One can make, depending on your mood of cheap batteries 100-150 photos without flash. That is far too little for a fully fledged replacement batteries. As emergency battery can be there but for the price still buy.
Great weakness of low batteries is the charge indicator of the battery. After 10 pictures, it is sometimes empty, it indicates again that it is full, then empty again and so on.
The fit could be better. One must reprints in the digicam When inserting the battery, and the closure of the digicam is live.
In the original battery has not the problem!
Have bought a total of 3 batteries and showing all the same weaknesses.
For the price you can not expect easy.