You are good, it’s for 12v. They always put out more than 12 volts and your “charge controller” regulates the voltage down to just under 14 volts which is fine, this is what a car alternator charges the car system at. Generally it regulates it to 13.7 volts input to the battery. So you need a charge controller also to regulate your charging voltage.
If this panel was for a 24 volt system it would be rated at around 36-38 volts output into the 24 volt controller.
So I should be OK connecting another 12V panel that has slightly different voltage specs?
” “charge controller” regulates the voltage down to just under 14 volts”
Does that regulation reduce the voltage by wasting the voltage excess through a resistor?
Correct. The panel give load & no load voltage and optimum operating voltage are on the panel.
I must admit, the ChiComs are known for playing around with ratings of solar panels. They way over rate the ability of the panels to produce power in watts.
Bought my first 3 panels in the early 1980’s, still have them. Only time I use them is for field day for a QRP rig. They were new surplus from Los Alamos Labs. rated at 1/2 amp at 16 volts. The size of the battery is also important.
Recently I bought a small 5V solar panel to charge my cell phone away from commercial power. It is simple and does a good job of charging my smart phone (computers and computer phones are really stupid).
I ordered some 18650 Lithium ion batteries and charger a week ago, am waiting for delivery soon. Have mixed feelings about them. They are very low leakage (charge leakage) and physically very small for the current capacity, but I am not sure how safe they are when unattended. When you see the stupid electric cars burn up it is sobering.
TF