- VC4 Universal Battery Charger - LCD Display, 4 Slots for 18650 Batteries

I have been using a Powerex MH-C9000 Maha for over 10 years and it has been fine. In its day it was considered a very advanced charger. It died a few days ago and I replaced it with the Xtra VC4. Over the last couple years I would throw the batteries that the C9000 said were defective into a bag for later recycling. Turns out this charger can bring them back to life, very nice. Now I am not claiming it brings them back to like new, but many times I need batteries for a clock, or a sensor, not high demand applications. I am thrilled to bring these batteries back into "circulation". I also bought the EBL USB Wall Charger, 5V 2.1A Charger Adapter(Model: M5129) to be used with this since it only comes with a cable and no usb transformer. It seems to work fine and provides the 2.1A needed for fastest charging. I have only used this combination for a few days so cannot say anything about long term durability. I should mention that the first unit I received had one light not working and was promptly replaced by Amazon. Perhaps not ideal build quality but seems to be well designed circuitry.

Being a die hard Nitecore brand enthusiast for many decades, it great to see other companies that can compete. This XTAR VC4 surprised me when it fully charged a 18650 Battery that my prized Nitecore D4 deemed as a bad battery.. The XTAR VC4 is definitely one of the best chargers on the market in terms of price, quality, durability, craftsmanship, attention to detail, and holds it own against the tried and true more expensive brands in every test.. I highly recommend this charger especially since the USB charging cable can but used in the car as well as home, unlike my more expensive Nitecore that required an additional purchase for car charger. You can't go wrong with either, but I'm starting to think XTAR VC4 is a better product, even though the Nitecore has an over decade long spectacular track record with zero malfunctions or issues!! Thank you for supporting America and it's Armed Forces!!

The pros: - Love the detailed display and option to turn on the backlight for better visibility! It even tells you the type of battery tech charging in each slot! - LOVE the versatility! This thing charges all kinds of batteries including lithium ion! Generally speaking, if it looks like anything from aaa up to D size, this thing will charge it. It even charges my vape batteries which is huge bonus! Cons: - proprietary USB charger so if you lose the cord it becomes a paper weight. - D size batteries need to be held down. I used rubber bands and it worked well.

This is awesome! I purchased a new charger because I thought my old one wasn’t working correctly. Every-time I’d recharge my batteries, they would drain so quickly. So, I pop my batteries in to this new one and I’m shocked to find out it was my batteries. It shows you voltage and everything. The awesome part is that it revived the real over used and old ones. Also the charging is very quick. Now my old batteries seem to be working almost like new again.

Absolutely LOVE this battery charger!!!! The info is all right there. Exactly what you need, and it stays lit up looking cool as heck as long as its plugged in. You know those generic pictures of a hacker wearing a black hoodie, with a Matrix screensaver... Yeah. that guy needs one of these battery testers on his desk to look cooler....

This is a first impression review as I've only had this about 48 hours so here goes. First off, I was a bit worried about counterfeit items as I've heard that's possible but there's a label on the box with a scratch off that you can enter at xtar.cc and confirm that it is their product which is cool. I use 18650 batteries for my vape mods and also flashlights but this will also work with most all rechargeable batteries. I had about eight 18650 batteries that I had marked with a 'D' (for dead) in sharpie because my vape mod wouldn't charge them anymore. As others have said, this charger can bring batteries back to life, they are all (so far) now again completely useable! I also completely charged up some very old Panasonic enloop AA batteries. I couldn't be happier with my purchase! It feels sturdy and well made and the display is very well thought out and informative. I highly recommend this product! Xtar chargers are way past cool!

A high quality battery charger that can handle many different types and sizes of batteries. Very useful for anyone that needs to recharge single AAA or AA batteries. Most of the ones that come with those types of batteries only charge in pairs. The energy readout is also very handy. My only complaint is the charging cable. Instead of a USB-C port, it's a barrel connector. So, it could be difficult to find a replacement if the one that it comes with is lost or damaged.

I bought this because it was cheap. And I have a few flashlights with 18650 and 21700 batteries. In the little manual that came with this, it said the charger doesn't work with 21700 protected cells. It didn't say that in the Amazon listing and I don't even know if it's accurate. The next thing is it doesn't have a USB-C charging port. It uses an old school round port, and comes with a thin little cable for that. Well, the charger is advertised as 2A charging but all I could get out of it was 1A, and charging was slow. It shows how much (in mAh) the battery is taking in but the totals at the end were never close to what was marked on the batteries, even ones that have only a few cycles on them. That could be the fault of the batteries, but with two strikes against it already, I didn't trust the charger and returned it. There was a little peel off sticky plastic stuck on the corner of the charger as I received it. I assume that the sticker originally covered the port or maybe the pushbutton, and someone had tried the charger and returned it before I bought it. There are 4 slot chargers that look like this and have 3 or even 4 amp total charge capability and the amount per slot can be set individually. There are also chargers that have one slot that will do a charge > discharge > charge again and then test and report capacity. That is the charger I am looking for. I just don't want to pay $40 for it.