Not necessarily a battery issue.
Replacing the battery is an easy task but unfortunately the battery was not the issue why it wasn't charging. Only other possibility is a faulty charging circuit on the main board. Called the service center and was quoted $150-200 for a board replacement. Quite steep considering a brand new S5 machine (old model) can be had for $400+. I will go the diy route and get a replacement board from aliexpress (approx usd65) and fix it. Rating : 4/4 Nov 10, 2020