Sur Ron 72v KO 14kW RaceV2 Nano + RaceV2.5 72v 42Ah

£2,999.00 (price including VAT)

Sur Ron KO 14kW RaceV2.5 Nano Controller + RaceV2.5 72v 42Ah UK Stock

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Sur Ron KO 14kW RaceV2.5 Nano Controller + Racev2 72v 42Ah UK Stock

UK Stock, Including Shipping and Taxes


Sorry Only Ship To UK Mainland – Sorry, No International Shipping


We dispatch within three working days

We only sell the NANO controller in Black

Easy set up through the KO App.

We do not recommend power over 14000W or 200A DC and n0t to be held wide open throttle for long periods (or battery will roll back power)

We can not support this device and a request with KO direct:

Massive increase in range and acceleration over standard. Perfect for long rides. Set main power to 11KW (180A)

The Sur Ron display will allow two power modes and give speed

However using the KO Android app and mounted on the handlebars, power can be changed in seconds and battery voltage displayed (so you know how much battery you have left). Install a speedometer app and you can see your speed too. KO state they are working on their own display, but have not given a release date. We bought a cheap phone from a large supermarket chain without a sim, set it up on wireless and use it as a bike display as it connects to the controller via blue tooth – works great.

Controller Specifications – must not be set higher for this battery:

Input Voltage: 40-100v
Max Phase Current 480A
Max line Current 200A
Peak Output Power 14,000 Watts
Water Penetration ip67
Operating Temp -25C to 80C
Max Efficiency 98%

Swap out to this KO controller and set your DC line voltage  to 200A DC and phase max at 480A. Have a safe and genuine fast bike that will give heaps of range and fun. The battery is very similar in design to its fast 72v brother, but using a different cell and configuration to give maximum range without being crazy tall. We have given this battery a huge range. Perfect for trail riding or long distance) commuting.

Max controller setting is 200A DC (line current)

Sur Ron – Battery 20s10P 72v Molicell P42A  21700 cell (4200 mAh  per cell), with fully monitoring (charge and discharge) BMS. Battery designed to fit inside the Sur Ron battery compartment utilizing the existing battery tray. The cells are genuine branded cells specifically designed for large capacity storage and reliability. Other inferior cells used in cheaper packs simply can’t deliver like these. If you think the cost is high, these batteries have 208 cells that retail in the UK for around £8 each! not including: BMS, fabrication and shipping taxes.

The whole battery is fitted inside a hand made stainless steel case designed to handle those inevitable and hopefully not painful “Offs” with hard off road rides and giving masses more protection. The casing is powder coated inside and out.

The battery does not have an integrated volt meter. We supply a handlebar voltmeter and can be simply plugged into the charge port of the battery to show voltage (empty at 58V). However, we recommend installing an Android phone on your handlebars (we bought a cheap Android  phone from a well know super market and set it up on wireless so no need for a sim card)

Charger NOT included and can be purchased here:

Charger 72v (84v) 8A for large Batteries Suitable for 72v Sur Ron/Talaria


20s 10pMolicel P42a  21700.
Bluetooth ANT BMS.
Each cell with additional individual wrapping for added protection.
Additional layers of fibre board, Kapton tape, heat shrink with internal/external powder coated stainless steel sealed box to give maximum protection and insulation.
Double sandwich configuration using 0.2mm pure welded Nickle sheet.
Bluetooth BMS giving individual series condition with balanced charging and on/off function via a mobile device (we recommend always leaving on – never use SHUTDOWN).
An integrated handle for lowering the battery in and out.
Battery gauge to be seated on handlebars – not need if buying an after market controller with a volt display.
Integrated lifting strap.
Charger not included
The battery is in a super tough hand built stainless steel case designed to keep your battery safe in an accident and waterproof  except immersion or direct jet washing at the cable exits. Designed to fit straight into the bike and maximize the whole battery compartment. For Sur Ron bikes we supply a lifting kit for the battery compartment  – 2 minutes and simple). No movement- no rattles!

Please ALSO note, these are genuine new cells and made up into complete battery specially designed by us, built at our oversees  factory or here in the UK by our dedicated battery builders. We simply can’t buy a single battery, Thanks to Paypal fees, shipping and taxes the mark-up is minimal!

When connecting the battery to the bike and to avoid a spark – turn the red trip switch on the bike to off.

Charging: First time charging is VERY important. Always connect the charger to the battery with the charger powered up from the mains. This will stop a “Connection Spark”. The battery needs a “Balance Charge” on first charge. Please charge for 12 hours first time.

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 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.


Self Fitting: Not too difficult and fitting help available here:

We do not warranty damage caused from your fitting. Every kit is bench tested before leaving our premises.

Failure to follow the correct battery connection sequence may void your warranty

We give UK support!!!!

* UK Warranty 

Our warranty is limited to 12 months of r battery and 6 months for the controller  from time of purchase for manufacturing faults only. Due to the use and the nature of this device (Off-Road) and the potential excess  exposure to: water, rain, mud and the possibility to sustained high powered use/abuse, we do not warranty controllers that show signs of damage, excess heat or water penetration. All devices are fully bench tested working with a full working motor before leaving our premises. Any damage caused by your installation is not covered by our warranty. alteration may void warranty. This includes shortening of cables and changing connectors. We highly recommend the use of one of recognized fitters where installation is fully covered.

Warranties are not transferable.

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



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 recognizes 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 product sold or provided by Electron Cycles acknowledges and agrees that 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 19 kg
Dimensions 50 × 28 × 35 cm