Henry 5 I got these to power my Atomos Ninja V and A6500 camera. While they take a while to charge (around 9 hours I think to get them to full capacity), I was able to power the Ninja V constantly for 6 hours on one of these batteries which is fantastic! The handy USB output also came in clutch when my wireless audio receiver died and I had to give it a quick boost to finish up a shoot.The LCD has information about the input and output voltage of the battery, which is sometimes more useful to know than the actual battery level. Sometimes I have batteries that drop to 25% but then fail to power the equipment but I was able to fully drain one of these batteries and still get a good enough voltage to use all the power.They're big, they're heavy and they take ages to charge but they're the longest lasting NP-F batteries in my bag!