electric bikes

Here you will find a number of questions that we have been asked about the nano electric conversion kit.  

If you have a question that is not covered here, or elsewhere on the website please call us on 01926 334050.

Will the NANO Motor™ fit any Bike ?
At the moment we are only fitting the NANO motor™ to Bromptons and Moultons. We have looked at converting other bikes but we do not want to introduce another system until we are confident it is as well designed and compact as the Brompton nano kit.
Can I buy a new Brompton with a motor fitted ?
We are not a bike dealer however we have teamed up with some Brompton dealers and between us we can provide you a complete electric Brompton.
What is the maximum speed of a NANO motor™?
A nano Brompton can effortlessly get up to speeds of 15mph without any additional input. You can go faster by pedalling - but the motor will not assist above 15mph. The motor is designed to comply with the legal maximum of 15 mph in most countries.
What is NANO’s performance up hills ?
If you weigh 85kg or less, then you should find the following is the minimum that you should expect out of your NANO motor™:
10% hill ~ 7mph / 11Kph, unassisted
12% hill ~ some assistance in 2nd gear
14% hill ~ some assistance in 1st gear
What range can I expect from the NANO motor™?
On a fully charged 10Ah battery, based on an average male (70kg) cycling in normal conditions, then you can expect a range of between 21 miles (no pedaling at all), 42 miles unenthusiastic pedalling and up to 46 miles as tested by A to B magazine in February 2012. The 4Ah battery will give 8 - 16 miles.
Does fitting the NANO motoraffect my bike warranty ?
Yes, most bike manufacturers will not recognise their warranty once an electric conversion is added to their bike. 
What warranty is there for a NANO motor
conversion ?
We offer a 12 month warranty against manufacturing defects on the motor system and the battery. The cover for the battery is that it will retain 85% of its charge. 
This is on a return to base basis so you must return the bike or parts to us for repair or replacement.

You used to offer a battery repair service, why has that stopped ?
In the past we have been able to buy replacement cells but our supplier has changed their cells so unfortunately we can no longer provide a repair service as the new cells are not compatible with the original cells.

Will the NANO motor™ affect the Brompton fold ?
No, the system is designed specifically to work with the fold.

Are the NANO motor™ and other components waterproof ?
The motor is sealed, we use special waterproof connectors and the battery is in a damp-proof fabric cover inside a brompton bag. We have tested a bike outside all year and have not had any problems. 
I have a titanium Brompton, can I have a NANO motor conversion ?
Sure, but you will have to change the front 
forks to steel.
Titanium forks cannot be widened.
Let us know the fork colour and we can order these for you. There is a charge for this as price list.
Can buy a NANO motorconversion without a battery ?
Yes, you can supply your own battery and for
£10 we will suppy you with connectors.

How do I send my Brompton to you for fitting ?
If you have the original box that your Brompton came in you can use that, with some extra padding, alternatively we can send you a box. Call or email for our information sheet 
What weight can the NANO motor™ comfortably take ?
Obviously the lighter the person/bike the better the motor will perform. For a 85kg man, the NANO motor™ can comfortably do 15mph on level ground and easily go up hills with no additional pedalling.
What weight can the NANO comfortably pull ?
As reviewed in A to B magazine, the NANO motor™ can comfortably pull a children’s tag along with a child on it, or a children’s trailer with 2 small children in it.
When can I use the power assistance ?
When you like as long as you are peddaling! 

Which throttle does the NANO motorconversion kit include ?
For most Bromptons (except P handle bars) we supply the twist throttle as standard.  This is fitted on the right handlebar and is similar in use to a motorcycle throttle so is very intuitive.  The further you twist it the more power you receive up to 15mph.  
For P handlebars, and on request, we can provide a thumb throttle which is also fitted on the right handlebar.
In both cases we replace your left handlebar to match.
How do I cut the motor ?
Stop peddaling, release the grip on the twist or thumb throttle, (as it’s spring loaded it will automatically turn off) or apply the brakes which will cut the motor out.
What are the running costs of a NANO motor™?
The only running cost is the cost of electricity to charge the battery.  It costs pence not pounds to fully recharge the battery, and A to B magazine managed a range of 48 miles out of a single charge. 
What if I get a puncture ?
The NANO motor™ is located in the front wheel which is also one of the easiest to remove of any ebike. We have fitted special waterproof connectors at critical points; one is by the motor so it is easy to take the wheel off and repair the puncture as normal.

I live outside the UK, can I have a NANO motorconversion ?
We can send kits almost anywhere in the world, although some shipping costs are very high due to the batteries being classed as dangerous goods.  Please bear in mind that the fitting instructions are in English and the warranty is on 'Return to base' so you would be responsible for the cost of shipping back to the UK for repairs.

We do have dealers in some countries who we work with, like BBike in Rome who will fit the kits for you.


Why is the shipping so expensive ?
The UN have designated batteries of this size as dangerous goods
Therefore they have to be shipped in UN aproved boxes with special labels and documentation. We ship all batteries in compliance with the UN regulations which means the shipping is more expensive but it is legal.


Is the NANO motor legal?
Yes. The main legal requirements in the EU regarding electrically assisted bikes are on the following link

Do I have to have a license or road tax to ride NANO motor ebike on the roads?
In Europe, Australia and most states in America you do not need a license, a test, road tax or MOT to ride an electric bike.
Can I put the NANO motor onto a rear wheel?
Can I use the bike like an ordinary bike?
Yes. If you don't use the throttle at all, then the front wheel free wheels just like a normal bike. Or you can pedal as well as using the motor which gives you greater speed and uses less of the battery’s power, enabling you to go further.
Can a NANO motorbe converted back to a normal bike?
You can, although we are sure you would not want to. The wiring and components could be fairly easily stripped out but to fit the motor the front forks will have been widened so you would need to replace them with new forks. 
Can I charge my battery with an inverter
Yes, our chargers can be used with an inverter which is rated 150w or more but we recommend use with a 200w pure sine wave inverter.

Can I charge my battery outside the UK
Yes, the 2.5 and 5Ah chargers are rated for use worldwide. They are supplied with a UK lead but we can provide an EU lead on request. For use in other countries use an adapter or buy a lead locally.
 Bosch Chargers can vary so check locally.

Can I take my battery on a plane ?
Yes, batteries over160Wh are classed as dangerous goods and not allowed on passenger planes. The Bosch 4Ah battery is 144w/h so is allowed on a plane. You may need to arrange approval in advance so check with your airline.
More information can be found on

How can I pay ?
Credit card, bank transfer or cheque.  

You can also pay by PayPal but
payments are subject to a 3%additional fee
due to their high charges

I had a NANO conversion a few years ago what are the differences now ?
The main differences are that the controller is now placed more discretely by the luggage block and all the cables are tidier.  The batteries are only the long, thin shape and not the square ones but the connectors are the same.  
From 2016 we will also be fitting pedal sensors on all systems to comply with new UK regulations.
Can you increase the power out of my nano 2 ?
No. The power levels are set as per the legal requirements in the UK and also to get the best performance from the motor.  The batteries are the same power output but give different ranges and the controller and motor are co-ordinated to give a maximum 15mph speed.