Here you get a powerful V-mount battery. You should be able to operate pretty much anything with the output voltage. Unfortunately I still have a problem with my LED lamp. But that's not because of the battery. After all, I can now operate the LED light with the battery up to 80% brightness. I need to get a different cable. We sometimes had an output power of 15.9V but my light just doesn't like it (but it's a special case). In my opinion, it can actually provide the 16.8V shown on the product photos. With USB-C and the right cable, 20V at 3.25A is achievable. Otherwise, the photo camera and video camera are all operated without any problems. The battery can be charged very easily via the various power connections. The easiest way, of course, is via USB C. But here too - you need a smart power supply and cable. Otherwise it won't load fast enough! Alternatively, there are charging plates for V-mount batteries. Here you can get the electricity you need quickly enough. The V-Mount can also be used as a power bank for mobile phones etc. But that's only on the side. It is mainly used for video cameras and there are LED lights in which you can plug your V-mount battery directly. Of course I can't say anything about the duration yet, but for this price it should still be of good quality. If something were negative, I would write this as an update in my review. The price is generally steep, but you get a powerful battery. 6700mAh cannot be dismissed out of hand and that simply costs money. The 20V with 3.25A more justify the price, which is currently around EUR 319 (12/2022). There are also a lot of connections available. Not all V-Mount batteries have that either. The LED display is of course another nice feature, but not absolutely necessary. Still very nice.