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We have already reported about Dom Varney’s articles “ Powering the Fujifilm X-T3” and “ Fujifilm NP-W126S Battery Counterfeits – A Visual Guide to Spotting the Fakes“. The FX1 charger will report the correct temperature of a thermistor equipped battery, but it does not terminate charging if the battery goes outside the 0°C to 45°C allowable charging temperature range. The user needs to stop the charging process if they notice that the temperature display is approaching the 45°C charge temperature limit." The frame rate and number of frames per burst varies with shooting conditions and type of memory card used.
Japan, China : 2,412 MHz–2,472 MHz (13 channels) * Other countries : 2,412 MHz–2,462 MHz (11 channels) mm × 92.8 mm × 58.8 mm (35.4 mm excluding projections, measured at thinnest part)/5.22 in. × 3.65 in. × 2.31 in. (1.39 in.) I also used my thermal camera, Flir One for Android ( iOS version exists too), to capture batteries after a heavy load. While the original battery shows mostly evenly distributed heat on its surface, the noname battery has much higher temperature in a smaller rectangle in the middle. This might be the reason for swelling of some batteries. Self-discharging
In Europe, there are very good Patona Platinum, Patona Premium and ExPro White. All of them offer >90% capacity of the original batteries and also they don’t seem to produce significantly more heat even after some heavy use. Apparently the cheapest aftermarket batteries fail pretty bad, but fortunately many brands offer pretty solid competitors to the original batteries. They often have almost the same capacities and also heat management under a heavy load seems to be alright.
However, even with a genuinely equivalent capacity to the OEM battery, there may still be differences in power delivery rate, self-discharge rate, and ultimate rate of decline in battery’s SoH (State of Health). All the batteries lose their performance with time and usage. Their capacity decreases and the internal resistance increases. Don’t expect the very same performance from few years old batteries as you get from the new ones. Watson and Green Extreme have performance pretty much on par with the original batteries and cost roughly a third of them. They are currently available only the US. I don't think you will see any difference in the X-Pro2 because it was not designed to be take advantage of the features of the NP-W126s. For all versions of Fuji X ILCs except for the X-T2, the NP-W126 or the NP-W126s is the correct battery to use. For the X-T2, the NP-W126 will work if you don't use 4K video. This product information is fully applicable to the Fujifilm series compatible batteries, "Fujifilm battery NP-W126S".
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Personally I have a couple of Fujifilm OEM batteries, but I am also satisfied with my Patona batteries (I think they are Watson branded in North America). This battery is made of top materials of Lithiumion cells that have been safely certified by RoHS, CE, FCC and tested through repeated simulated work and commissioning before they are shipped from the factory. On the other hand, its specifications are based on the original standards such as appearance, interface type, body size, capacity, voltage, charging current and voltage, etc. Is it real Fujifilm NP-W126S compatibility information? He now also published the most comprehensive guide to Fujifilm original and third party batteries I have ever seen on the web so far. Movies: Standard output sensitivity equivalent to ISO 160 – 12800 in increments of 1/3 EV; AUTO; extended output sensitivity equivalent to ISO 25600 The battery indicators in cameras are based on actual voltage of the battery. However, since the Fuji batteries have quite a different voltage curve, compared to all the aftermarket batteries, the remaining capacity shown by the camera isn’t accurate for non-Fuji batteries. This is mostly apparent on almost empty batteries — while the camera shows that the battery is still OK, it can actually be almost empty.
My old original NP-W126 currently, after several years of usage, has roughly 1100 mAh, while it had >1200 mAh when new. Lower quality batteries can show more significant aging, the DSTE battery is already almost unusable. ConclusionThe original Fujifilm’s batteries for X system camera are expensive. That’s the reason why there are so many alternatives available, but it also makes the choice of the right one tough. They not only vary in price and capacity, but some 3rd party batteries can even swell in camera and potentially damage it. This article tries to help with the right choice due to extensive testing of capacities and heat characteristics of several available brands. NP-W126S
Auto, Custom 1, Custom 2, Custom 3, color temperature selection, direct sunlight, shade, daylight fluorescent, warm white fluorescent, cool white fluorescent, incandescent, underwaterTested Batteries Chart Explained The Perfect Battery Fujifilm NP-W126S Battery Best Third Party Battery Worst Third Party Battery Well it's nice to know I can buy one of these more expensive NP-W126S batteries and use it in my X-E2 with absolutely zero gain in performance. I'd love if they can be charged by USB or provide a USB out so i don't need to carry mobile charger and this Autofocus system: Intelligent hybrid AF (TTL contrast-detect/phase-detection AF) with AF-assist illuminator
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