The situation is common, and unfortunately does not really have a
solution today.
On a heavier/bigger boat (vs eg a canoe) you cannot really get a 5 hour
range with batteries, with low budget.
You cannot save money by not buying lithium batteries.
You are buying less capacity - for less money.
A cheap chinese diesel generator is about 600€ - and will give you
plenty of range.
These are 5-6 kW units (just looked at some).
(Technically) They are not reliable for marine use (gas is less
reliable) but will probably work fine for a few years.
Rust is the main problem.
A 2-3kW sustained output will give you decent motivation.
A bigger prop will increase your results.
Delivering say 2 kW sustained for batteries requires big ($) batteries.
So, for 2x5 == 10 kwHr.
About 6000$ in lion, and similar for other techs.
Note you need about 12 kHw in lion, 18 kWhr in AVG, and 24 kWhr in
lead-acid, to actually get 10 kWhr output from them.
Pricewise all 3 are about the same, but lead-acid has 8x the mass, for
the same usable (10 kWhr/ 5 hours) output.
Comparing the 3 techs, the lion will likely last 8-10 years, the AVG
3-5, and the lead-acid 3-5.
On 05/08/2014 21:54, jj@jasonburford.com [electricboats] wrote:
>
> I am trying to put a budget together for an electric setup. Here is
> what I had in mind and would love any input or suggestions you could
> give.
>
>
> I would like a system that has a 3-5 hour range and have a small Honda
> generator as a backup for longer trips. I am on a budget and it seems
> that the AVG batteries are a good middle ground?
>
>
> I have looked at the kits from Elco (too expensive) and the one from
> Electric yachts. If there are any more affordable setups, please let
> me know!
>
> Thanks!
>
> Jason
>
--
-hanermo (cnc designs)
Posted by: Hannu Venermo <gcode.fi@gmail.com>
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