3600mAh 18650 Li-ion Orbtronic (Panasonic inside) 3.7V Rechargeable Battery Cell - For High Performance Flashlights - Dual Protection

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3600mAh 18650 Li-ion Orbtronic (Panasonic inside) 3.7V Rechargeable Battery Cell - For High Performance Flashlights - Dual Protection

Backordered - Contact us for restock date

Introducing the longest lasting 3600mAh 18650 Li-ion 3.7V PROTECTED Orbtronic (Panasonic core cell inside) rechargeable battery cell.

Ultra high capacity.

• PROTECTED 3600mAh 18650 Li-ion Orbtronic 3.7V rechargeable battery (Panasonic inside).

• Resettable Protection: Over-current (Activated at 7.5A-8A), Over-charge (Activated at 4.35V) - Over-discharge (Activated at 2.4V-2.5V) - el. short circuit protection. Protection electronic 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. Real capacity - The longest battery life you can find in USA today. 

• Orbtronic 18650 battery is very safe to operate. This 18650 Li-ion protected cell will automatically cut off current flow if any of the following occur: Short circuit (dead short) - Extreme temperature, Abnormally high current, Over voltage, Overcharge, Overdischarge.

• Battery cell: Panasonic, Capacity (Ah): 3.6 Ah (3600mAh), Charging Voltage (V): 4.2 V, Energy (Wh): 13 Wh, Nominal Voltage (V): 3.6V - 3.7V, Weight (g): 47 g, Diameter (mm): 18.6 mm (+/- 0.03), Length (mm): 68.9 mm (+/- 0.03) -- Button Top [Positive+] made of Nickel (Ni) - Negative terminal made of Copper (Cu) for superior conductivity, minimum resistance, and maximum durability.

• Button top.

• Protected.



• Capacity (Ah): 3.6 Ah (3600mAh)

• Energy (Wh): 13 Wh

• Nominal Voltage (V): 3.6V - 3.7V

• Charging Voltage (V): 4.2 V

• Weight (g): 47 g

• Diameter (mm): 18.6 mm (+/- 0.03mm)

• Height (mm): 68.9 mm (+/- 0.03mm)

• Max. Discharge rate: 7A

• Chemical Composition: Li-ion (Lithium-Ion)

• Protection ICs: Made in Japan (Design by Seiko)

• Bare Cell: Made by Panasonic, Made in Japan

• Button Top: Yes

• External Resettable Protection: Yes


  • Overcharge (Activated at 4.35V)
  • Overdischarge (Activated at 2.5V)
  • Overcurrent (Activated at 7A-8A)
  • Overheating, and dual short circuit protection (External, and Internal).



Important - Electronic cigarette users: Protected 18650 battery cells are larger (in diameter, and length) and are not suitable for e-cig mods. These batteries are made for high power flashlights only.

Powerful high drain 18650 battery cells (without external [PCB] electronic protection) made for high drain devices are available on Orbtronic.com, and you are welcome to place your order.



  • Never use force to install (insert) li-ion battery.
  • Use only high-quality Li-ion battery CC/CV chargers.
  • Do not expose to heat.
  • Do not charge battery over 4.3V (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 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 (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.

One of the best 18650 battery li-ion cells on the US market.

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


  • Orbtronic 18650 Protected Li-ion rechargeable battery cell (Panasonic inside)
  • Protective battery container - holder (for two 18650 cells). 
  • Safe Li-ion packaging


We ship from Florida - USA.

Contact us if you have any question.

4 Reviews Hide Reviews Show Reviews

  • 5
    3600mah Benchmark

    Posted by Scott on Oct 7th 2016

    Sure there may be one or two competitors with the new 3600mah Panasonic based cells but none are as high a quality as Orbtronic(as usual). These run longer and stronger than even Orbtronics best of the best 3400mah which is saying a LOT!

    I have 8 of these awesome cells and they run forever without breaking a sweat. I am hoping Sal gets more in soon. I check this site daily because as soon as he gets them they are gone!

  • 5
    Ultimate Orbtronic Ever!

    Posted by Roy on Jul 22nd 2016

    If you like the Orbtronic 3400mAh cells your going to love these! Serious longevity and reliability. These are the absolute best 18650 battery money can buy! For all you "AW" lovers you don't know what your talking about if you think "AW" battery's are better than Orbtronic! I've tried several hundred dollars worth of 18650 battery's of all brands and Orbtronic are flat out a better battery than all of them. The only battery that comes close is Redilast, their very good also.

  • 5
    Best Made!

    Posted by David William on Jul 14th 2016

    Both Orbtronic, and these Protected 18650, 3600mAh Li-ion batteries are the best you can find.

    I've been using Orbtronic batteries for over 3 years now, and not a single cell has failed on me.
    I use there "Protected 18650's
    They simply outlast all of the competitors.
    They hold there charge, very dependable, and Orbtronic stands behind there quality.
    I love these batteries, they all work wonderfully, in all of my high powered flashlights! Fenix, NiteCore, Olight, and other high lumen output flashlights.

  • 5
    A Year and a Half Later...

    Posted by Tino on Feb 21st 2016

    It has now been over a year and a half since I got these and wrote my last review here. All 8 cells still charge to full capacity and still outlast any other 18650 cell I have ever tried. I would say what happened to these cells but understand Orbtronic is at the mercy of the manufacturer. Panasonic/Sanyo either stopped making these cells or no longer make enough of them to spread into this market.

    It is a real shame these cells give the best run times than any other 18650 I have ever tried. Even the new 3500mah cells dont hold a candle to these cells capacity wise. So once again I will give them yet another 5 star rating they have shown zero signs of any sort of degredation.

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