I have a 6 year old Dell Inspiron 15 7590 that I had to change out the original battery on a bit over 12 months ago. An OEM (I assume) battery was sourced from PB Tech. About 2 months ago I noticed that the battery indicator was showing 23% on AC/being charged and wouldn't rise above that. Since then the indicated battery level had declined to 6% making it virtually unusable so into the shop it went.

After 3 days of interrogation which included working through 3 pages of suggested fixes from Dell no solution or explanation could be found and I have now replaced with a new Asus of similar spec's.

From the lengthy report from the repairer (the cost of which was waived thankfully) the battery checks as still being at new capacity but the computer is reacting as though it has declined significantly, and continues to decline. My less than expert suggestion was that the computer was 'seeing' a different battery than what was in the actual laptop, which my techy agreed with but this obviously wasn't the case. The next step would have been to replace the battery but as this wasn't sure to not happen again I didn't want to potentially throw good money after bad.

From my tech's report:

RECOMMEND REPLACEMENT OF WHOLE UNIT AS THERE IS A LOT OF
POSTS IN DELL FORUMS ABOUT THIS EXACT FAULT AND NO ONE
HAS FOUND A FIX. REPLACING THE BATTERY IS NOT RECOMMENDED
AS THE SAME THING MAY HAPPEN TO NEW BATTERY

Has anybody here been involved with this type of fault and more importantly has anybody had a successful resolution?

Due to the laptop being over 5 years old Dell aren't really interested in any assistance beyond a list of potential fix suggestions and no OE battery is now available. My questioning of the OEM status of the PB Tech supplied battery is because their supply is described as "compatible" but our repairer was assured by PB Tech that they are OEM batteries. Similarly Raytech list their replacement batteries as "Genuine Dell" but when I spoke to them they reverted to an OEM description. The data on the battery as supplied by my laptop would suggest that the battery is being 'seen' favourably by the Dell OS.