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.
Painkiller Overdose: How Much Ibuprofen Is Too Much In One Day? Dec 14, 2016 01:03 PM By Elana Glowatz @ElanaGlow Over-the-counter painkillers like ibuprofen could be dangerous in high doses. Sometimes when our heads hurt, or any other body part for that matter, a couple of ibuprofens donât seem like enough. Taking too much of the over-the-counter painkiller, however, could be dangerous. There are limits to what the body can tolerate. Both Motrin and Advil â two of the most popular nonsteroidal anti-inflammatory drugs, also known as NSAIDs â come with warning labels that suggest a maximum adult dose of 1,200 milligrams per day. With 200 milligram pills, that translates to one every four hours.