1. General Information:
I have a
**broken link removed** that contains a DC motor (could not find much info on the type of motor it is) and 3x 12v batteries hooked up in series to produce 36v.
I took apart the handle bar that starts/stop the motor and on the switch it stated 25A max, so I assume the current in this lawn mower does not exceed 25A.
To charge this lawn mower you use an AC adapter which was included that converts the AC to DC.
Additionally, you should not charge the lawn mower with the adapter while the lawn mower is running based on the instructions manual.
2. Additional Information:
I have a separate DC 24v power system (2x 12v batteries in series), and a basic 300W AC to DC inverter. Note that this system is not connected to anything on the lawn mower.
3. What I Want To Accomplish Automatically:
I will have the lawn mower's AC adapter plugged into the inverter, and the inverter will be hooked up to the 24v system, and I will thus be charging the lawn mower when the mower is "not" running.
When I start the lawn mower, some how "automatically" the inverter will be disconnected from the 24v system, thus the AC adapter will no longer be attempting to charge to the lawn mower.
When the lawn mower is turned back off, the inverter is some how automatically connected, and the lawn mower AC adapter thus can start charging the lawn mower again.
*I would like to implement this concept with as few components as possible.
---------------------
Hopefully this is enough info, but if not, let me know and I'll do some more digging for you.
I have drawn up a small sketch that I think may be suitable for this which involves using relays, however, I'd like to hear back from some of you all first.
Thanks