Electric scooter conversion kits

Lambretta J Range Conversion Kit

£ 3,495.00 GBP

Watch our product video on YouTube

Lambretta J Range Conversion Kit

The Lambretta J range can now be converted to battery power and can be fitted with a single battery with a range of approximately 30 miles.

£ 3,495.00 GBP

Now you can convert any Lambretta J range scooter to full electric power by installing one of our electric conversion kits. The kits have been built and designed by us specifically for vintage Lambretta scooters using our unrivalled experience in restoring vintage scooters.

Each of our conversion kits comes with a DC brushless electric motor, sinusoidal motor controller, custom made swing arm, under seat battery tray and a single removable LG lithium-ion battery, along with a keyless ignition, battery gauge, all cables, LED headlight conversion and a charging cable.

Additional batteries and chargers can be purchased separately.

If you are having a scooter restored by us, then we can include an upgrade to full electric power in that project, or you can order one for delivery anywhere in the world and either install it yourself (with help from us) or get a local mechanic to do it for you.  It is a really simple installation process.

The 64v 28ah, 1800w battery is capable of up to a range of 30 miles, ideal for your daily commute.

We recommend carrying an extra charger with you, to allow you to top up wherever you are or alternatively purchasing a second battery to leave at another location.

The stats we quote for our battery power (speed and range) are based on our actual usage tests on local roads and local conditions. They are not hyped up "ideal conditions"/theoretical numbers.

Batteries on your scooter can either be charged onboard or removed for charging indoors.

The Lambretta J50 and the Lambretta J125 along with it's other derivatives where notoriously slow vintage scooters but once our electric conversion kit is installed, it results in smooth, fast acceleration and a top speed of 55 mph.

For more detailed information, we have created a number of videos on our YouTube channel.

All Project: E scooters are London ULEZ and Congestion Charge exempt as well as qualifying for free road tax.

£ 3,495.00 GBP

Finance also available

GRoundbreaking electric scooter design

a full conversion

We painstakingly designed and built this unique kit from scratch, choosing only suppliers that met the quality and reliability we demand.

Simple installation

Our Project:E kits were specifically designed to be quickly and easily installed at home with only a basic toolset. A simple instruction manual is supplied and no welding or grinding is necessary. We also offer an installation service at our London Workshop for £500 or we can ship the kit to almost anywhere in the world for DIY installation (or with help from a local garage).

Great to ride

project:E accessiories

64v 26 ah Battery

£ 995.00 GBP

Universal battery for all Vespa models and Lambretta small frame models.

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Large 72v 35 ah battery

£ 1,395.00 GBP

fits all large frame Vespa under either side panel

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Project:E 64v Charger

£ 180.00 GBP

Charger for 64v batteries.

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Project:E 72v Battery

£ 1,195.00 GBP

Battery for all large-frame Lambretta models.

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Project:E 72v Battery Charger

£ 180.00 GBP

Charger for 72v batteries.

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Project:E Vespa Side Panel Battery Tray

£ 100.00 GBP

A battery side panel tray for all Vespa large-frame models.

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Top speed
Removable battery
Delivery date
Charge time 70%
Charge time 100%
Battery capacity
Wheel size
70 miles
6 weeks
90 mins
64v 30 AMH


All Retrospective Classic scooters and Project:E equipment comes with a full 12 month warranty, covering all parts and labour. New scooters all come with full manufacturer warranties which vary from 12-24 months for the scooters and up to 3 years for the batteries.


Low rate finance options are available on a wide range of our bikes.

Shipping Rates

See our UK & International shipping rate estimates



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