I have long wondered what battery I should buy for my Olympus PEN E-PL3. An original, a high quality of the accessory or a used original. Since I myself am involved in the development of batteries out of the question came an 8 cheap battery for me. Ansmann is a reputable brand which has many years of know-how and high-quality cells. Personally, I have 15 years ago had some Ansmann batteries that were really great. Even in my DECT phone Ansmann's inside. So my choice for the camera battery also fell to Ansmann.
After a few test runs and clean full cycles (Charging completely, completely discharged starts to camera, complete again loading ...) is the battery 1A and keeps just as long as the Olympus. How will he behave in two years to show up, I'm here but confident. Cheap China batteries are often after 6 months total in the knees and have hardly any capacity.
For me, a high-quality battery at acceptable price, I would buy it again.