Sur Ron Ultra Bee 81.4V 73Ah with Lid and Charger UK STOCK

£4,199.00 (price including VAT)

Sur Ron Ultra Bee 81.4V 73Ah Battery with Lid and Charger UK STOCK


2 in stock


Sur Ron Ultra Bee High Power, Super Long Range

81.4V 73Ah Battery

 Includes: Charger, Compartment Lid and UK Shipping





UK Shipping and with you within 3 working days

Please email:


The ultimate Ultra Bee battery? – We think so!!

Unleash the power and range of this awesome battery: 5862wH – Incredible!!
More volts, less heat, more RPM – go faster!!

We love this battery and our CEO rides his bike daily with this battery installed in his bike. No more range anxiety – winner!

Unlike others we stock these in the UK. We DO NOT drop ship like others: we do not grab your money and then pay the manufacture while you wait for delivery. We pay to have your goods sitting in our warehouse here in the UK BEFORE you have paid. We pay all the REAL taxes: VAT, Import Duty – no cutting corners, no scams, no dodgy dealings.
You don’t have to wait weeks and weeks and if there is an issue, we warranty them here in the UK.
We don’t make these ourselves, but we really highly regard the manufacturer – otherwise we wouldn’t sell them. The batteries’ are all CE approved and certified.

Standard Controller?
These will work with your standard controller, but please let us know, as we will change the BMS settings to make this compatible and work like a 72V. It will reduce the battery’s range a bit, but still loads more than a standard battery. This is the set up our CEO is currently riding. But we can change this free of charge with a remote session should you then buy a controller from us in the future: The EBMX X9000 works fantastic with this battery and bike.

Aftermarket Controller?
WOW! Unleash the power!!!
Our recommend power setting with the EBMX X900 is 220A DC or 17000Kw and 660PhA. The bike becomes an animal, a real weapon. Full range is available from this huge 5862Wh battery – thats almost 4 times more power than a standard Sur Ron Light Bee battery and over 50% more usable power than a Sur Ron OEM Ultra Bee.

So here’s the specs:

Voltage (Nominal) 22s: 80.3V
Capacity (nominal): 73Ah – 5862Wh
Weight: 25.5kg
Peak Power: 48kW
Constant Power 220A
Dimensions (mm):225mm x 177mm x 373mm
Dimensions (Inch):8.86″ x 6.97″ x 14.69″


Whats Included:

81.4V 73ah Battery, Inteligent Charger, bike battery compartment lid carbon ewffect (Injected Moulded – upgraded from white)

2 Year Warranty is for manufacturing defaults and does not cover missuse or accidental damage. These units are extremely strong and robust and will not let you down unless abused. We undertake warranties here in the UK. We take the pain!

Please note, Lithium batteries are considered hazardous and due care and attention should be taken. Although these cells are in wide use, and professionally manufactured in a purpose built factory, because of the power of the battery, we strongly recommend that precautions are taken. We do not recommend charging inside the family home and charging should always be supervised. We take no responsibility for misuse. These batteries are thoroughly tested (full discharge and charge cycles at the manufacturing stage and also pre-delivery). These are not DIY or amateur built devices.

Warranties are not transferable.

We reserve the right to slightly modify or change this product without notice.

Bike not included.

** we ship every Tuesday and Thursday from the UK for next day delivery.



Buyer releases Electron Cycles or any person trading on or behalf of the business known as Electron Cycles from any liabilities, therein known as Electron Cycles (expressed or implied, arising by law or otherwise) that may occur from the use of products sold by Electron Cycles and purchased by Buyer. These products are being sold for “Off Road/Competition Use” only and may be used only on two wheel vehicles (bicycles, electric bicycles, two wheel electric powered vehicles) used solely for “Off Road/Competition” (off-road being defined as a private land with land owners permission and not public highway or byway). The Buyer also recognises that Lithium batteries are classed as hazardous and should not be: stored, used, charged in place, facility any area that is not fire proof or safe to do so. That batteries should not be taken into the family home, office, workplace or school place. No other applications are intended or implied. The Buyer of this product sold or provided by Electron Cycles acknowledges and agrees that the Seller disclaims any warranty and expressly disclaims any liability for personal injury or damages or any damages to vehicle, expensed occurred, personal property or third persons. Electron Cycles will uphold the warranty of the manufacture of the product sold for a period of six months from date of purchase from manufacturer defect. In the event a manufacturer’s warranty exists, it is agreed and stated that under no circumstances shall the seller or manufacture be liable for any labour charged or travel time incurred in diagnosis for defects, removal, or reinstallation of this product, or any contingent expenses.



Additional information

Weight 29 kg
Dimensions 50 × 28 × 35 cm