Hi all, I have an Arizer Air I and II and for many years I have always charged the batteries in the device. I think now I would like a 18650 charger to charge the 6 batteries I have on rotation. Could some people advice which they think is best? Requirements: I'm in the UK, and Amazon is convenient and quick to order from. 2 battery capacity, I travel a lot so I like it being small. I'd like to have a digital screen, or at least some type of charge percentage. Do any have the ability to choose max charge level, so I could charge to 80% to conserve the battery. I have found these two which satisfy some of the retirements. https://www.amazon.co.uk/XTAR-Premi...=8-3&keywords=18650+battery+charger+xtar&th=1 https://www.amazon.co.uk/Nitecore-I...1244&sr=8-3&keywords=18650+battery+charger+i2 The other question I had was max charge rate. Some charge up to .5 amp and others 1 amp. What kind of charge time could I be looking at with each rate for a Panasonic NCR18650B. I'm pretty sure slower charge is better for the battery, but what do most people go for?