So I use an Aputure 300d, and if anyone on this forum uses this amazing light, it is hard to find an affordable battery to keep this thing powered for a decent amount of time. Enter D&O Lighting's 190Wh V-Mount Batteries! https://bit.ly/2Qm9zrw They seriously have been a life saver for me. They're the cheapest of their kind on the market, and they actually last around 80 minutes on the Aputure 300d at 100% power. I'm kind of a lighting nerd, so this is big for me. Hope someone else found this useful.