I've been using the VC4 for more than a year. I have several other highly rated chargers but the Xtar is hands down the best one. I power it with an Anker 10 Port 60W Data Hub which is part of the system. The Data Hub charges my 20,000 uAh battery twice as fast as any other USB charging hub. Therefore it provides amble support to the Xtar. What I like about the Xtar is batteries it charges last longer. As smart chargers go it is the smartest, fastest and most versatile charger I've used. You can't go wrong with the VC4. I highly recommend the Anker 10 Port 60W Data Hub to power the Xtar. The combo is unbeatable. All my other chargers are collecting dust.

This thing does it all, charges all sizes and two types of batteries, and will even resurrect batteries you thought were beyond saving. Great information available when charging, love it, worth every penny.

You not only get a reading of the battery(ies) you're charging like every other charger. This is normally where most chargers would finish. NOT WITH THE XTAR VC4. That's just the beginning.... You can fully discharge your battery, have a reading of the current voltage of the battery. If that wasn't enough you get a reading of the current mAg output. This is all coupled with overcharge protection and reverse polarity protection.

If all that wasn't enough, you can use this charger charging lithium ion and Ni-Mh batteries in everey size from AAAA to D and the full lithium ion battery variety . Boy oh boy, that's a lot of charger for budget priced item. I'd recommend this charger to all.

I purchased this item because they said it could charge just about anything. It was replacing one that only did the A-sizes, and then it would actually pick which ones is would charge and how many at a time. Put in four, it would do two and only two--not one, but two. Some times I had to move them from side to side to get to even turn on. Pain in the AAA, AA"s. As soon as I got this new one, I plugged it in and loaded it up. Lights came on and started flashing, the numbers started going up. I didn't know what anything of that meant except it was WORKING and doing FOUR AT A TIME! I did all of the AA and AAA"s I had, and then started on an OLD jar of rechargeable D's. The + end would not stay down, so I ran a piece of blue painter's tape across them and that worked. Three of the four made it through the cycle, but that last one would not turn GREEN. I pulled it and my hand held tester said it was almost fully charged. I dropped them all in my 25-year old 4-D cell MagLite and turned it one and shined it up the dark stairwell--WIMPPPPY! I then tried new four new D-cell copper tops and that seemed wimpy too. Next I tried the MagLite LED SOLITAIRE I had in my pocket. Now that was Bright!. ALL of the OLD C and D cell batteries went into the trash and the D-cell MagLite went into the Goodwill box behind the couch. It was time for a new LED "Flasher Blaster". I love my 1,000 Lumen LED "Flasher Blaster". I have run a black bear out of our camp while we were cooking dinner in the dark using the STROBE mode. That impressed everybody. Recently, I was putting the garbage out late. A car camp down the boulevard and turn on our street going the other direction. When it was about 50-feet from the STOP sign at the intersection, I hit the strobe button and aimed it at the sign. It started flashing so BRIGHT that the car slammed on its brakes 59-feet short of the sign. Whoops. I better disappear. I love this charger. I did read the directions after I had tried to charge everything in the house. This thing is going to put the "copper top" battery company out business.

Fits all the cells as described, has versatile power options, and a bright display that's visible at many angles. AA and AAA fit without fighting like on my Nitecore i4.

If considering this one, I would look at the upgrade VC4S to get a display that shows all information for each bay, this one you need to press a button to switch if you have more than two cells charging. Not a deal breaker but annoying enough to mention. No grading feature. Does NOT have correct charging voltage for LiFePO4 cells.