Pretty straighforward charger. Easy to read use display screen. I personally like the speedometer like charging display on the screen it looks nice to me. Reasonable price!

What a great charger for the money. It charges pretty much all sizes and chemistries. I like the readout display. Knowing how charged your batteries are is wonderful. I like it does not continue to charge when full. I like it displays the type of battery (Li-ion/Ni-mh....) and the amp output max is 2a for 4 batteries and the max for a single battery is 1a. I do not want to charge any faster than 1a. Outer slots are 1a max whike the center 2 are .5a so I can control the speed if I want to. When charging my NiMh AAA I use the 2 center bays which are .5a max (gets a little to hot for me at 1a) and Then if I need to I can put my 18650’s on th outside bays, so when the AAA finish the 18650’s go from .5a to 1a so I know I’m getting the fastest charge using all 4 slots. It’s great each bay separate from each other. You can always tell when they are not separate because A battery 1/2 charged will finish at the same time as a fully discharged one. I also like it is usb so I can charge in my car or hotel or wherever I take it. Just make sure your power supply is at least 2a output since a lot are only .5a. To split .5a 4x would cause charging anything take forever. I bought the one without the wall power supply because my car and all others are at least 2amp rated. the over discharge recovery feature works. It brought back 2 14500 that were over discharged. So right there it almost paid for the charger. I did not have to buy 2 replacement 14500 which would have been ~$10. I highly recommend this charger.

So far I'm quite fond of this thing. Dig the tach style display. Much better than my Luc and Nitecore chargers-smoother slides and plenty of room for 20700's. Overall I like my Opus better(for the price difference, I should like the Opus much better). IMO the VC4 is the best charger in this price range. Make sure and use 2.1 amp or higher USB adapter, I bought this without adapter and plugged it in without noticing I had a 1 amp adapter and it powered on, but, didn't charge. Probably shortened its lifespan by doing that. Learn from my mistake.

First one had a light issue but because of Lion Wholesale great customer service i will still give 5 stars. I usually use single battery Squonk mods so charge 2 battery's at a time so love the 1amp don't really need 2 amp. But biggest pro is screen and how my 20700s fit with ease probably can fit a 750 snug like the 700's fit in my LUC V6 charger lol overall great 1 amp charging and 4 .5amp if need. I've fit 4 20700's but proballly only 3 21700 but don't have any yet lol

I ordered a charger that 21700 batteries didn't really fit into too well (And that was concerning) so I emailed Liion and asked if they would return it for one that did; They responded quickly, said that wouldn't be a problem, and even recommended another charger. I was pretty impressed with their customer service so instead, I decided to keep the charger for smaller rechargeables like AA/AAAs and ordered the new recommendation. As for the VC4? I love it and I'm super happy I was recommended this charger. It has a Tachometer style mAH readout, charges well and indicates when the battery is full :)