Nitecore UM4 4 Bay Digital LCD Battery Charger

18650
20700
21700

Product Highlights:

4 Bay Charger
Multiple Charging Speeds – 1.5A x 1, 1.0A x 2, 0.5A x 4 /// QC Mode – 1.5A x 1, 1.5A x 2, 0.75A x 4
Comfortably fits size 20700 and 21700 batteries
Bright digital LCD display shows real time charging information
Built in safety protections to prevent short circuits, overcharging, and improperly inserted batteries

Package Contents:

Nitecore UM4 Battery Charger
Standard USB Power Cord
User Manual

Features:

Intelligent USB 4 Slot Charger
QC 2.0 input available
Capable of charging 4 batteries simultaneously and controlling each slot independently
Up to 1,500mA charging speed in a single slot
Compatible with Li-ion and Ni-MH/Ni-Cd batteries with automatic detection
Automatic detection of battery power level and automatic selection of the appropriate voltage and charging mode (LiFePO4 and 3.8V Li-ion batteries excluded)
Automatic selection between 3 charging modes (CC, CV and dV/dt)
Energy-efficient LCD display for real-time charging information
Capable of manually selecting the charging cut-off voltage and the charging current
Automatic detection of large/small capacity batteries and automatic selection of appropriate charging current
Automatic termination upon charging completion
Reverse polarity protection and short circuit protection
Over-discharged battery activation
Li-ion battery restoration
Overtime charging protection
Made from durable and fire-retardant PC materials
Optimal heat dissipation design
Certified by RoHS, CE, FCC and CEC

Specifications:

Dimensions: 159 x 107 x 41mmInput: DC 5V/2A 9V/2A 18W (MAX)Output: 4.35V±1% / 4.2V±1% / 3.7V±1%/1.48V±1%QC Mode: 1500mA*1 (MAX), 1500mA*2 (MAX), 750mA*4(MAX)Standard Mode: 1500mA*1 (MAX), 1000mA*2 (MAX), 500mA*4 (MAX)Compatible with :
IMR/Li-ion/LiFePO4: 10440, 14500, 14650, 16500, 16340(RCR123), 16650, 17350, 17500, 17650, 17670, 17700, 18350, 18490,18500, 18650, 18700, 20700, 21700, 22500, 22650,25500, 26500, 26650, 26700Ni-MH/Ni-Cd: AA, AAA, AAAA, C, D

michael l.The18650 Battery store has to be the easiest battery supplier I’ve ever dealt with. courteous, knowledgeable, fast shipping. If there is a problem with the order, it is taken care of immediately. I now have a new battery supplier!!!KnifeMaker/Mike Armando M.Works great I didn’t even need to push any buttons just put my batteries in and it started chargingRichard E.Strong cell, good deal! What else can you say?Andrew C.Best price online for the best battery charger. Very fast shipping.Kevin B.Very cool charger.It pairs nicely with the fast charging port on my PinePower power supply.CRYSTAL A.Love this charger! Much faster than my last one! Cuts charging time in half!!ChristineL.Works perfect and super fast international shippingRichard P.Love how it works but did not know it was powered only by USB cable. Did not come with a plug adapter. Mark C.I needed a new charger for my 18650’s , so I went to thestore on my mobile phone and quickly found what I was looking for. And having ordered from your store in the past, my Information was still there, it took me about 5 minutes to find, review and order a new charger. It was shipped and on my doorstep in just 2 days! And I recieved a free gift led 18650 flashlight as a bonus … yea I was stoked. Thanks for a painless and gratifying experience. I will order from you again in the future and I have recommended you to friends and colleagues. Cameron D.I absolutely love this charger.Only wish that I’d purchased it years ago.My NITECORE UMS4 charges each battery right to 4.2V.Every time!!Shows the life of each battery and easily fits a 21700.I would recommend this charger, for sure.I know it’s a few extra bucks, but it’s worth it.Ember G.Fast charging. Nice to see the progress of the charge. Easy to use and read the screen.craig n.Batteries fit nice, easy to get out and they charge fastWayne M.Great battery chargerJeffrey B.Excellent charger.Nice improvements over older models from Nitecore.Arrived quickly and packaged very well.Great experience.Tom P.I hadn’t used any high quality smart charger in the past. This is great because it does not heat up the battery while charging.Also , all the information on the status of the charge and the health of the battery is good to know to proactively do a replacement. Michael M.Excellent charger for the price. However keep in mind it only comes with a usb cable so if you don’t have a plug in your junk drawer you will need to get 1Eric v.This thing is nice! Lots of features, easy to use. Don’t forget to use Qualcomm 2.0 for fast charge.Nathaniel M.Great 4 bay charger! Plenty of visual info and the fact it also does Ni-MH as well seals the deal. Thanks 18650batterystore!Uyana S.Works quick. Easy to read. Jeff Y.The charger charges via micro usb so it’s very slow if your charging more than one battery; not recommended. Other features are good/ok. QUERUBIN B.I was told to buy a name brand recharger. this charger is & the price is rightZeke M.very solid and good quality. I mean this is the best charger i have ever used. multi-functional very good performance and inteligent charger. thanks very much <3Stéphane L.seul point négatif, il y a pas d ac power inclue avec, il y a juste un câble usb pour le chargement.only negative point, there is no ac power included with, there is just a usb cable for chargingRobert G.Best feature of the charger is its simplicity for charging 18650 batteries.But, the manual is fairly complicated if you are not an electronics expert.I am still confused about charging a battery up to 3500 mAh when the readout shows only about 2200 at the end of the charging cycle. The helpful chat guy said it adds 2200 to what you have already, but that doesn't make sense to me.However, my doorbell is staying well charged.CharlesWorks with all my rechargeable batteriesI had a cheap charger that malfunctioned and caused my battery to overheat and melt the plastic wrapping. It really scared me. I decided I wanted to get a really good charger and good batteries. However, when I went to Amazon, I was overwhelmed and confused as to what was a good charger and good batteries. So, I went web searching for an expert online shop for battery charging. I was impressed with all the information and recommendations presented on 18650 Battery Store. I settled on the Nitecore UM4 because of the USB charging that allows me to charge with my auto jumper pack usb port during power outages. I've charged my 16850, AA, and D cells and this charger works great. It is just what I was hoping for. I feel safe with this charger.RiODiGieGreat price, fast shipping, name brands!I have placed two orders in the past year. Both times the prices were the cheapest. The shipping was incredibly fast, and they carry all the name brands and models that I was looking for. Very happy with the overall experience, in fact, I won't buy a battery charger from anyone else going forward!Bruce WinemanDigital ChargerThus far it is working well. It has a learning curve that I am still negotiating.TripsGreat ChargerFits 21700s like no other. The first one I got from amazon had issues, very temperamental detection of poor/good health from slot to slot with same batteries at the same moment, and would slow charging down on “poor” batteries that were detected as such erroneously. Manually setting the charging rate did nothing to remedy that. So I returned it to amazon, bought it here instead and now it does 100% of what it is spec’d to do. Awesome charger and I’m glad I didn’t give up on it after the first one.Chris MMy favorite charger out of 4I have had a hohm tech 4 port, the purple 2 port charger, and one other since 2016. This charger is the best because it doesn't feel like the tension is overly strong. So it's not a struggle to get the batteries in and out. The metal connects better to the batteries. I don't have to slide the batteries around to get a connection ever. Especially on rewrapped batteries. Being able to see the resistance is really nice. The only feature missing is no Mah capacity test. But that is rarely used and the resistance will tell you if the batteries are bad anyways. So this is my favorite charger.ThemetalguyUm4Works well, has good featuresKevin GalimbaGreat chargerNo problems so far. Charged up my new batteries and I like the LCD screen. Pretty colors.Anthony MaiorcaVery handyThis is a handy charger. It charges a variety of Li-ion and other batteries. Good price.david klattUM4 4 Bay Digital LCD Battery ChargerExcellent quality and works perfectlyAnthony AcevedoNitecore UM4 4 Bay Digital LCD Battery Charger :Great , quick charge , clear digital display , portable , well worth the price .Howard McCordGood productWorks as advertised. Did not come with charging block, only a usb cordMichael JacobsQuick shippingOn point quick shipping items in perfect condition.WILLIAM MalanoskiUm4Great product. Charges fast and gives all valuable information on the cells.Robert VillelaUpgrade original chargerLove the digital screen that shows how the batteries are charging !Randy SheickBattery store. Nitecore um4 LCD charger,works wEvery thing works fine . Would reconmend!!Terrill WoosleyNiceLove the read outs.Unknownsuperchargercharger works better than the ones I currently own. service was much faster then I expected. phone help was excellentJon DarceyA great chargerIt's easy to use and does a geed jobWALEED MIRZAQuick charging with information displayed on it.This charges charges batteries pretty fast. I can read all kind of information about charging on the charger. Would have been great if I could see the ETA for charging to complete as well. But still it is a great charger.UnknownSwitched from the NC new i4Got me some new, bigger batteries and the xx700s only barely fit in the other charger and I felt I risked torn wraps. This charger takes them EASILY. When the screen "dims" for energy saving, it is barely noticeable. Docked it a star for insufficient dimming and moved the unit from the bedroom to my computer desk. The battery info is nice to have. I now have a general idea of how my cells are holding up besides charging/charged.David ReisingerGreat chargerLove this charger, does a quick diagnosis before charging.Allen CampbellFast and reliableCompared to the previous two chargers we've been using, the Nitecore UM4 is quite fast charging. 1-2 hrs instead of 8-20 hrs. It also gives you a digital readout of everything you need to know about your battery. I highly recommend it. And the service was great. I received my order in only a few days.Bernard CusteauchargerWork good!!thank's!!Richard MaxwellGreat ChargerVery happy with purchase. Great charger.UnknownA+Best deals online for real chargers and batteryWilbur McGeheeNitecore UM4The UM4 is more than just a charger. It is also a limited battery analyzer. It gives the pertinent information about the battery condition.RichHNice battery chargerWorks very well with my solar system. Charges very well. Adjusts to work better with batteries as they charge. Easy to work. Simple instructions.JaceAwesomeI had their old two bay charger and loved it but decided to upgrade and found this gem and absolutely love it the display is amazing and provides tons of info and has plenty of options.