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  • Efest LUC V4 4 bay LCD USB charger

Efest LUC V4 4 bay LCD USB charger

$49.99 $39.99
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Product Description

Efest LUC 4 slot LCD charger with USB function. Now comes with car charger!

Efest LUC V4 is high quality with 4 charging channel and big LCD charger, it has four built-in independent charging channels with reverse polarity protection, short circuit protection, over-current protection and Zero voltage activation function, It can automatically monitor battery power and give an alarming notice. LUC V4 charger is compatible with most 3.7V Li-ion or LiMn batteries like 10440, 14500, 14650, 18500, 17670, 18650, 18700, 26500, 26650 etc.It can charge 15270 or 14250 batteries with spacers.
Besides, with one full charged battery in channel 2, LUC V4 charger also can charge those devices, such as mobile phone, iPad, MP3, Mp4, PSP etc. There are 2 USB sockets of DC5V/0.5A and DC5V/1A. Now comes with car charger!


1. Charging input: Pressing the rectangle button can change the charging modes(0.5A/1A/2A) and charge different size 3.6V/3.7V Li-ion batteries.

USB output: DC5V 1A USB output connector are compatible with most portable consumer electronics.

0.5A/1A can charge 4pcs : 10440/14500/14650/16340/16650/17650/17670/17350/18490/18500/18650/22650

2A can charge 2pcs : 25500 and 26650 batteries

2. Low power alarming: when discharging consumer electronics, the transparent button will be flashing in blue while the power of battery is lower than 15%, it means battery needs to be charged.

3. Built-in reverse polarity protection: While the charger is connected, each charging channel has reverse polarity protection, the charging light is still green and prevent from any short circuit.

4. Zero voltage activation function: when charger is standby, place over-discharging batteries (battery voltage is under 2V) to charging channel correctly, battery zero voltage activation starts, since battery over-discharging times, capacity and over-discharging degree is different, so the activation time will be different, and red light will turn on after battery activation.

5. Over-charging protection & automatically monitor charging: Once the external power is connected with LUC V4 charger, charger will stop charging when batteries are full; if batteries were not taken off and the battery voltage will be lower than 3.9V because of many factors, charger will charge batteries automatically again. charger will start to charging if putting lower 4.18V batteries into LUC V4 charger.

6.USB output:

Once connected to USB , Pressing the rectangle button for over 1 second,then it will get start to charging. The USB function will be closed in 30 seconds without connecting power. DC5V 1A USB output connector are compatible with most portable consumer electronics.



AC input Power

100-240V 50/60Hz

AC output Power

DC 12V 2A

DC input Power

DC 12V 2A

0.5A CC current

500mA ± 5%

1A CC current

1000mA ± 5%

2A CC current

2000mA ± 5%

Auto cut-off voltage

4.23V ± 0.05V

CV cut-off current

< 10% max current

Standby current

< 20mA

TC current (battery voltage <2.9V)


Activation current (battery voltage<2V)

10±1m A

USB output floating Voltage


USB Output floating current

< 10mA

Maximum Output current


Battery output Cut-off voltage

3.0 ± 0.05V

Auto recharge voltage

3.9 ± 0.15V

Operation Temperature


Storage Temperature




1. Once connected to an external power source, the LUC V4 charger begins to self-inspect. The gear indicator of 0.5A is red once the system has finished self-inspecting and the indicators for each channel turn yellow. It is standby for charging.

2. Charging current gear: There are 3 options, 0.5-1A-2A, for charging. It will be transformed between 0.5A, 1A and 2A by pressing the button.

0.5A charging status: 10440/14500/14650/16340/16650/17650/17670/17350/18490/18500/18650/22650,each channel independent charging.

1A charging status:

10440/14500/14650/16340/16650/17650/17670/17350/18490/18500/18650/22650,each channel independent charging.

2A charging status:

Can charge 25500/26650 batteries with only channel 2 or channel 3 .

Please choose the right charging current gear with right position as per batteries.LUC V4 starts to charge the batteries in 4 seconds after batteries are properly inserted. LCD will show the right charging status during charging , the matched channel will not be changeable once the batteries are full,and battery was stopped to be charged.

3. After full charged,please take off AC wall charger first then take off the AC connector and take out batteries.

4. After full charged battery is inserted into channel 2 and charger is connecting the electronic products,then press the button,it begins to discharge when lcd shows statues.Take off the USB cables after finished charging,charger will stop working after 30 seconds.When battery was discharging,lcd will indicator battery bars decline in the number of bars. It will alarm when battery capacity will be under 15%.

Please note batteries can not be charged if they are inserted oppositely or could not connect well.Please check batteries specification if can work with our LUC V4 charger before charging. Or it will be dangerous if they are not matched. Please use it in dry place.

Product Reviews

Write Review

  1. Super fast charger

    Posted by Terry McNeil* on 18th Oct 2016

    This charger works very fast. It features 3 different charging rates and the folks at Viper Vapor are always great. Carmen rocks!!

  2. Best Charger ever

    Posted by Unknown on 3rd Apr 2016

    Best Charger ever

  3. great on charge but slow when the battery is completly dead

    Posted by Hunter Brown on 11th Sep 2015

    i have this charger and love it but if you have a dead battery and need to go into work in the next hour it will get it close to where it needs to be but not completely their
    Order #121109

  4. Great charger

    Posted by Unknown on 28th Feb 2015

    What can I really say. Charges my batteries indescribably fast and works great. Since I can charge four batteries at one I'm never without charged batteries.

  5. Exceptional Charger

    Posted by JR 711 on 24th Jun 2014

    This is the newer version of the LUC V4 charger and it works great. It charges batteries like it's supposed to, and it has an excellent look and quality built feel.

    One feature I have not used yet but which I am excited to have is the USB charging port. That is sure to come in handy at some point.

    Some retailers are still selling the older version which has a different LCD display. The older one is not as visually appealing, and from their websites it's hard to tell which retailers are selling the new ones or not. Rest assured, just like the picture, this is the new model (2014)

  6. Smart!

    Posted by michael koczan on 24th May 2014

    Batteries can be dangerous! That is why I like a charger that gets Me out of 'The Loop' when it comes to proper settings and such. This critter does that and the indicator is clear. It is so smart! Love it!

  7. Fast Charger!!!

    Posted by Jim Ketchum on 14th May 2014

    I was surprised how fast this cjarges batteries, it will charge 4 batteries in under an hour!!! Doesn't get any better than that!!! :)

  8. this charger is a beast

    Posted by Ryan Davis on 14th May 2014

    charges my vtc5's in no time.I love the display(its not the one picture). hey vipervape get a real picture of the display

  9. works great

    Posted by adam on 26th Jan 2014

    great charger, the screen is different in the picture, what you actually get is better so thats a plus, easy to use, fast charging, little more expensive than another vender i know but i was ordering a bunch of stuff from here so it would have equaled out after the extra shipping cost so i went ahead and got it here

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