As I recall from pushing the "wayback" button, Backwoods and Real Goods
used to sell something like that in the 90s. I would only see a
pyschological benefit, based on the system size. I recall that the
charge rate was less than 50 watts, so its really not going to be worth
wiring into the system. Maybe she could do what several folks have
done: power a TV while you pedal. Anyway, here is device that might do
it: https://www.econvergence.net/
Ray Walters
Remote Solar
On 3/16/2023 3:58 PM, Larry Brown via RE-wrenches wrote:
Wrenches
I have a client that we did an off grid system for about 4 years ago
The system is performing well
The client would like to keep charged her batteries in the winter with her
stationary bicycle operating a small generator
Right now she uses a grid connection that was available and she turns on a
breaker if needed to charge the batteries in the winter through the inverter
When the batteries are fully charged she turns the breaker back off
No need for any back up other times of year
That is the only use of the grid
Her request was to be off grid
This set up eliminated the need for her to have a generator for winter low
light conditions
So far all is working as designed
But there is talk of adding a gas generator so that if the grid is down, there
is a back up available
The system has 16- AGM Concorde SunXtener Batteries configured in 2 strings of 8 batteries per string
They are PVX 3050T 6 volt batteries operating at 48VDC
They are charged from the PV Array by 2- Schneider Conext MPPT 80 600 Charge
Controllers
The system has a Schneider Conext XW+ 5548 Single Inverter
Any thoughts or ideas of what equipment can be matched with a stationary
bicycle that might give a trickle charge to the battery bank
Anyone ever played with setting this up?
She wants to try this out and see what is possible
Get some winter exercise and perhaps keep the batteries as close to full
without using the grid or a back up gas generator
All suggestions welcome
Thanks
Larry
Larry Brown
Sun Mountain
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