time2roll wrote:
Yosemite Sam1 wrote:
Housted wrote:
A word of caution here:
Most if not all solar controllers do not want solar connected without battery connection first. Be very careful when switching between batteries on the output of solar controller. You might want to add a breaker/switch to the solar input to the controller. You can then disconnect the solar panels and do your battery reconfiguration to charge the TM battery.
What could possibly happen?
Because this is my situation every time I take out my solar panels out of it's box and RV storage.
The solar panels are pre-connected to the controller, gets exposed to the sun as I set it up -- and before it gets connected to the batteries, the last step of the connection processes.
Depends on the controller. Mine very specifically says to always have a battery connected before solar power is connected.
Yes, if the controller sense the voltage of the panels first, it could set charging to the wrong voltage. It needs to sense the battery voltage so that it matches the charging or there could be problems. If your panels match battery voltage - ok. If your controller is programmed to switch after you hook up the battery - ok.
