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One person found this helpful
Long term performance is good but it's pricey for such a small battery
on 2 May 2014
I've used the original NP-50 battery for a few years in my Fuji F70exr camera.
This battery also fits many other models such as the X10, X20, F550exr and others (check your manual to confirm the battery type)
Over that time the battery has been reliable. However I have also compared running it alongside other "good" quality branded third party makers. The conclusion overall is that there isn't a lot of difference either in long term endurance or the charge they hold.
It is true there are some cheaper no name third party batteries that do perform poorly (they hold less than they state, and wear out quicker) The problem is there are plenty of quite good, third party makers offering equivalent offerings for a siginficantly lower price, and with relatively good warranty times (2 years in some cases)
With this in mind, whilst I can recommend the battery based on it being reliable and not wearing out. It's just priced too high (at around £15 I might give it 4 stars) For the current asking price you can buy anywhere between 3-5 third party equivalents for the price of just one of the Fujifilm originals. While most users will only need one spare battery the cost factor can't be ignored.
A lot of OEM makers try hard to convince people that their batteries are worth the extra cost, but this doesn't really stack up in real world use.