mobile charger for Panasonic LX3 battery

Hello,

I own an old, but still good camera, Panasonic LX3. Due to it's age, I had to replace the battery by a non-original part. During the first trip after the replacement, I have noticed, that the new battery lasts for much less than original one. I've realized, that next time, I could prevent running out of energy by having a charger powered from power bank (which I always carry during treks). And here it is. The charger is foldable, to save space in my small camera bag. I'm also including