The LIPOnano is just the thing i was looking for: small, handy and nice build. the recharching takes about 2H and it indicates by the LED controll light (green) (also in charching mode you have a red LED light)
This is definitely a quality product and the seller (Florian) was very responsive and helpful when I had difficulties. Unfortunately, due to my own foolishness when preparing the LIPOnano for use with a battery back, I touched the positive wire to the negative battery terminal, and negative to positive, and without reverse polarity protection, that meant the death of my LIPOnano. Florian has now updated the product description to warn of this scenario, which is very responsible on his part. As long as you know what you're doing, I would recommend this device and the seller without hesitation.