Definitely not enough information about the OP's system.
• What is the wattage of the solar panel(s)?
• What size wire gauge is used to connect the solar array to the controller and then to the batteries and how long are the wire runs?
• How big is the battery bank and what type of batteries are they?
• Is the solar charge controller PWM or MPPT?
In the absence of any amperage or wattage use information, we use the rule of thumb of 1 watt of solar for each amp/hour of battery bank. This will generally allow for the full re-charge of the batteries each day, assuming that you have a relatively sunny day. Also, battery type plays a big role in how the batteries are recharged and specifically what voltages are needed to fully charge the battery bank each day.
There are many other factors to consider in the design of a viable solar battery charging system, but this would take pages to enumerate.
More information is needed to provide any useful assistance to the OP.