Cordless Table Lamp Battery Life and Charging

A cordless table lamp runs on a built-in rechargeable battery. Listings quote a capacity in mAh and a runtime in hours, but the numbers do not always compare directly. This guide explains how to read them. For specific lamps, see our cordless table lamps list.

The Short Version

Treat a runtime claim as a range. Most listings give a long figure for the lowest brightness and a shorter one for the highest. Capacity in mAh is useful within a single lamp family, but battery voltage and the light draw differ, so a bigger mAh number does not always mean a longer runtime. Charging is usually by USB-C, from about 2 to 8 hours as listed.

What the Listings Show

Lamp	Battery	Listed runtime	Listed charge time
Litluzecozy small cordless	2000 mAh	16 to 32 hours	About 2 hours
Kakanuo small cordless	4000 mAh	30 hours high, 150 hours low	Included USB-C cable
Kakanuo gold	4000 mAh	8 to 40 hours	About 6 hours
Yogaret gold 2 pack	6000 mAh	12 to 42 hours	About 6 hours
LightRound amber glass	7500 mAh	Up to 40 hours	About 4 to 5 hours
O’Bright Dune	10,000 mAh	About 12 hours at 380 lm, 100 hours lowest	5V/3A USB-C
LUXMET RGBIC+W	1200 mAh	About 3 hours	USB-C

Figures are as published by each seller and are not our measurements.

Reading a Runtime Claim

Runtime depends on brightness and mode. A claim of up to 100 hours is for the lowest setting. Look for a figure at high brightness. Only the O’Bright Dune lists output (380 lumens) next to a high-brightness runtime of about 12 hours.

Charging and Care

Most of these lamps charge over USB-C. Several listings say the lamp can run while charging and that no wall adapter is included, so use one rated for the lamp. Charge as the maker instructs, keep the lamp away from heat, and stop using one whose case swells or gets hot.

Weather and Outdoor Use

Some listings, such as Yogaret (IP65) and EZVALO (IP44), state a water-resistance rating. Those are the sellers’ claims, so bring a lamp indoors in rain and do not rely on the rating for a wet location.

Who Should Look Elsewhere

• Anyone who needs a lamp that stays on all night every night. A plug-in lamp is simpler.
• Anyone who wants an exact runtime. Listings give ranges, and we did not measure them.

Frequently Asked Questions

How long does a cordless table lamp last on one charge?

Listings range from about 3 hours to more than 100 hours, depending on capacity and brightness.

Does a higher mAh always last longer?

Not always. Brightness and battery voltage also matter.

Can I use the lamp while it charges?

Several listings say yes.

Can I use any USB charger?

Use the cable and a charger that match the maker’s guidance.

Safety note: table lamps plug into household power, a USB adapter, or a lithium-ion battery. Look for a UL or ETL mark on the lamp or its adapter, and use only the bulb type the maker lists: plug-in lamps have a maximum bulb wattage, and some battery lamps take only a low-voltage 5V bulb, never a standard 120V one. Keep cords away from heat and walkways, do not cover a lit lamp with fabric, and do not exceed the rating printed on any built-in outlet. Charge battery lamps as the maker instructs and stop using one if the case swells or gets hot. We repeat certifications only as the seller lists them, so confirm the mark on the product itself.

Check current pricing and availability for the LightRound Cordless Table Lamp (7500mAh).

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