So I got this wild idea. I want to keep a 12v lead battery charged, using my 60v ebike battery. With a 60v brush controller and throttle I would installl a blocking diode so only current could flow to the 12v battery. Then set throttle position so the controller outputs 14v. The controller is current limited.
Any reason this would not work? Stopping periodically to keep the controller from over heating is not a problem.
Though you could likely reduce current by gradually reducing throttle too.
Why not just get a dc converter? The cheap ones don't allow fine tuning the output voltage from what I've seen. And brush controllers are cheap.
Any reason this would not work? Stopping periodically to keep the controller from over heating is not a problem.
Though you could likely reduce current by gradually reducing throttle too.
Why not just get a dc converter? The cheap ones don't allow fine tuning the output voltage from what I've seen. And brush controllers are cheap.