About the (not very cheap) "Polar Cell Li-Polymer battery, 1500mAh", it stated in the product description:
- Strongest purchasable battery of these models
- Equipped with high quality cells (Sony)
- No cheap battery, but strictly controlled quality goods with CE Mark
- Our Polymer batteries are much lighter and more powerful than lithium-ion!
I had this good sounding information by the provider not to be trusted.
While the new battery works, the service life (about 1.5 days almost exclusively standby mode) is shorter than my original battery from Samsung!
This battery was unfortunately a bad buy.