Brompton Electric - Greenway 345 kWh Batt Ac/p/Gline

The Brompton Electric Greenway is a 345kWh battery designed for Brompton's electric folding bikes, compatible across the C Line, P Line, and G Line electric models. This is the power unit that transforms a standard Brompton fold into an e-bike, making urban commutes and longer mixed-transport journeys noticeably easier.

The battery integrates with Brompton's compact fold design without adding bulk where it matters. For G Line models, it works directly with the G line bag, whilst C Line and P Line riders can use it with their standard bags when paired with the adapter frame. This flexibility means you're not locked into one specific bag setup if you already own Brompton luggage or plan to swap between models.

Day to day, the 345kWh capacity covers typical urban commutes and the mix of cycling and public transport that Brompton owners rely on. It sits within the folding frame structure, keeping the bike's legendary compact silhouette intact—you still get that same manageable fold that fits under a desk or into a train luggage rack, just with motor assistance built in. The battery charges via standard power, and the integration is clean and unobtrusive, letting the bike's design remain the priority.

This battery suits anyone who owns or is building a Brompton Electric across the current range and wants either the correct power unit from new or a replacement. It's equally relevant for riders who already have a Brompton Electric and need a spare battery for longer days, or those expanding a multi-model setup within the same ecosystem.