The*Xtar VC2S smart charger is the smart charger. Unlike other non-smart chargers, this one recognizes what battery you put in it and will perform a charge on it for that type and size of battery inserted.

In the box, you receive the VC2S charger, the USB cable, and instructions. This charger does have a port on it for a DC 12v car charger power cord.

The info wants you to know:

Each slot charge independently and can charge different kinds of batteries at the same time
Compatible with Li-on (3.6v/4.35v), LIFPO4 (3.6v) batteries
Battery Specification:10440/14500/14650/16340/17335/17500/17670/18350/18650/20700/21700/22650/25500/26650
Compatible with Ni-MH / Ni-Cd(1.2v)
Battery Specification:A/AA / AAA / AAAA / C/SC
Compatible with DC(12v) car charging.
Can fix, repair or recharge tripped lithium batteries and slow charge depleted cells back to health, if not it will display ‘Err”

All my batteries are fairly new and I couldn’t test this, but there is another function the VC2S charger has is an activation function for over discharged Lithium batteries. When placed in charging slot VC2S, it will auto detect the battery & active it. If the battery is unable to be activated, the charger will decide the battery is damaged and the charging slot will display "Err" and stop charging. It will also display “Err” if you insert the batteries the wrong way and reverse the polarity or there is some kind of a short circuit and it will not start the charging process.

Upgraded colorful VA LCD screen tells you real-time charging status!
Each slot works independently of each other
Charger knows what battery types are inserted and charges accordingly
You can charge different types and sizes of batteries at one time
You can fix, repair Lithium batteries
Display is nice, big and easy to read with large characters
Charger is well made and can charge multiple types and size batteries at one time
Instructions are easy to read and cover all the functions of this charger

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You get it with amazing price: $21.99 on amazon.
Overall, this is a very nice smart charger and powerful that can charge quickly.