A single one of Panasonic's DMW-BLK22 batteries will cost at least twice as much as this pair of batteries and a charging case. After doing some shooting, swapping between the battery that comes with my G9ii and one of the Ilano batteries, I could not tell the difference in battery life. Some 3rd party batteries have a notably shorter battery life, so I was glad to see that these can keep up. The case is well built, charges fast (within about 2 hours) with a button that tells you how much life is in each battery pack. I will note that this pack does NOT hold power and charge while unplugged, like an external battery. You must plug this into the wall to charge. While it didn't surprise me, I can see how that might confuse people with the way the pack is designed. However, the pack hold enough juice to display battery charge, even while unplugged, which is nice.Overall, I would recommend this pack to anyone who wants a pair of batteries for their modern Lumix battery for a very reasonable price.