Friday, October 1, 2010

Re: [Electric Boats] Re: battery bank upgrade

I wrote an ebook on converting a generator to trifuel
(gasoline/propane/methane) operation. Drop me a line if interested.

Steve Spence
Renewable energy and self sufficiency
http://www.green-trust.org
http://arduinotronics.blogspot.com/

On 10/01/2010 12:03 PM, Capt. Mike wrote:
>
>
> Aaron;
>
> A consideration to take into account before conversion is fuel
> availability. From my experiemce gasoline is probably the most available
> and easily transportable fuel to use. For a cruising electric boat it
> probably makes tjhe most sense today. But, a multifuel generator would
> be a nice thing to have too.
>
> Sent from on board BIANKA
> http://biankablog.blogspot.com
>
> ------------------------------------------------------------------------
> *From: * Aaron Williams <akenai@yahoo.com>
> *Sender: * electricboats@yahoogroups.com
> *Date: *Sun, 26 Sep 2010 17:45:28 -0700 (PDT)
> *To: *<electricboats@yahoogroups.com>
> *ReplyTo: * electricboats@yahoogroups.com
> *Subject: *Re: [Electric Boats] Re: battery bank upgrade
>
>
>
> Steve
> Any idea what the run time and cost difference of running propane rather
> than Gasoline? I wonder if you could run hydrogen as well.
> Aaron
>
> ------------------------------------------------------------------------
> *From:* Steve Spence <steve@green-trust.org>
> *To:* electricboats@yahoogroups.com
> *Sent:* Fri, September 24, 2010 3:10:53 PM
> *Subject:* Re: [Electric Boats] Re: battery bank upgrade
>
> I run my honda on propane. cleans up the fumes.
>
> Steve Spence
> Renewable energy and self sufficiency
> http://www.green-trust.org
> http://arduinotronics.blogspot.com/
>
>
>
> On 09/24/2010 07:04 PM, Samuel Shallard wrote:
>>
>>
>> Brian; was very interested to see your post.
>>
>> I currently run 4 Lifeline AGM's in series and charge with a 4 Bank Dual
>> Pro SE charger. I had wondered about using my Honda eu2000 for longer
>> cruising. I can run 4.5-5 knots pulling around 15-17 amps at 48V.
>> I had posted a few months ago to see if anyone had tried-also wrote to
>> Dual Pro but did not hear back.
>> Like you my only issue would be to set the Honda so the fumes are not a
>> nuisance. I have been contemplating adding two more batteries for range
>> but did not really want to add another 200lb in weight.
>> On Sep 24, 2010, at 12:35 PM, Brian Holt wrote:
>>
>>>
>>>
>>>
>>>
>>> Well the Elcon charger came this week and I installed it yesterday. It
>>> charges my AGM bank higher than the Dual Pro. I did test it out
>>> yesterday with my Honda 2000 generator. With my boat tied up in the
>>> slip I ran the motor while hooked up to the generator. Monitoring the
>>> paktrakr, I pulled 27 amp before the generator started bogging down.
>>> The voltage pulling at 27amp was a constant 49.2 and would
>>> occasionally climb then drop, but not below 49.2. When I shut down
>>> everything after 10min of use the voltage read 51.4 which is where I
>>> had started. I am very happy with these results as 20amp easily pushes
>>> my boat 4knts (in calm waters). This is a great set up! I rarely will
>>> use the generator, but I feel comfortable cruising longer distances
>>> now with this back up. It is also nice to have two chargers onboard.
>>> Hopefully the cost of LiFePo4 will come down to more reasonable cost
>>> in the future. Then I will already have a charger that will work for
>>> the new bank. Next project is to build a platform off the stern where
>>> I can place the generator while in use to keep the smell and sound to
>>> a minimum. I already have an idea utilizing my existing swim ladder. I
>>> will give an update when I have more experience using this set up.
>>> Thanks again for all the input!
>>> Brian
>>> --- In electricboats@yahoogroups.com
> <mailto:electricboats@yahoogroups.com>
>>> <mailto:electricboats%40yahoogroups.com>, "Eric" <ewdysar@...> wrote:
>>> >
>>> > Brian,
>>> >
>>> > You will need separate chargers for your AGMs and Lithium banks. The
>>> batteries have significantly different charging needs. Elcon chargers
>>> have different charging profiles available for the common LiFePO4
>>> battery brands on the market. Be sure to confirm that any charger that
>>> you are considering has lithium specific profiles available. I spent a
>>> couple of months trying to get a properly configured charger from
>>> Delta Q, but the factory finally said that they would not release
>>> their lithium profiles unless I had bought ALL of my storage
>>> equipment, including batteries and BMS through one of their distributors.
>>> >
>>> > But I agree with you, there is no sense in throwing away perfectly
>>> servicable equipment when you can transition slowly from one
>>> technology to the other. If I were to set up both banks, I would put
>>> contactors on both the positive and negative leads from each battery
>>> bank so that they can be completely isolated from the other and the
>>> drive system. With the chargers wired to the battery sides of the
>>> contactors, each bank can be charged independently. One bank can be
>>> "activated" to the drive , while the other is being charged. One
>>> drawback that I could see is the need for separate instrumentation to
>>> track the current in and out of each pack, if you are so inclined. But
>>> this configuration should work fairly well.
>>> >
>>> > Fair winds,
>>> > Eric
>>> >
>>> > --- In electricboats@yahoogroups.com
> <mailto:electricboats@yahoogroups.com>
>>> <mailto:electricboats%40yahoogroups.com>, "Brian Holt" <drmsudo@> wrote:
>>> > >
>>> > > Eric- thanks again. I am thinking of one add on bank of LI then I
>>> will be able to continue to use the current agm batteries I have with
>>> the charger. The future will hopefully hold a much better system. This
>>> way I continue to get the $ out of my current design and expand it
>>> with the new. Do you know about the charger that will work with my
>>> Honda 2k? Thanks.
>>> > > Brian
>>> > >
>>> >
>>>
>>
>>
>
>
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