18650 Protected 3400mAh Li-ion Battery Rechargeable 3.7V Button Top Orbtronic (Core Cell - Japan) - For High Performance Flashlights - Free Battery case Included

Usually ships the same business day
Free Battery Case is included when batteries are bought in quantities of 2 or multiples of 2. (Example 2, 4, 6, 8, 10, etc.)

Bulk discount rates

Below are the available bulk discount rates for each individual item when you purchase a certain amount

Buy 4 - 7 and get 5% off
Buy 8 or above and get 10% off
  • 18650 Protected 3400mAh Li-ion Rechargeable Battery Orbtronic
  • 18650 Button Top Protected 3400mAh Li-ion Rechargeable Battery Orbtronic
  • 18650 Protected 3400mAh Li-ion Battery Rechargeable 3.7V Button Top  Orbtronic (Core Cell - Japan) - For High Performance Flashlights - Free Battery case Included


18650 protected battery - High performance 3400mAh | Orbtronic (Panasonic-Japan inside) Welded Advanced Protection (Seiko-Japan inside) Li-ion 3.7V rechargeable cell.

Designed for high power LED flashlights.

Unlike other protected 18650 batteries that will cut off all power at only 4 Amps, Orbtronic protected 18650 battery will provide power at currents much higher than 4 Amps, and let you use your high power flashlight without any interruption.

PROTECTED 3400mAh Panasonic 18650 Li-ion 3.7V battery by Orbtronic - Panasonic NCR18650B 3400mAh core cell is used to build these powerful Li-ion batteries.


Over-current (Activated @ 10A-12A), Over-charge (Activated @ 4.35V) - Over-discharge (Activated @ 2.5V) - Over-temp. and DUAL short circuit protection (External, and Internal).Protection circuit designed by Seiko. ICs made in Japan.

Best battery for High-Power flashlight users, or for anyone who is looking for the longest run time possible. This is one of the largest REAL capacity cells available on US market.

Very safe to operate, Orbtronic 18650 Li-ion protected battery will automatically disconnect itself from el. circuit in case of Short circuit - Extreme temperature, Abnormally high current, Over-voltage - Over-charge, Over-discharge.

Battery cell: Panasonic NCR18650B, Capacity (Ah): 3.4 Ah (3400mAh), Charging Voltage (V): 4.2 V, Energy (Wh): 12.2 Wh, Energy Density (Wh/L): 730 Wh/L, Nominal Voltage (V): 3.6V - 3.7V, Weight (g): 46 g, Diameter (mm): 18.6 mm (+/- 0.03), Length (mm): 68.9 mm (+/- 0.03) -- Top Button (Positive) made of Nickel (Ni) - Negative made of Copper (Cu) for an ideal conductivity, and durability.

UN38.3 test document available.

Button top.

Full Dual Protection.



  • Capacity (Ah): 3.4 Ah (3400mAh)
  • Energy (Wh): 12.2 Wh
  • Energy Density (Wh/L): 730 Wh/L
  • Nominal Voltage (V): 3.6V - 3.7V
  • Charging Voltage (V): 4.2 V
  • Weight (g): 46 g /1.62 oz
  • Diameter (mm): 18.6 mm (+/- 0.03)
  • Height (mm): 68.9 mm (+/- 0.03)
  • Max. Discharge rate: 2C (6.8A)
  • Pulse current (5-6 sec.): 10A
  • Chemical Composition: Li-ion (Lithium-Ion) Hybrid
  • Cell model: Panasonic NCR18650B
  • UL (Core Cell) Certificate: MH12210
  • Protection ICs: Made in Japan (Design by Seiko)
  • Core Cell: Made by Panasonic, Manufactured in Japan
  • Button Top: Yes
  • External |welded PCB | Safety Protection: Yes, Fully Protected

Electronic Protection:

  • Over-charge (Activated @ 4.33V)
  • Over-discharge (Activated @ 2.5V)
  • Over-current (Activated @ 10A-12A)
  • Overheating, and dual short circuit protection (External, and Internal).



Electronic cigarette (e-cig) users: Orbtronic Protected 18650 batteries are made for LED flashlights and not for e-cig devices. Please do not buy.



  • Never use force to install (insert) Li-ion battery.
  • Charge fully before first use.
  • Use only high-quality Li-ion battery CC/CV chargers.
  • Do not expose to heat.
  • Never charge the battery over 4.25V - It will activate safety protection (another reason to use good Li-ion battery charger).
  • Do not charge unattended.
  • Do not store your li-ion batteries fully charged (for an extended period of time-one month and more).
  • After the battery is discharged - don't leave it discharged > charge it as soon as possible.
  • Store in cold and dry place at approximately 3.6V-3.7V (Panasonic recommended storage charge).
  • Never try to charge Li-ion batteries with batt. chargers that are not made for Li-ion batteries.
  • Do not try to open, or modify this battery.
  • Do not drop on a hard surface (there are sensitive SMD components inside this battery).


All Batteries Are Sold Individually Unless Stated Otherwise. We sell only GRADE A cells (highest quality, and dependability by all manufacturing standards).


What is in the box?

  • Orbtronic 3400mAh 18650 Protected Li-ion rechargeable battery cell (Panasonic NCR18650B inside).
  • Battery case provided with each pair of batteries purchased (2 Batteries in One case)
  • Safe Li-ion packaging

Price listed is for one battery cell.

We ship very fast from Florida - USA.

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