Samsung S3 mini battery X-rays

My original Samsung battery for my S3 mini died after just one year. I’ve had good experience with cheap batteries from eBay before, but the replacement I bought this time made my phone behave rather unstable. That’s why I thought I’d take an X-ray of them to see how different they where.

Samsung i8190 original battery.
Samsung i8190 original battery.

I replaced the cheap 1500mAh battery with a slightly more expensive “gold” battery that turned out return the phone to a stable state and have acceptable battery life. Here is what they look like:

Three different batteries
Three different batteries

And a x-ray:

Samsung i8190 original battery.
Samsung i8190 original battery.

While it is impossible to say much about the quality of electronics with a simple x-ray the impression is at least the the cheapest e-bay has a simpler circuit. I don’t believe that the gold battery actually has 2450mAh, but at least it works just as good as the original.