Use electronics solder that contains 2% silver. One side of the cell is (+), the other (-). Cells are connected in various combinations of series and parallel, depending on the intended use--our broken panels are made to be connected with 3 or 4 panels in series to charge 12 volt batteries.
This means that extra pain  medication can harm your kidneys and/or your liver, without any  extra pain relief.    400mg of ibuprofen (2 normal tabs, or 1 extra strength tab) every  4-6 hours, and up to 1000 mg of acetaminophen (2 extra strength  tabs) are the upper recommended dose for both drugs.
The maximum amount of ibuprofen for adults is 800 milligrams per dose or 3200 mg per day (4 maximum doses). Use only the smallest amount of ibuprofen needed to get relief from your pain, swelling, or fever. Take ibuprofen with food or milk to lessen stomach upset.