Every time some reliable source tests third-party batteries against the OEM batteries, none of the third-party batteries match the performance of the OEM battery, and while some are not too bad, some are junk. Plus, if you have a problem with your X-T3 and Fuji thinks that third-party battery caused it, you may find that they won't provide warranty coverage to fix it. I agree with most people that the OEM batteries are way overpriced but, you just spent a pile of money for that X-T3, so why worry about saving a few dollars on a battery.
