Charging lockers solve a problem almost every school, office and visitor site now shares: too many devices, not enough secure places to store and recharge them. A laptop charging locker stores a device behind a locked door and charges it at the same time, so it comes out ready to use. This guide explains how laptop charging lockers work, the charging and door options available, how to size a unit, and how to choose between mains and USB charging.
What is a laptop charging locker?
A laptop charging locker is a steel locker with a power supply wired into every compartment. Instead of an empty cubby, each door hides a charging point — a UK mains socket, USB ports, or both. Users lock a laptop, tablet or phone inside and it charges securely while stored. It does the job of a locker and a charging station in one footprint, which is why charging lockers have replaced trailing extension leads and shared charging trolleys in many buildings.
How do charging lockers work?
Power enters the locker from a single mains feed, then distributes to each compartment. Depending on the model, a user plugs their device into a standard 3-pin socket, or connects via a built-in USB-A or USB-C port. The door locks, the device charges, and only the user (or an administrator) can retrieve it. Because the power is permanently installed, there are no chargers to share, lose or trip over.
Mains vs USB charging: which do you need?
The single most important decision is matching the charging type to your devices. The Probe PowerBox range we stock comes in three configurations:
- 3-pin UK mains — a full plug socket in each compartment. Best for laptops and any device that charges from a mains adaptor. Users bring their own charger, so one locker handles almost any device.
- USB-A + USB-C — dual USB ports per compartment. Best for tablets, phones and USB-C laptops. No bulky plug adaptors, and cables stay tidy. USB-C also supports faster charging on compatible devices.
- 3-pin mains + USB-A + USB-C combined — a mains socket and both USB ports in every compartment. Best where you have a mixed fleet of laptops, tablets and phones, or where future device types are uncertain.
If your site runs laptops today but may shift to tablets or Chromebooks later, the combined option future-proofs the investment.
How many doors do you need?
Door count determines both capacity and compartment size — more doors means more devices but smaller compartments. The PowerBox range runs from 4 to 16 doors:
- 4 door — large compartments for bulkier laptops, or shared storage for a small team. Compact footprint.
- 8 and 10 door — the most popular sizes. They suit a classroom set, a department, or a meeting-room device pool.
- 16 door — high-density storage. Ideal for phones and tablets, or for receptions and visitor areas where you need to charge many small devices at once.
A practical rule: count the devices you need to charge at peak, then add a little headroom for growth. It is cheaper to specify spare compartments now than to add a second unit later.
Flat top or sloping top?
Most charging lockers offer a choice of top. A flat top lets you stack units, sit them under shelving, or use the surface as a work ledge — good for storerooms and IT suites. A sloping top prevents clutter and dust from collecting and discourages people from leaving items on top, which keeps public-facing areas such as receptions and corridors tidy.
Charging lockers vs charging trolleys
Both charge multiple devices, but they suit different needs. A charging trolley is mobile and good for moving a class set of devices between rooms. A charging locker is fixed, more secure, and gives each device its own locked compartment — better where devices belong to individuals, where security matters, or where a permanent charging point is needed in a shared space. Many sites use both: trolleys for shared teaching sets, lockers for personal or visitor devices.
Where charging lockers are used
- Schools and colleges — secure storage and charging for laptop, Chromebook and tablet fleets.
- Offices and co-working spaces — hot-desking device storage and visitor charging points.
- Hotels, gyms and leisure — secure phone and tablet charging for guests and members.
- Visitor centres and receptions — high-density phone lockers that keep devices safe and charged.
Installation and power considerations
A charging locker needs a single mains supply, so plan its location near a suitable socket or fused spur. For larger installations or banks of lockers, involve a qualified electrician to confirm the circuit can carry the load. Site lockers where users can reach them easily but where the unit is not blocking a fire exit or walkway.
A quick buying checklist
- Match charging type to devices: mains for laptops, USB for tablets and phones, combined for mixed fleets.
- Count devices at peak and add headroom before choosing a door count.
- Choose a flat top for storerooms and stacking, a sloping top for public areas.
- Confirm the power supply and installation point before ordering.
- Standardise on one range across a site so you can expand capacity later.
Ready to choose?
Browse the full range of charging laptop lockers — Probe PowerBox units in 4 to 16 doors with mains and USB charging — or see our wider metal lockers collection if you also need general-purpose storage. If you are weighing up locker types more broadly, our guide on how to choose metal lockers for the workplace covers formats, locks and configurations in detail.