OK, here is my problem: The cell phone battery was getting old (about two years) and I ordered 3 new OEM Li-Ion batteries for me and family. I fully charged the battery (overnight) and the battery lasts less than 24 hours even with little or no talk or texting. This is true for the lady's phone as well. True after 3-4 charges. Ordered another set of batteries from a different vendor, same story. Ordered a 3rd set yet from another vendor, same story. The 3rd set says 100% tested. I tried charging on the car charger and the computer USB port to no avail. Ironically, the original battery lasts 24-30 hours, and it used to last 3-4 days on standby...
Do batteries degrade over time? (if say they were produced 3 years ago and sat there?) Does the phone's charging ability diminish over time? (even if it says charge complete?) I am happy with our phones and do not want to replace them, do I have another option? Is there a way to test a battery's charge? (I do have a digital meter).