A rechargeable bedside lamp runs on a built-in battery that you top up over USB, so it can sit wherever the bed ends up rather than wherever the socket happens to be. Losing the flex changes what matters when you choose one: battery life, charging time and how bright it stays on a low setting become more important than cable length or switch position.
That suits British bedrooms rather well. Older houses often have one double socket on the wrong wall, newer ones hide it behind the headboard, and a trailing extension lead across the carpet is nobody’s idea of good design.
Two quite different things are sold as cordless. The first is a proper bedside lamp with a lithium-ion battery (usually 3.7 V) that charges from a USB or USB-C lead, much like a phone. It gives enough light to read by and lasts several evenings between charges. Some sit on a charging base; many will keep shining while plugged in.
The second is a small night light running on two or three AA or AAA batteries. It draws a fraction of a watt, gives a soft glow of a few lumens and often switches itself on with a motion or dusk sensor. It is brilliant for finding the door at 3 a.m. and hopeless for a chapter of a novel.
| Feature | Typical figure | Why it matters at the bedside |
|---|---|---|
| Brightness | 150–300 lm for reading; 2–30 lm for a night light | enough to read by without lighting the whole room |
| Colour temperature | 2200–2700 K warm white; 3000 K for reading | warmer light feels calmer late in the evening |
| Battery capacity | roughly 1200–2600 mAh | larger capacity, more evenings per charge |
| Run time | 4–8 hours at full brightness, 15–25 hours dimmed | quoted maximums often refer to the lowest setting |
| Charging | 2–5 hours via USB or USB-C | a standard phone plug or laptop port will do |
| Controls | touch dimmer, timer, sometimes a remote | easy to find in the dark, switches off if you nod off |
A touch dimmer is the feature people miss most if they skip it. Tapping the top of the lamp is far easier in the dark than hunting for a tiny button, and reading on a lower setting stretches each charge considerably. An auto-off timer of 30 or 60 minutes saves you waking up to a flat battery.
In a lot of UK bedrooms, yes, and usually because of the wiring rather than the lamp. A tenancy rarely lets you add a socket, and in a house you own, moving one means an electrician, lifted floorboards or chased plaster, all for the sake of a reading light. A lamp you top up once or twice a week gets round the problem entirely. It earns its keep in a few particular spots:
A plug-in lamp still has the edge in a few cases: if you want a light burning all night, every night, if you read for hours at a stretch, or if you need strong task light at a dressing table. Some cordless lamps also step down their brightness as the battery runs low, so steady output until the end of the charge is worth checking in the specification.
Height still matters even without a cable. For reading, the light source should sit roughly level with your shoulder when you are propped up in bed, so a small lamp may need a book or a higher shelf beneath it.
Start with the end of a battery’s life, because it is the bit most often got wrong. Spent AA and AAA cells go in the collection box that most shops selling batteries keep near the till. A lamp with a built-in battery counts as electrical waste, so when it finally gives up it belongs at the small-electricals point of your local recycling centre, not in the general bin.
Night lights that take ordinary cells are low-maintenance, with one catch: an alkaline battery left in a lamp nobody uses can leak and eat away the contacts, so take the cells out if the light is going unused for a while. Rechargeable NiMH cells (1.2 V) usually work as a straight swap, if a touch dimmer. Some small decorative lights run on button cells, which can do serious harm if a child swallows one, so in a nursery choose a compartment that needs a screwdriver to open.
The lithium-ion pack in a rechargeable lamp lasts longest if you treat it like a phone you want to keep for years. Heat does the most damage: charge it on a hard surface, never on a radiator shelf, a sunny windowsill or under the duvet. Little and often is kinder than running it dead every time. If the lamp is being put away for a season, park it at roughly half charge and give it a top-up every few months. Over a few hundred full charges the run time slowly shrinks; that is ageing, not a defect.
Yes, in two forms: reading lamps with a built-in rechargeable battery and small night lights running on AA or AAA cells. For nightly reading, choose the rechargeable kind.
Usually four to eight hours at full brightness and roughly 15–25 hours on the lowest setting. Half an hour of reading each night typically means charging once a week or less.
An LED lamp gives off little heat, so leaving it on is not a safety worry. A rechargeable one will only last until morning on a low setting, though, so check the dimmed run time if you want a night-long glow.
The charging circuit cuts off once the battery is full. Still, charge it on a hard surface away from bedding, using an undamaged plug.
Yes – some mount with a magnetic or screw-fixed bracket and lift off for charging, which frees up the bedside table entirely.
A stable base, a shatterproof shade, a very low warm setting and a timer that switches off once they are asleep.
More on shades, sizes and styles for the bedroom: bedside lamps. If you would rather free the table altogether, read more about battery-operated wall lights.
