With a limited 25 year warranty solar panels provide a reliable long term solution.
If your watch needs repairing, either within the warranty or outside of the warranty, then the watch repair page of the Citizen Watch website provides all the information that you will require to arrange repair of your Citizen Watch.
On most they offer 5 years warranty and their staff members are available to help you choose the right fire extinguisher for your requirements.
Something else to keep in mind is that you'll certainly invalidate your original warranty.
Contract of sale or barter with warranty could be dissolved for fraud, provided action was taken within a limited time after the fraud had become known.