Not quite sure what to make of this.

 

In short, The back glass of my Samsung S10 was already smashed (didn't bother to fix as covered by case), then I smashed the camera lens glass leaning against a drawer handle. So I decided to replace the back & lens together, and throw in a new battery while I had it open.

 

S10 battery is 3400mAh typical, 3300mAh rated. Original battery health estimated via an app was 2,732mAh or 83% of rated. New battery was estimated at 2154mAh in the app. Did all the tricks like running the phone untill it turns off, then repeating, charging to 100% while off, then while one etc, to ensure the phone was registering the capacity correctly...

 

Retailer was really good when I advised them that I was well short of advertised capacity, and let me swap it. Sadly the 2nd battery was reading 2070mAh. Obviously a pain pulling apart and reassembling my phone - defeating the point of upgrading while it was open...

 

New battery about 5grams lighter than the original.

 

Retail packaging looks good. Battery looked really good. Scale of printing on new batteries slightly smaller than my 2019 dated original (note I accidentally cleaned off the writing on my original pack, and the tape damage on the new pack was caused my me.

 

Retailer is a significant trade me operator, with 20.000+ feedbacks 99% positive. I brought directly through their website, not through trademe. They have a warehouse / store in an industrial area, so a reasonable scale operation.

 

 

 

Thoughts? Bad batch of genuine batteries, or a really convincing counterfeit of lower capacity?

 

 

 

Original / 2nd New / 2nd New / Original: