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  • LUC Blu4 Battery Charger by Efest 4 Bay

LUC Blu4 Battery Charger by Efest

  • LUC Blu4 Battery Charger by Efest 4 Bay
Out of stock

LUC Blu4 Battery Charger by Efest

This new Efest LUC series charger is really something else. First, it has one of the most unique space saving battery bay orientations I’ve ever seen. It holds 4 batteries and is smaller than some two bay chargers. The LUC Blu4 also has the ability to connect to your phone via bluetooth so you can view all of the battery info. It’s kind of like those little tomogotcha things, you can watch your battery power grow stronger and stronger in real time. My favorite thing to do is to make some hot chocolate, curl up by the fire and watch my batteries charge on my phone. The Blu4 also has a large LCD screen if you’re not into the whole technology thing. There are two charge rates on this bad boy. You can have two bays running at 1A per bay or all 4 bays running at 0.5A per bay. Efest has also installed a ton of safety features like reverse polarity protection and over discharge protection to name a few.

LUC Blu4 Battery Charger by Efest Features:

  • Unique Diagonal Space Saving Battery Orientation
  • Bluetooth Connectivity
  • App Based Charge and Specs Viewing
  • 4 Battery Slots
  • Charges 2 Batteries at 1A Per Bay
  • Charges 4 Batteries at 0.5A Per Bay
  • Individual Battery Bay Monitoring
  • Large LCD Charge Status Display
  • Tons of Safety Features
  • Piano Spring Tension Plates
  • Fire Retardant Shell

Compatible with LIMN/Li-Ion 10440/14500/14650/16340/16650/17650/17670/ 17350/18490/18500/18650/26500/26650 Batteries.

LUC Blu4 Battery Charger by Efest Package Contents:

  • (1) LUC Blu4 Battery Charger by Efest
  • (1) AC Adapter
  • Manual

Important Battery Information:


  • Never completely discharge li-ion battery (below 2.7V under load).
  • Charge fully before first use.
  • Never attach any metal moving parts |magnet| to the top-positive, or the bottom-negative battery contacts.
  • Never use force to install (insert) li-ion battery.
  • Do not use new and old battery cells together | Does not apply for one cell devices.
  • Use only high quality battery charger.
  • Do not expose to heat.
  • Do not short (connect) positive (top), and negative (bottom) battery terminals (contacts).
  • Keep battery that is not in use in plastic holder (or any insulating [plastic] container completely sealed).
  • Do not charge battery over 4.29V (another reason to use high quality battery charger).
  • Do not charge unattended.
  • Do not store your li-ion batteries fully charged (for extended period of time).
  • Store in cold and dry place at approximately 3.7V (storage charge).
  • After battery is discharged – don’t leave it discharged=>charge it as soon as possible.


  • Do not overdischarge/overcharge
  • Recharge drained batteries ASAP
  • Do not short circuit
  • Do not dispose of in fire
  • Do not expose to extreme heat or water
  • Please be familiar with handling lithium-ion batteries before purchase

The improper use or storage of any lithium ion rechargeable battery cells may pose a SERIOUS RISK of personal injury or property damage.  VAPEHAPPY accepts no responsibility or liability for any injury, damage, or defect, permanent or temporary that may be caused by the improper use of a LI-ION battery. You are responsible to have a basic knowledge of the batteries you are using and how to care for them properly.

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