Thursday, April 22, 2010

Re: [Electric Boats] Hello electric boat fans

 

In most cases, it is not just a timeout because the charger doesn't know how capacity the batteries have. However, they expect to make progress (meaning the battery voltage rises as the batteries charge). If the current is going elsewhere (the motor), the battery voltage will stay steady or even drop. The charger finally gives up believing something to be wrong.

--- In electricboats@yahoogroups.com, Jason Taylor <jt.yahoo@...> wrote:
>
> I noticed on the ProMariner website, they list how many amps can be
> delivered over the course of a number of hours.
> For example, the ProMariner ProTournament 300 Quad lists a charge rate
> of 300 amps in 10 hours.
> I don't know if that is a limitation or just an indicator of current
> flow capacity. I mean 30 A over ten hours gives 300A that can be put
> back in to a battery bank. But can it give 330A over 11 hours or will it
> "go dumb", believing there to be some battery issue...
> What if someone wants to charge an 80% depleted bank of 4 220Ah
> batteries, meaning a total of 700Amps to be put back in. Could this
> charger do it over the 23.47 hours it would take at 30A or would it
> throw a fault of some kind after 10 hours at 30A?
>
> Food for thought.
>
> /Jason
>
> acsarfkram wrote:
> > Mike,
> >
> > So you just unplugged the charger then reconnected and it started charging again? That's good to know. I would guess the "time-out" time period would be information the charger manufacturer should have. Knowing that you should be able to cycle through off/on regularly and have no interruption in power. Right?
> >
> > Mark
> >
> > --- In electricboats@yahoogroups.com, Mike <biankablog@> wrote:
> >
> >> "Another thing to consider is what happens to your charger if you use it
> >> as a power supply. For example, you run your generator to feed your
> >> charger and motor the boat under electric power without drawing down the
> >> batteries. Not all chargers can handle this type of usage. Some
> >> chargers will believe there is a battery fault if they are running at
> >> 20A all the time. They expect the "batteries" to eventually get full
> >> and they apparently never do. I think Mike from
> >> http://biankablog. blogspot. com can expand more on this from his experience."
> >> Â
> >> Â
> >> I believe Jason is right about the battery chargers "going dumb" on occassion. I was doing some extended motoring using my ZIVAN NG-1 and running it flat out with the Honda 2000 providing power. At the time I did not have a functioning current meter so I was cruising along when several hours later I began to notice that the battery bank voltage was dropping but, the Zivan charger still had a green light. So I kept moving along. When the battery bank voltage hit 48 volts I figured there was some kind of problem. I disconnected the Zivan from the Honda generator and reconnected it and the charger started to charge again (red light = bulk charge). If I had a functioning current meter I would have noticed that the battery charger had gone into a fault mode much sooner and reset of the charger earlier which would have prevented the increased draw down of the battery bank. I have since been able to repair the defective current meter
> >> http://biankablog.blogspot.com/2009/12/going-electric-repairing-zantrex-xbm.html I have also added the current probe to my Paktraker meter so I have two places to keep an eye on current draw from the battery bank. IMO it's important diagonostic tool that justifies having a backup place to read the current.
> >> Â
> >> Capt. Mike
> >> http://biankablog.blogspot.com
> >> Â
> >>
> >>
> >>
> >> --- On Wed, 4/21/10, dwolfe@ <dwolfe@> wrote:
> >>
> >>
> >> From: dwolfe@ <dwolfe@>
> >> Subject: Re: [Electric Boats] Hello electric boat fans
> >> To: electricboats@yahoogroups.com
> >> Date: Wednesday, April 21, 2010, 4:34 PM
> >>
> >>
> >> Â
> >>
> >>
> >>
> >>
> >> It would cost around $2500 for just the parts to create an electric inboard installation, batteries not included. Some engineering skill and a fair bit of labor is needed to complete the install and keep the blue smoke inside the controller;)
> >> Â If you have an outboard mount already I'd think the Torqeedo is your best option.
> >> Check with Todd at Epower marine, he is very knowledgable about Torqeedo motors.
> >> Â
> >> Denny
> >>
> >>
> >>
> >>
> >> Â
> >> Â
> >>
> >> Switch to: Text-Only, Daily Digest • Unsubscribe • Terms of Use
> >>
> >>
> >> .
> >>
> >>
> >
> >
> >
> >
>

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