The Battery Ban Wave: What’s Actually Changing in Building Codes

Over the past few years, a steady stream of headlines has covered cities introducing restrictions on charging and storing e-scooters and similar battery-powered devices inside residential buildings. Some coverage frames this as an overreaction, others as long-overdue regulation catching up with a genuine safety issue. The reality, as usual, is more specific and more interesting than either framing suggests — and the details of what’s actually changing matter a lot for anyone in this industry.

What Triggered This

The proximate cause is straightforward: a series of serious fires, some with fatalities, traced back to lithium-ion battery failures in personal electric vehicles charging inside apartments, hallways, and stairwells. These incidents share some common features that are worth understanding, because they explain why the regulatory response has focused where it has.

The devices involved in the most serious incidents have often been ones with batteries that didn’t go through any meaningful safety certification process, sometimes after-market replacement batteries or chargers that weren’t matched to the original device, and storage situations where a damaged or improperly maintained battery was charging unattended for extended periods, often overnight, in spaces with limited ventilation and only one means of escape.

This combination — uncertified components, mismatched charging equipment, unattended charging in escape routes — turns out to be a recurring pattern across many of the most serious incidents. That pattern matters because it shapes what regulators are actually trying to address, which is narrower than “all batteries are dangerous.”

What the New Rules Actually Say

The specifics vary by jurisdiction, but a few common elements show up repeatedly in the regulatory changes that have actually been adopted, as opposed to the broader proposals that sometimes get more attention in initial coverage.

Many of the rules focus on charging location rather than ownership or use of the devices themselves. Restrictions on charging in hallways, stairwells, and other shared escape routes are far more common than outright bans on owning or using the devices. This distinction gets lost in a lot of casual discussion, but it’s significant — the policy goal is generally about not blocking egress routes with a fire risk, not about restricting personal transportation choices broadly.

A second common element is a push toward certification requirements for batteries and chargers, often referencing the same kinds of safety standards that already apply to other consumer electronics and personal transportation devices. This is less about banning anything and more about closing a gap where uncertified, often very cheap replacement batteries and chargers had become common, particularly for older or damaged devices.

A third element, more common in newer building codes than retrofits to existing buildings, involves requirements for dedicated charging areas with specific ventilation, fire suppression, and electrical capacity — essentially treating battery charging as something that needs purpose-built infrastructure rather than an incidental activity that happens wherever there’s a power outlet.

The Retrofit Problem

The gap between what makes sense for new buildings and what’s realistic for existing buildings is one of the more genuinely difficult issues in this whole area. A new building can be designed with dedicated, ventilated charging areas as part of the original plan at relatively modest incremental cost. An existing building, especially older residential stock, often has no obvious space to retrofit this kind of infrastructure, and the cost of doing so can be substantial relative to the building’s overall value.

This creates a situation where the buildings most likely to have residents relying on e-scooters for transportation — often older, denser urban buildings — are also the buildings least able to accommodate the kind of charging infrastructure that would address the underlying safety concern. Restrictions on indoor charging in these buildings, without an alternative, effectively push charging into informal or risky arrangements anyway, which doesn’t obviously improve safety even if it addresses the immediate liability concern for the building.

Some cities and building operators have started experimenting with shared charging facilities — secure, ventilated rooms or outdoor structures where residents can charge devices safely, sometimes with swap-style battery systems that reduce how long any individual battery needs to be actively charging. These remain relatively uncommon, but they represent one of the more constructive responses to the retrofit problem, as opposed to restrictions that simply shift risk elsewhere without addressing it.

What This Means for Manufacturers and Brands

For companies making and selling these devices, the clearest signal from this whole episode is that battery and charger certification is moving from a nice-to-have differentiator to something closer to a baseline expectation, and probably eventually a hard requirement in many markets. Products built around certified battery management systems, with chargers specifically matched and validated for the device, are increasingly likely to be the products that remain viable for sale and use as regulations tighten.

There’s also a longer-term opportunity in the swap-battery and shared-charging-infrastructure space. If buildings are going to need some kind of solution for safe charging that doesn’t depend on every resident having a dedicated outlet and the judgment to use it safely, there’s a real gap for products and services that make safe charging easier rather than just more restricted.

It’s worth stepping back and noting that this entire episode is, in a sense, a symptom of a product category growing up faster than the regulatory and infrastructure environment around it. The devices became popular and useful faster than building codes, certification requirements, and charging infrastructure could adapt. The current wave of restrictions is the regulatory environment catching up — sometimes clumsily, sometimes in ways that create new problems while solving old ones, but fundamentally as part of a normal process that most transportation technologies go through eventually.