My EV Stopped Charging Halfway: What to Do

An EV stopping mid-charge is frustrating, but it is more common than most drivers expect and is usually fixable on the spot. The cause might be a brief network communication glitch, a safety cut-off triggered by heat or a fault code, a payment authorisation timeout, or a loose cable connection. Most interrupted sessions can be recovered in minutes by following a simple sequence of checks, and only a small number of cases point to a genuine fault requiring a technician. Our guides hub covers other common charging questions if you want more context.

Check the obvious first: cable and connection

Before assuming anything is broken, unplug the cable from both the charger and the car, then reconnect firmly at both ends. Cables that are not fully seated trigger a safety interlock that cuts the session. Once reconnected, wait a few seconds for the car and charger to handshake, then check whether charging resumes. If you are using your own cable at an untethered unit, also inspect the cable for any visible damage such as bent pins or a cracked housing, because a damaged cable can cause intermittent sessions. A quality EV charging cable with a robust locking mechanism reduces the chance of a mid-session disconnect.

Re-authenticate with the charger

Many public charger sessions time out if communication with the network's server is lost, even briefly. The charger may still be powered and look normal, but the session has ended in the network's system. To recover, tap your contactless card or RFID card on the reader again, or open the network app and start a new session. You should not be double-charged for the portion already delivered, though it is worth checking your statement. If the re-authentication screen is frozen or unresponsive, try pressing the charger's physical stop or reset button if one is present, then re-authenticate from scratch.

Check your car's own charge settings

Modern EVs let you set a charge limit, often defaulting to around 80% to protect battery longevity on daily use. If you forgot to raise the limit before a longer trip, the car will politely stop at that threshold and the charger will follow suit. Check your car's infotainment or the manufacturer's companion app to see the current limit and adjust it before restarting the session. Some cars also have a scheduled charging feature that overrides a manual session if it conflicts with a saved schedule, so check that too.

Consider thermal management and weather

EV batteries charge best within a specific temperature window. In cold weather, the car may need to warm the battery before accepting a fast charge, leading to a slow start that can look like a stall. In very hot weather, the battery management system may reduce or pause charging to prevent overheating. Neither of these is a fault. If you suspect temperature is the cause, wait a few minutes before retrying. Many newer EVs have a pre-conditioning function in their navigation or app that warms or cools the battery en route to a rapid charger, which helps avoid thermal throttling on arrival.

When the charger itself is the problem

If re-authentication does not work and your car charges fine at other units, the charger is likely at fault. Note the charger ID (printed on the unit), call the network's helpline number (also on the unit), and report the fault. Most networks can attempt a remote restart. If there is an adjacent unit free, try that while you wait. Leave a fault report on Zapmap so other drivers know to avoid the unit. If you are on a time-sensitive journey, this is also the moment to switch to a different nearby network using Zapmap's live filter.

What if the problem follows you to other chargers?

If your session is cut short at multiple different chargers, the fault is more likely with your cable, charge port, or car. Inspect the cable connectors for bent or corroded pins and check that the car's charge port is clean and dry. Some cars log a fault code when a session ends abnormally, which your dealer or an independent EV specialist can read with a diagnostic tool. If your cable is showing signs of wear, replacing it is a straightforward fix. Browse our Type 2 charging cables to find a replacement that suits your car and charger type.

Frequently asked questions

Will I be charged twice if my session is interrupted and I restart it?

You should not be, but it is worth checking your bank statement or the network app's session history. Most networks only charge for energy actually delivered. If you see a duplicate charge, contact the network's customer support with the charger ID and session time and they should issue a refund. Keep the contactless receipt or in-app record as evidence.

Can a firmware update on the charger cause a mid-session stop?

It is unusual for a network to apply firmware updates while a session is active, but it does occasionally happen during brief maintenance windows. The charger screen will typically show a message. If this is the cause, simply move to an adjacent unit or try again once the update completes, which is usually only a few minutes.

My car says it is charging but the state of charge is not increasing. Why?

This can happen when the car is running heating, cooling, or battery pre-conditioning simultaneously. The power drawn by the car's climate systems temporarily offsets the energy going into the battery. It is normal and the charge percentage will begin rising once the thermal system is satisfied. Check back after five to ten minutes.

Is it safe to leave the car charging overnight if it stopped earlier?

If the session stopped due to a soft fault such as a communication drop or charge limit reached, restarting and leaving it overnight is fine. If the car logged an active warning or fault code, address that before leaving it on charge unattended. When in doubt, check the car's own status screen and consult your manufacturer's guidance.

Can a bad cable cause my EV to stop charging mid-session?

Yes. A cable with damaged pins, a faulty lock mechanism, or a degraded internal conductor can cause intermittent communication errors that the car's safety system interprets as a fault, ending the session. If sessions abort consistently with one particular cable, replace it. Inspect cables regularly for bent pins, cracks, and fraying near the connectors.

How do I report a broken public charger in the UK?

Call the helpline number printed on the unit and report the charger ID. You can also log the fault on Zapmap, which alerts other drivers and feeds data back to some networks. If the unit is on council-managed land, your local authority may also have a reporting route. Persistent faults at a location can be escalated to the network's operations team via their website.

Most mid-session charging stops are resolved in a matter of minutes once you work through the checklist above. If the issue turns out to be your cable, browse our full cable range to find a direct replacement, or if you want the security of a backup for longer journeys, a portable EV charger means you are never entirely at the mercy of a public network.