... Hence just three points. The performance of these batteries is absolutely ok, I have to get me for my 'Panasonic Lumix' 'must', due to the Firmeineigenen guarantee commitments for the above-mentioned device. The use of other 'similar' batteries can be in case of problems, traced, which would have an adverse effect on the guarantee. A 'replica' not exisitiert because patent protection is still out.