Nitecore i4 + 4 x Panasonic NCR18650B (flat top), with cases

Nitecore i4 intellicharger battery charger
Nitecore i4 7
Panasonic NCR18650B 3400mAh Lithium Ion battery Marsen Energy
Panasonic NCR18650B 3400mAh Marsen Energy case

Brand: Nitecore + Panasonic

Model: i4 + NCR18650B

Product Code: i4-Panasonic-Flat

Availability: In Stock

Marsen Energy has combined a Nitecore i4 + 4 x Panasonic NCR18650B (flat top), with cases

Nitecore i4 Universal Charger


The Intellicharge i4 is a universal, automatic smart-charger compatible with almost all types of rechargeable batteries thus eliminating the need to own several chargers. The i4 is able to automatically identify Li-ion, Ni-MH and Ni-Cd rechargeable batteries and apply an appropriate charging mode (Constant Charge Current (CC), Constant Charge Voltage (CV) and Trickle Charge). Each of the i4's two micro processor-controlled charging slots is capable of monitoring and charging batteries independently. Additionally, yellow and blue power/charging status indicator lights could visibly indicate battery status and charging process. i4: The all-new highly advanced smart charger. It's as simple as insert, detect, and charge.


  • Capable of charging 4 batteries simultaneously
  • Each of the four battery slots monitors and charges independently
  • Compatible with and identifies Li-ion (26650, 22650, 18650, 17670, 18490, 17500, 18350, 16340(RCR123), 14500, 10440), Ni-MH and Ni-Cd (AA, AAA, AAAA, C) rechargeable batteries
  • 3 Color LED displays charging progress for each battery.
  • Intelligent circuitry detects the battery type and status before entering automatic charge mode
  • Automatically detects battery power status and selects the appropriate voltage and charge mode
  • Optimised charging design for IMR batteries
  • Compatible with small capacity batteries
  • Automatically stops charging when complete
  • Features over-charge prevention to protect batteries
  • Features temperature monitoring to prevent overheating
  • Made from durable ABS (fire retardant / flame resistant)
  • Features reverse polarity protection
  • Designed for optimal heat dissipation
  • Conveniently located side button allows easy selection of specific battery types and charging parameters
  • Certified by RoHS, CE, FCC and CEC

Panasonic NCR18650B (unprotected, flat top)


The Panasonic B is the most famous out of all 18650 batteries. When first released several years ago it was the highest-capacity 18650 cell mass produced and thus an essential ingredient in the rechargeable revolution and for the adoption of electric vehicles like the Model S (which has been powered by the Panasonic 18650B for some years). It is still the most requested cell for custom packs.

Panasonic NCR18650B 3400mAh datasheet


Panasonic Data sheet

Official Data sheet

Package includes:

  • 1 x Nitecore i4 Universal Charger
  • 4 x Panasonic NCR18650B 3.6v batteries
  • 2 x Battery safety cases

Nitecore i4 Universal Charger


  • Dimension : 13.8cm x 9.5cm x 3.6cm(LxWxH)
  • Input : AC 100-240V 50/60Hz 0.35A(MAX) or DC 12V 1A
  • Output Voltage : 4.2V / 1.48V
  • Output Current : 375mA x / 4 - 750mA x 2

Panasonic NCR18650B (unprotected, flat top)

Battery Specifications:

  • Model: NCR18650B
  • Positive terminal style: Flat-top
  • Protected (PCB): No
  • Manufacturer: Panasonic
  • Country of Origin: Japan
  • Chemistry: NCR
  • Max. continuous discharge current: 4.875A
  • Rated capacity (minimum): 3200 mAh
  • Nominal capacity: 3350 mAh
  • Nominal voltage: 3.6 V
  • Discharge end voltage: 2.5 V
  • Charging voltage: 4.20 +/- 0.03 V
  • Standard charging current: 1.625 A