Top positive review
Fuji has Finally (!) Improved their Battery
Reviewed in the United States on May 31, 2020
On the BATTERY
Yes, Fuji improved their battery with the advent of the X-H1 and a few other models by giving us the now-famous "S" battery, but that was simply a variant of their existing battery, the "126" model. We now have a new battery body, slightly larger in size, reshaped, and capable of producing a great deal more of battery life than before. They did this, too, without. making the battery excessively heavy, and dare I say it, they didn't jack the price up, like they could have, to incredibly high levels. This is a much better battery the the "S" in every way: shape, power, the fact that it fits into the camera in only one direction... it finally brings Fuji up to par and probably surpassing many other mirrorless cameras in the number of shots per charge. Five stars.
Note: It is unfortunate that some people are giving this battery a single star because of the lack of inclusion of a portable battery charger with the new X-Tx. While I agree that this is outrageous and indefensible, it really isn't right to "one-star" the battery itself just because Fuji mad this (terrible) decision. We are reviewing the BATTERY here, and such comments about the missing charger belong in the X-T4 reviews (where I discuss the issue). This is a really good battery. It's just that you'll have to busy the external battery charger separately.
On the CHARGER
Having acquired the charger, I can say that it is a nice design and feels well-built. An LCD display indicates the charging level for both batteries simultaneously since you can charge two batteries at the same time. The charger is designed not to plug into A/C mains, but is a USB-C type, so you need to get both a power adapter and a USB-C cable to attach the charger to the cable. In spite of the obvious quality of the device, Fuji has messed us up twice now, first by not including the charger with the new X-T4 to begin with, but then second, to sell the charger without either a cable or a power adapter. This is an obvious own-goal to Fuji users who love their cameras and the Fuji brand so much ... why offend us with such an obvious oversite? And, if you need to charge ten dollars more to give us a cable a power adapter, then DO IT so that the user is left shaken when opening the charger and wondering if pieces are missing from a previous buyer. Its a great charger and I'm glad to have it, but Fuji has really messed up here with the way they have handled the charger portion of what can only be called the best Fuji X camera to date, the Fuji X-T4.