Nitecore UNK1 Dual-Slot USB Travel Charger for Nikon EN-EL14, EN-EL14a, and EN-EL15 Lithium-Ion Batteries

Nitecore UNK1 Dual-Slot USB Travel Charger for Nikon EN-EL14, EN-EL14a, and EN-EL15 Lithium-Ion Batteries

Nitecore UNK1 Dual-Slot USB Travel Charger for Nikon EN-EL14, EN-EL14a, and EN-EL15 Lithium-Ion Batteries

In Stock
Order in the next 0:00:00 to ship today

Product Highlights

  • 5 VDC Input Power
  • Powered by USB/Portable Bank/Solar Panel
  • Second Slot for Backup Battery
  • Reverse Polarity Protection
  • Short-Circuit Protection
  • Battery Recovery
  • Battery Condition Monitoring
  • Smart Charging Management System
  • LCD Shows Capacity, Voltage, Charge %
  • USB Cable Supplied
Show moreShow less

B&H $500 Gift Card Dash

Share for a chance to win a $500 B&H Gift Card!

Share on Twitter

Share a favorite product for chances to win one of eight $500 B&H Gift Cards!
1 new winner announced every Monday starting Nov 5th!
Limit 1 entry per day: Come back every day to increase your chance of winning.

Be sure to mention #BHWishList when you share!

Congrats to our winners so far:

Next winner: Nov 19th

James Z. (Wk 1)

Official Rules


NO PURCHASE IS NECESSARY TO ENTER OR WIN. The B&H $500.00 Gift Card Dash (the "Sweepstakes") is void where prohibited by law and is sponsored by B&H Foto & Electronics Corp., 440 Ninth Avenue, New York, NY 10001 ("Sponsor"). It is not sponsored or endorsed by Facebook or Twitter in any way.

Entry Period/Methods of Entry. The Sweepstakes will run from on or about October 28, 2018 until on or about December 23, 2018 (the "Entry Period"). Entries received outside the Entry Period are void. Enter the Sweepstakes via either one of the following methods. (1) Share any product found on the B&H website (the "Website") on Facebook or Twitter via the dedicated links contained on the website using the hashtag #BHWishlist; or (2) Mail a postcard (postmarked during the Entry Period) containing your name, address, phone number, and email address, and indicate the subject(s), if any, about which you are interested in receiving future emails from B&H (e.g. photo, video, audio, computers, home theater, portable entertainment ) (optional) to: B&H $500.00 Gift Card Dash Sweepstakes, c/o B&H Foto & Electronics Corp., 440 Ninth Avenue, New York, NY 10001 (either option, an "Entry"). Entries must not, in the sole and absolute discretion of the Sponsor, contain obscene, provocative, defamatory, sexually explicit, or otherwise objectionable or inappropriate content. Entries deemed by Sponsor to be inappropriate will be disqualified. Entries owned by a third party, or the use of any trademarks, service marks, logos, brands, or products owned by a third party are not acceptable for entry into the Sweepstakes. Limit 1 entry per person, per day.

Winner Selection/Prizes/Odds. The B&H Social Team will randomly select a winner from among all eligible entries every Monday during the Entry Period, for a total eight (8) winners (each a "Winner"). Each Winner will receive a B&H Gift Card pre-valued in the amount of $500.00. No cash or other substitutions will be offered. Winner selection is in the sole and absolute discretion of the B&H Social Team. Any taxes are the sole responsibility of the winner. Winners will be notified and receive their prize at the email address associated with the account to which their Entry was posted or the email account provided with a mail-in entry. The odds of winning depend on the number of eligible entries received.

Identity of Winners/Eligible Participants. Winners will be identified by the email account associated with the Facebook or Twitter account from which their Entry was submitted or the email account provided with a mail-in entry. An email account holder shall mean the natural person assigned to such email account by the internet access or online service provider or other organization responsible for assigning email addresses for the domain associated with such email account. Any issues regarding the identity of a Winner shall be resolved by Sponsor in its sole discretion. The Sweepstakes is only open to residents of the United States that are at least eighteen (18) years of age on their entry date and is not open to employees of Sponsor, their immediate family, any person domiciled with such employees, or any affiliates or subsidiaries of Sponsor.

Entry Ownership/Entrant Agreements. Entrants retain full ownership and copyrights to their Submission. However, by entering the Sweepstakes entrants grant Sponsor permission to use their Entries for promotional purposes on their respective social media channels with proper credit. Entrants also agree: (a) to be bound by these Official B&H $500.00 Gift Card Dash Sweepstakes Rules; (b) that any claims related to this Sweepstakes shall be resolved individually without resort to any form of class action and that awards, shall be limited to actual out-of-pocket costs incurred in entering the Sweepstakes, and shall not include incidental or consequential damages or attorneys fees; and (c) that any actual or perceived ambiguities in these rules shall be interpreted by Sponsor in their sole discretion.

Limitation of Liability/Sponsor Modification/Cancellation Rights/ Choice of Law/ Venue/ Winners List. Sponsor is not responsible for incomplete entries or for failure to receive entries due to technical failures or human error of any kind. Winners agree that Sponsor will have no responsibility for losses or damage of any kind resulting from the acceptance, possession, or use of the prizes. Except where prohibited, participation in the Sweepstakes constitutes entrant's consent to the publication of his or her name by Sponsor in any media for commercial or promotional purposes without limitation or further compensation subject to Sponsor's respective Privacy Policies. Sponsor may modify or discontinue the Sweepstakes at any time and may disqualify from the Sweepstakes any person it determines, in its sole discretion, to have attempted to or actually tampered with or otherwise abused any aspect of the Sweepstakes. Entrants agree that in the unlikely event a dispute arises in connection with this Sweepstakes, it will be governed by the laws of the State of New York and heard exclusively in a court of applicable jurisdiction in the County and State of New York irrespective of any choice of law provisions to the contrary. To receive names of the winners by U.S. mail, please mail a self-addressed stamped envelope to: B&H Foto & Electronics Corp., Attn: B&H $500.00 Gift Card Dash Sweepstakes, 440 Ninth Avenue, New York, NY 10001. Any Winners List request must be received by B&H within one (1) year of the date the Sweepstakes is conducted.

Let us know how to reach you if you win!

Privacy 100% guaranteed; email address for contact purposes only


Already have a B&H account? Just log in tomorrow to enter again!

$0 VA Sales Tax Collected on This Item
Add to Wish List Item in Wish List

Nitecore UNK1 overview

  • 1Description

Restore power to your Nikon EN-EL14, EN-EL14a, and EN-EL15 lithium-ion batteries with this compact UNK1 Dual-Slot USB Travel Charger from Nitecore. It operates on 5 VDC input power, and features an attached USB cable that's stored in a trough to save space and prevent damage. The USB connector allows for connection to one of various user-supplied adapters, portable power banks, and solar panels. As an added convenience, the device has a second slot on the rear to accommodate a backup battery

The sophisticated UNK1 contains a smart charging management system, which monitors battery types, capacities, and initial internal resistance, then automatically applies the most appropriate charging current based on this data. The device also provides battery condition monitoring, carrying out a health inspection based on resistance at the time of installation. A cell's health bar will appear on the LCD display, which also shows capacity, voltage, and percentage of charge completed. When a battery's health has declined to the lower limit, the bar will start flashing to alert you that it should be replaced.

The UNK1 offers a mechanical reverse polarity protection mechanism that prevents charging from occurring if an incompatible or incorrectly installed battery is present. Additionally, the error message "EE" will appear on the LCD to notify you in the event that a short-circuited battery is detected. Yet another helpful feature is the battery recovery mode that restores dormant cells to active duty.

Built for durability, the UNK1 is made from polycarbonate and ABS plastics that are corrosion-resistant and fire-retardant. When this toughness is coupled with the convenient compactness and considerable versatility of the UNK1, the result is a charger that's ideal for travel, camping, and almost any other adventure in your life.

Compatible Batteries
Nikon EN-EL14, EN-EL14a, and EN-EL15 Li-ion batteries
Compatible Cameras
Nikon D600, D610, D750, D800, D800E, D810, D810A, D7000, D7100, D7200, D3100, D3200, D3300, D5100, D5200, D5300, D5500, Df, D3X
In the Box
Nitecore UNK1 Dual-Slot USB Travel Charger for Nikon EN-EL14, EN-EL14a, and EN-EL15 Lithium-Ion Batteries
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description

    Nitecore UNK1 specs

    Configuration 2x Charging slots to fit primary and backup batteries
    Input Power 5.0 VDC, 2.0 A
    Output Power Slot B1 for EN-EL15: 8.4 V, 1.0 A (max.)
    Slot B2 for EN-EL14/ EN-EL14a: 8.4 V, 1.0 A (max.)
    Connector Type Input: USB (cable attached)
    Output: Pins for batteries
    Display LCD showing capacity, voltage, charge %
    Certifications CE, ROHS, FCC, CEC, REACH, KC, C-TICK
    Dimensions 3.3 x 2.0 x 1.0" / 85 x 50 x 25 mm
    Weight 2.1 oz / 59 g
    Packaging Info
    Package Weight 0.25 lb
    Box Dimensions (LxWxH) 6.4 x 2.8 x 1.2"

    Nitecore UNK1 reviews

    UNK1 Dual-Slot USB Travel Charger for Nikon EN-EL14, EN-EL14a, and EN-EL15 Lithium-Ion Batteries is rated 3.3 out of 5 by 16.
    Rated 1 out of 5 by from Not working more than 5 sec Just received it tonight, and I hate to be the first one to review unfortunately 1 Star! when I first opened it I noticed a little unwanted solder on one of the contacts on primary side which I believe would damage the battery contacts if battery inserted (see attached photo), any way, I tried to charge an Original EN-EL14A on the secondary side, but after a few seconds of charging It started a buzz noise, although it seemed unpleasant but It continued to charge for more few seconds, then it stopped charging and turned off. I have tested it with my Laptop USB, Original phone charger and a battery bank but the results were the same. It might be because mine is a bad unit, but my guess as an electronics engineer is that voltage boost switching circuit design has a flaw!
    Date published: 2016-12-20
    Rated 1 out of 5 by from It could be a good charger I bought NITECORE UNK1 because I have a Nikon D850 using EN-EL15 and a Nikon Df using EN-EL14 batteries, this charger offering to charge both formats of my batteries seems ideal for me BUT it takes 8 hours to charge a batterie, when Nikon charger and Pearstone dual charger take LESS than ONE HOUR
    Date published: 2018-07-12
    Rated 2 out of 5 by from Needs longer cord This charger eventually does the job, but charging the Nikon batteries via USB 5 volts is V - E - R - Y - Slow.� Add to that the short cord (2-1/2") and it's just a non-starter for me.� Only thing I Iiked was the screen readout showing charge capacity and charging progress.� As a Nikon shooter, I can't wait all day for my batteries to be charged, so I'll go back to AC charging.
    Date published: 2018-04-08
    Rated 4 out of 5 by from Nikon/Nitecore Nitecore threw me for a loop! Battery says Nikon but not the charger...I've always purchased Nikon equipment over the years, didn't care about cost just quality...but if thats what goes with the Nikon battery then I guess it will work...not familiar with plugging in to computer to charge, but didn't take long...
    Date published: 2017-05-11
    Rated 4 out of 5 by from A few surprises (pleasant) Car has USB ports, so I wanted to get a mobile charger to allow for recharges on the road. I have a D5300 and a D750, which use the EN-EL14/14A and EN-EL15/15A respectively. The UNK1 will charge one of each simultaneously -- another win in my particular situation. The UNK1 is not much larger than the battery, and about half the size of the OEM Nikon charger. The single display alternately flashes the charge status of battery 1 and/or 2. An added plus is the UNK1 can be used with a USB power pack, so it is possible to carry the charger and power pack in a coat pocket, and recharge in the field. Just get a higher capacity (>10,000mAh) power pack. Most display info is straightforward, but the mAh number is a puzzle. One might assume it displays the cumulative capacity of the battery at the end of charge, but mAh returns to near zero when the voltage reading reaches 8.4V. Charger gets a ding for the connecting cable. It is captive, flat, stiff, and way too short. When stowed in the side of the charger, the cable is near invisible! Once popped out, the cable must be twisted to plug into a USB port. Best solution to minimize stress is a short USB extension cable. It would have been a better product if it had a standard, mini, or micro USB receptacle on the body. Neither concern is a deal breaker, however. Charge time is about the same as the standard Nikon charger. I will evaluate the UNK1 and will update the review if anything is noteworthy. Definitely not pro grade, but serviceable, nonetheless.
    Date published: 2017-08-15
    Rated 1 out of 5 by from Only Charges one of each type of Battery Be careful. I expected this to charge two of the same type of battery. But one side charges an EL15 and the other side charges an EL14.
    Date published: 2016-12-19
    Rated 5 out of 5 by from A merveillous small charger for Nikon Cameras the NITECORE UNK1 is a merveillous small charger to carry in your photobag, if like me you have a D810 and a Df, this charger can charge both format of batteries It can be connected to the USB port in your car or on a small AC to USB adaptor 3Amp you can find on Ebay for less than 5 $ One thing is missing an USB EXTENSION, the cable of the charger is very short and not easy to connect to the USB port of your car or on the AC to USB adaptor a 3 ' will do the job and is available in any computer store
    Date published: 2017-12-23
    Rated 5 out of 5 by from I am impressed: compact and well built Given the very attractive price tag, I didn't expect this charger to be such a good performer. Here's the nice part. It's able to put more charge in a battery than more expensive off-brand chargers. The UNK1 was able to add 400mAh of charge to "full" EN-EL14. That same battery having been deemed to be full by a much more expensive charger from Best Buy. It keeps track of the amount of charge it adds, which is only very slightly useful, but I like the feature. To put fears of charging speed aside, I can charge a nearly empty EN-EL15 in less than two hours. That's only marginally slower than the original Nikon charger. The USB port needs to be able to supply 2A of current. If it's too slow, try a different USB port. It should be almost as fast as the original charger. I like the display. It's simple, bright and informative. Unlike most other chargers, it tells you how charged the battery is. I don't have to keep wondering when the blinking light will stop blinking. Construction is very decent. The enclosure feels sturdy. There's also an internal magnet that holds the EN-El15 in place. When I bought it, I paid around $20. And this is the great part. the value for the money is excellent. Nothing else on the market comes even close.
    Date published: 2018-05-29
    • y_2018, m_11, d_8, h_15
    • bvseo_bulk, prod_bvrr, vn_bulk_2.0.8
    • cp_1, bvpage1
    • co_hasreviews, tv_0, tr_16
    • loc_en_US, sid_1297984, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
    • clientName_bhphotovideo
    Be the first to review this item
    Customer Photos

    Nitecore UNK1 Q&A

    Nitecore UNK1 accessories

    See any errors on this page? Let us know.