thing that surprised me the most on cost more then anything else was how much just the cabling cost. Tin plated copper in not cheap.
> > >
> > > Good luck with the build.
> > >
> > >
> > > On Mar 17, 2013, at 1:24 AM, Yme Bosma wrote:
> > >
> > > > Julian, I agree that the price is currently too high. But I would assume the cost of solar panels and betteries to come down fairly quickly, currently they are about 1/3 ($60K) of the total price ($180K).
> > > >
> > > > --- In electricboats@yahoogroups.com, Julian Webb julian.proto@ wrote:
> > > > >
> > > > > Hi
> > > > >
> > > > > - The concept and design brief are great, and there's a good market for a
> > > > > canal crawler that's to these specs. I think you'll have trouble at the
> > > > > price through.
> > > > > - The European waterways are a different market, as you know there are many
> > > > > live-aboards and week-enders that are limited by rules to travel at 6 knots
> > > > > maximum.
> > > > > - As soon as I.C. engines are banned from all EU waterways this type of
> > > > > craft will be in much greater demand.
> > > > > - I had to build my own.
> > > > > - Good luck.
> > > > >
> > > > > Cheers
> > > > >
> > > > >
> > > > > On 15 March 2013 09:13, Yme Bosma mail@ wrote:
> > > > >
> > > > > > **
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > Carter, thanks for the comments.
> > > > > >
> > > > > > As for the solar roof, I do not expect to run the boat on solar only.
> > > > > > lthough it will work fine on sunny days on the many European inland
> > > > > > waterways where there is a speed limit (3-4 knots). I have a Honda portable
> > > > > > generator as a backup. And there are charging stations all over the place,
> > > > > > so with a battery range of 50 miles I should be fine.
> > > > > >
> > > > > > Are you worried about the pod not being watertight (seals)? Would a twin
> > > > > > screw setup not be less efficient compared to a single pod with a large
> > > > > > prop?
> > > > > >
> > > > > > --- In electricboats@yahoogroups.com, Carter Quillen <twowheelinguy@>
> > > > > > wrote:
> > > > > > >
> > > > > > > First thing: Awesome concept! And I like the basic design of the vessel.
> > > > > > > �
> > > > > > > But you don't have enough solar collection area. Cover every square inch
> > > > > > you can find and then some with the highest efficiency solar cells you can
> > > > > > find if you want to push that boat with solar energy. If you plan on making
> > > > > > it a diesel hybrid with a token solar panel then you're fine�but if you
> > > > > > really want to get around on the Sun, you'll need�a lot more solar panels.
> > > > > > > �
> > > > > > > Also, I'd forget the pod and go twin screw with inboard electric motors.
> > > > > > Will cost less, give you more redundancy, and perform better. That's just
> > > > > > my professional opinion.
> > > > > > > �
> > > > > > > Cool project, go for it!
> > > > > > > �
> > > > > > > Carter
> > > > > > > www.archemedesproject.blogspot.com
> > > > > > >
> > > > > > > From: Yme Bosma <mail@>
> > > > > > > To: electricboats@yahoogroups.com
> > > > > > > Sent: Wednesday, March 13, 2013 3:17 PM
> > > > > > > Subject: [Electric Boats] New member, new electric & solar powered
> > > > > > motorboat
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > After having sold our Lagoon cruising catamaran on which we just
> > > > > > finished a 1 year and 10.000 mile trip to the Caribbean, it is time for
> > > > > > something different...
> > > > > > >
> > > > > > > We are now in the process of designing and building a fully electric and
> > > > > > solar powered 33ft motorboat. Trailerable, easily maintained, minimum (air)
> > > > > > draft, comfortable, ready for all seasons, safe at sea. She will be powered
> > > > > > by a 10kW steerable pod, running on a 30kWh lithium battery pack and 2kWp
> > > > > > solar panels. We are currently finishing the design, selecting the (Dutch)
> > > > > > yard where she will be built, and finalizing the specifications with
> > > > > > several suppliers. Hull number 1 will be ours, but I'd like to see whether
> > > > > > there's a broader interest in this project, especially when prices of solar
> > > > > > panels and batteries are coming down.
> > > > > > >
> > > > > > > If you have any feedback, tips or comments, I'd love to hear them! For
> > > > > > images and more information on what we are doing, please visit
> > > > > > http://www.arviro.com/.
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > Basics
> > > > > > >
> > > > > > > * Length 9,99m / 32.8ft����
> > > > > > > * Beam 2,50m / 8.2ft����
> > > > > > > * Draft 0,75m / 2.5ft����
> > > > > > > * Air draft 1,80m / 5.9ft����
> > > > > > > * Headroom 2,00m / 6.5ft����
> > > > > > > * Weight 2700 Kg / 6000 pounds����
> > > > > > > * 10kW steerable pod����
> > > > > > > * 30kW lithium battery pack����
> > > > > > > * 1500Wp solar panels����
> > > > > > > * 1200 liter / 320 gallon water����
> > > > > > > * Built in 5mm / .2 inch aluminum����
> > > > > > > * Cruising speed: 6 knots����
> > > > > > > * Battery range: 50 nautical miles����
> > > > > > > * 100% made in Holland
> > > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > > >
> > > > >
> > > > > --
> > > > > www.proto.eu.com ltd
> > > > >
> > > > > unit 9 Somerton Industrial Estate, Belfast, BT3 9JP, U.K.
> > > > > Phone; (+44) 02895 811251 - Mobile; (+44) 07427 696 796 - Fax;
> > > > > (+44) 0871 9898296
> > > > > Company number; NI067673 VAT number; GB975375474
> > > > >
> > > >
> > > >
> > >
> >
>
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