Shame. I would have really liked to see you get a better charger after the best that nitecore has to offer failed on you.
Both my i2 and my i4 have their glitches.
In your case with the smaller batteries especially, the better charger would likely turn out to be more economical in the long run. They put less stress on the batteries both by offering a lower amp charge rate and by starting the charge cycle at lower amperage and ramping up slowly instead of jolting the cell as soon as it's connected.
Let alone the failure rate and lack of safety features on the nitecores.
For example... any vp charger just won't charge if you put the battery in backwards. Nitecore... probably toast.
The readout is barely a consideration when I choose a charger. I bought my nitecores because of price and high recommendations here coupled with the fact they charge AA and AAA batteries. So I still use them. But i have chargers that I can count on and that care for my batteries instead of something I plug in the wall that provides juice for my lithium cells.
Because... later on... I found the reviews and tests done on most of the chargers available by people who knew their stuff. The choice at that time was obvious. Get something good or wind up stuck one day.
So I went overboard... BUT! I have a use for every one of the 5 different chargers I own. And where I simply cannot have something fail... in my big rig... I have an xtar charger. Not only so the charger doesn't fail... but so it doesn't kill my batteries while I'm stranded on the open road.
When you get a chance, check out hkj and his charger reviews on candlepower forums and on his site. Then... if your new nitecore ever fails, do yourself a favor and get something you can rely on and don't have to babysit.
Good luck. Hope all works out for the best.
Sent from my device.