E-bike fire safety messaging tends to recommend only ever using the charger that came with your bike as the dangers of using an incompatible one are so significant. However, the EU recently established USB-C as its standard for charging personal devices and Estonian brand Ampler has consequently gone down that route for its upcoming Nova e-bike.
“Ampler Nova e-bikes can be charged with a regular laptop charger,” explained the brand’s chief technology officer, Kristjan Maruste. “[There’s] no need to carry around a bulky, custom, bike-specific power block.”
Maruste says the big advantage of USB-C is that you can charge your bike wherever you are, “at home, on the go or even at the office – use your own or even borrow a charger from a friend or a colleague.”

Ampler have apparently been looking to make this sort of a move since around 2020, but it has taken a while for the technology to get up to speed.
Specifically, in December, the EU standardised charging ports for mobile phones and other portable electronic devices. The ‘Common Charger Directive’ now requires the use of USB-C based chargers.
The rules apply to mobile phones, tablets, digital cameras, headphones, headsets, videogame consoles, portable speakers, e-readers, keyboards, mice, portable navigation systems and earbuds sold in the EU. From 28 April 2026, they will also apply to laptops.
The UK is currently carrying out a consultation on whether to follow suit.
> Are e-bike batteries safe? What’s the difference between a safe battery and a fire risk?
The bike
A year or so ago, we tested the Ampler Curt 11-speed and liked it very much. Before that, the Ampler Stout also impressed us.
The Nova and Nova Pro are visibly cut from the same cloth.

They’re lightweight urban hybrids with rear hub motors and 336Wh integrated batteries, which can, apparently, be fully charged with a USB-C PD 3.1 charger in just three hours.
The Verge reports that they’ve also been tested with older Ikea and MacBook chargers that support the USB-C PD 3.0 spec.
The base model Nova, which costs €2,990, comes with 9-speed Microshift gearing in either a diamond or semi step-through frame.
There are two gearing options for the €3,490 Pro model: either Shimano Deore 10-speed or a single-speed version with a belt drive – again with a choice of frame.
They’re available to order now with shipping due to begin in June.
