Sanyo UR18650-NSX



The Panasonic-Sanyo UR18650-NSX is a relatively new cell with improved chemistry that allows a typical capacity of 2600mAh, and an amp discharge rating of 20A. 

It is a chemical mix-up of the NCR18650E (high capacity) and UR18650RX (high power) cells, and includes silicon graphite. In official tests by Panasonic-Sanyo, the cell performs very well all the way up to 25A. We can consider the NSX battery a slight improvement above the Samsung 25R5 and LG HE2/HE4.

Anti-counterfeiting measures

As well as improved performance, the NSX offers more sophisticated anti-counterfeiting than we have seen on any 18650 battery. Included are:

  • ID markings on the negative terminal. These are created using a precision-machine that no Chinese counterfeiters have access to.
  • QR Code, and special ink markings directly on the steel tube.

Battery specifications:

  • Model: UR18650-NSX
  • Manufacturer: Panasonic-Sanyo
  • Country of Origin: Japan
  • Chemistry: Lithium, nickel, cobalt, aluminium oxide and silicon graphite
  • Max. continuous discharge current: 20A
  • Rated capacity: 2500 mAh
  • Typical capacity: 2600 mAh
  • Nominal voltage: 3.6 V
  • Discharge end voltage: 2.5 V
  • Charging voltage: 4.20 +/- 0.05 V
  • Standard charging current: 1.75 A (180 minutes)
  • Length: 65.30 mm
  • Diameter: 18.50 mm
  • Weight: 45.8 g
  • UR18650-NSX Spec Sheet

Battery Bro has your back

Never worry about quality when buying from Battery Bro. We make sure you have the latest, greatest cutting-edge batteries, every time. 


18650 batteries are commodity cells, and as a wholesaler we understand how important price is to your bottom-line. As such, we offer international shipping directly from Asia to save money at higher quantities.


Shipping is 100% free in the continental US when shipped from our California warehouse. You pay what you see above and nothing more. Simple as that.

  • We ship worldwide! Learn more about our new PostNord shipping option for low quantity orders offered direct from our Asia warehouse.

With Battery Bro, we take care of customs clearance, international or domestic shipping to your door.

21-day full refund

Full 21-day refund on all orders. Buy our products, and if you're not satisfied, you get your money back.

Quality guarantee

Battery Bro takes several measures to make sure your batteries are of the highest quality:

  • We only deal with manufacturers or authorized distributors.
  • We inspect every battery and do our own testing.
  • We track each battery case with a unique authenticity code.

In Asia, 18650 batteries are binned by quality into A, B, and lower bins. C-bin batteries are often recycled from battery packs. Lower bin batteries will underperform and may be dangerous.

Battery Bro guarantees that all our batteries are Grade A. 


Take a look at our 18650 battery safety infographic

Some general tips

  • Do not exceed max. continuous discharge ratings.
  • Keep temperature under 60 degrees Celsius.
  • Do not carry loose batteries in your pocket.

Free Safety Booklets

For retailers selling 18650 batteries: 

18650 safety booklet

Increase battery sales and protect yourself from liability with 18650 safety booklets.

Customers ignorant to battery safety are not likely to purchase 18650 batteries or upgrade to MODs which require them.

You, the store owner can show your customers your shop cares about their safety

Simply bundle our safety booklets with the batteries you sell.

  • Did you know? In 2015, an e-cig shop was sued for one million dollars when a battery short-circuited in a customer's pocket. A safety booklet could have prevented that and protected the retailer from a lawsuit.

    Get 50 free booklets on your first purchase of 20 cells or more.

    Visit the battery booklet product page.