john gould
New Member
I am building a 3 wheeled bike that runs with on 24v assist motor and lithium lip04 batteries.
I found a controler that will take 24-35volts and convert it to the proper voltage for charging the battery, BUT.. I was tole that once I have the battery and the controler I must then scale down the solar panel to match the maximum apperage to feed the battery, or it will not take a charge due to an internal amperage feed limitations.
The problem is I only need 6 amps (due to battery size & cost) at a voltage of about 28volts to feed my controler (which has a 20amp max flow through) so I get maximum charging at all times. I want the bigest 300 watt panel I can fit on the bike. A 150 Watt (max) panel is not going to do me much good on a cloudy day so the big panel, with a limiter (of sort) when the sun is really bright is what I am after.
300watt @28 ave. volts 10.7 amps. Is there a dump controler that will only let 168 Watts pass through?
Make sense? I'm new at this stuff, but good with numbers
I found a controler that will take 24-35volts and convert it to the proper voltage for charging the battery, BUT.. I was tole that once I have the battery and the controler I must then scale down the solar panel to match the maximum apperage to feed the battery, or it will not take a charge due to an internal amperage feed limitations.
The problem is I only need 6 amps (due to battery size & cost) at a voltage of about 28volts to feed my controler (which has a 20amp max flow through) so I get maximum charging at all times. I want the bigest 300 watt panel I can fit on the bike. A 150 Watt (max) panel is not going to do me much good on a cloudy day so the big panel, with a limiter (of sort) when the sun is really bright is what I am after.
300watt @28 ave. volts 10.7 amps. Is there a dump controler that will only let 168 Watts pass through?
Make sense? I'm new at this stuff, but good with numbers