How many doors do PowerBox charging lockers come in?

Four, eight, ten and sixteen doors, each available with a flat or sloping top. Compartment sizes are 300 × 300 mm, 300 × 450 mm, 380 × 450 mm and 450 × 450 mm.

Which size is best value per compartment?

The 8-door bank. At £987.31 for the full 3-pin mains plus USB-A and USB-C specification it costs only £11.59 more than the 4-door at £975.72 and gives twice the compartments — £123.41 per compartment against £243.93. The cheapest compartment in the range is the 16-door mains-only bank at £66.17.

How much does a sloping top add?

A flat £24.76–£24.78 regardless of bank size, so it works out at 3.0% on a 10-door mains unit and 1.4% on a 16-door mains-plus-USB unit. A sloping top stops bags and cups being left on the roof of the locker, which matters most in corridors and reception areas.

What colours are available?

Three carcass colours — black, silver and white — and seven door colours: black, blue, green, red, silver, white and yellow. All are powder-coated over cold-rolled mild steel.

Does each compartment charge independently?

Yes. Every compartment has its own charging outlet behind its own locked door, so a device charges without sharing a socket or leaving a charger out in the open.

Do charging lockers need an electrician to install?

The locker bank needs a mains supply at its installed position, so a competent electrician should make the final connection and the installation should be inspected and tested to BS 7671 like any other fixed electrical equipment. Plan the socket position before the lockers arrive — moving a bank after installation is the expensive part.

Is USB-A still worth specifying?

Yes, where the device mix is mixed or unknown. USB-A is the older rectangular connector most people still carry a cable for, so it covers visitors and personal devices that USB-C-only banks will not. Most PowerBox models pair USB-A with USB-C in the same compartment, which is the safer specification for a shared or public bank.

USB-A Charging Lockers

USB-A charging lockers fit a familiar USB-A outlet inside each compartment, charging phones and tablets over the standard USB cable most people already carry. They suit schools, gyms, visitor receptions and workplaces that store and charge devices in bulk. Every locker in this range is a Probe PowerBox locker configured with USB-A charging.

What's in this range

Available as 4, 8, 10 and 16-door layouts with a choice of flat or sloping top. Most models pair USB-A with USB-C so newer and older devices both charge from one bank, and several add a 3-pin UK mains socket for laptops. The lockers share the cold-rolled mild-steel Probe build of the rest of our metal lockers — powder-coated and made in the UK.

Choosing USB-A charging lockers

Device type — USB-A covers the majority of phones and tablets on a standard cable; add USB-C for the latest devices and mains for laptops.
Compartment count — 16-door maximises phone-sized bays per footprint; 10-door gives larger compartments for tablets.
Top style — sloping tops discourage clutter in busy areas; flat tops keep height and footprint compact.
Locking — a Type A cam lock on every compartment, fitted as standard. No hasp, padlock, coin-return or electronic option is stated in the Probe product data.

Comparing charging standards? Our charging lockers buying guide explains USB-A vs USB-C vs mains and how to size compartments.

Door count is the price decision, not the charging type

Across the whole PowerBox range the cost per lockable compartment falls sharply as the bank gets bigger, and the step from four doors to eight is the one worth knowing about:

Bank	Charging	From	Per compartment
4 door, flat top	3-pin mains + USB-A + USB-C	£975.72	£243.93
8 door, flat top	3-pin mains + USB-A + USB-C	£987.31	£123.41
10 door, flat top	3-pin mains + USB-A + USB-C	£1,164.50	£116.45
16 door, flat top	3-pin mains + USB-A + USB-C	£1,770.61	£110.66
10 door, flat top	3-pin mains only	£838.96	£83.90
16 door, flat top	3-pin mains only	£1,058.65	£66.17

The four-door bank costs £11.59 less than the eight-door and gives you half the compartments. Unless the alcove genuinely will not take the taller unit, the eight-door is the better buy at almost identical money. Beyond that the curve flattens: the sixteen-door reaches £110.66 per compartment on the full mains-plus-USB specification, and a mains-only 16-door bank is the cheapest compartment in the range at £66.17.

The sloping top is a flat charge, not a percentage. It adds £24.76–£24.78 whatever the size of the bank — so it costs 3.0% on a 10-door mains unit and only 1.4% on a 16-door mains-plus-USB unit. If you want a sloping top to stop items being left on the roof, it gets proportionally cheaper the bigger the bank you buy.

Every bank shares the same Probe specification: cold-rolled mild steel, powder-coated, three carcass colours (black, silver, white) and seven door colours (black, blue, green, red, silver, white, yellow), in 300 × 300, 300 × 450, 380 × 450 and 450 × 450 mm compartment sizes. See the full charging lockers range or the wider metal lockers collection.