Compatible with recent firmware updates from Sony. The battery itself is white, which makes it different from other batteries. It comes with a USB-C to USB-A charging cable, as this one can be charged via USB, unlike Sony's own batteries. This is a huge advantage if you don't bring the charger with you. You may want to buy several of these batteries so you can charge one, have another ready, and use another. This would give you the option to switch batteries throughout the day. While there is no charging indicator on the battery, there is a battery light that glows red while charging and turns green when charging, so you can be sure the battery is fully charged. When placed in the camera, it will show as 100%. Many newer FZ100 compatible third-party batteries give a warning and don't register the battery percentage with Sony's latest firmware updates, but this battery works great. I tested it with my Sony FX3 firmware version 4 and it worked similarly to a genuine Sony battery. There is no compatibility warning message. The battery went from 100% to empty. It ran for 1 hour and 35 minutes until it ran out and ran in that state for another 15 minutes to 1 hour and 50 minutes, giving you plenty of time for a battery change. Full compatibility with the latest firmware, USB charging and good runtime make these devices a great bargain.