30A-40A 18650 FLAT Top Battery 3.7V Rechargeable 3120mAh High Drain Li-ion Orbtronic

Usually ships the same business day
Minimum Purchase:
2 units
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

Out Of Stock


18650 FLAT Top Battery 30A-40A  3.7V Rechargeable 3120mAh High Drain Li-ion Orbtronic

New, and very POWERFUL    ORB-3120FT

FREE battery case included with each pair of batteries purchased.

Excellent high drain cells for applications where high current - high discharge is the most important.

This battery is recommended for advanced (experienced) battery users only, because of its ultra-high discharge characteristics and immense power it delivers.

100% proper handling/using is most important when working with these Li-ion cells. Every user must read and comply with user safety guide/warning.

Battery Specs: 

  • Capacity: 3120 mAh
  • Model /Part No.: ORB-3120FT
  • Max Discharge Current 40A 5 Sec. ON, 30 Sec. OFF
  • Max Continuous Discharge Current: 30A for temp. up to 80 degrees Celsius Cut Off
  • Nominal Voltage: 3.6V/3.7V
  • Size / Type: 18650
  • Full Charge Voltage: 4.18V - 4.2V 
  • Internal Resistance 12.5 mΩ 
  • Diameter 18.45mm max +/- 0.06mm
  • Length 65mm max +/- 0.06mm
  • Weight: 48 g Average
  • Positive terminal: Flat top 18650
  • Color: Black
  • Battery Type / Shape: 18650 / Cylindrical
  • Core Cell: Made in Japan
  • Intended use: High Drain Devices
  • Recommended charging current: 2 Amps (2000mA)
  • Electronically  Protected? - No, This is Unprotected battery cell
 Highly recommended 18650 Li-ion charger for this powerful hybrid IMR 18650 Flat Top battery is Miboxer




Failure to read, and follow Li-ion safety instructions, and warnings may result in fire, personal injury, and property damages if the battery is charged and/or used improperly.


  • DO NOT SHORT CIRCUIT. Short circuits may cause a fire and injury!
  • Charge battery fully to 4.2V before first use.
  • Use high-quality charger specifically designed to charge Li-ion batteries.
  • Do not charge unattended.
  • Always keep your battery that is not in use inside the plastic battery holder(container).
  • Do not keep a bare battery in your pocket, purse, or anywhere together with other metal (conductive) objects.
  • Never attach any metal moving part |magnet| to the top positive or the bottom negative battery contact.
  • Stop using the battery with damaged PVC tube (wrap) or terminal insulator immediately.
  • If the battery is damaged in any way stop using it immediately.
  • Never discharge a Li-ion battery at a rate exceeding the maximum discharge current specified for that battery.
  • Never use force to install (insert) Li-ion battery.
  • Do not use old, and new batteries together.
  • Do not solder directly onto the battery.
  • Do not immerse in any liquid.
  • Do not drop the battery. Always keep it in a plastic protective holder.
  • Do not place the battery in high-pressure containers, microwave ovens, or on induction cookware.
  • Immediately discontinue use of the battery if, while using, charging or storing the battery, the battery emits an unusual smell, feels hot, changes color or shape, or appears abnormal in any other way.
  • Do not carry, or store the batteries together with hairpins, necklaces, or other conductive metal objects.
  • Use only high-quality battery Li-ion charger (CC/CV 4.2V max).
  • Do not expose to heat.
  • Do not disassemble, or modify the battery.
  • Keep the battery away from children, and pets.
  • Never charge, or store the batteries inside your car in extreme temperature. Extreme temperatures (low or high) might ignite the battery, and cause a fire.
  • Do not short (connect) positive, and negative battery terminals (contacts) intentionally, or unintentionally.
  • Never charge the battery over 4.25V (properly charged li-ion battery is 4.2 Volts / full charge).
  • Do not reverse the positive (+) and negative (-) terminals when charging, or using the battery.
  • Never charge the battery at a current exceeding manufacturer-specified charging current.
  • Do not expose the battery to water or salt water, or allow the battery to get wet.
  • You must verify polarity before connecting the battery to the host device (or charger).
  • Never completely discharge the Li-ion battery ( below 2.5V under load ).
  • After the battery is discharged-don't leave it discharged-charge battery as soon as possible (10 min. rest time).
  • It is your responsibility to determine that your charger and host device works properly.
  • On (battery electrolytes) exposure to skin, flush with water immediately.
  • If eye exposure occurs, flush with water for 15 minutes, and seek emergency care immediately.

What is short circuit?

The situation when battery positive (+) and negative (-) connect. The current will become extremely high because there is no resistance in the path to limit current flow. This Short circuit will result in dangerously high temperature which may cause a fire.


The use of any unprotected li-ion cylindrical battery as a stand-alone device, including with e-cigarettes, vaporizer mods or other products, constitutes a DANGEROUS misuse of the battery cells that poses a SERIOUS RISK of personal injury or property damage. These cells are only for prototyping with proper electronic protection circuits, and not for stand-alone use. 


These are high discharge current & high capacity Li-ion batteries. If mishandled or mistreated, these batteries can cause you SERIOUS INJURY. USE AT YOUR OWN RISK.


What is in the box?

  • Orbtronic 3120mAh 18650 Flat top Ultra High Drain 30A-40A Li-ion rechargeable battery cell.
  • Orbtronic high quality plastic protective battery case.
  • Safe Li-ion packaging.

Price listed is for one battery cell.

Your order will be shipped from Florida-USA.

View AllClose