Equipment type
Rechargeable nail lamps: battery claims, wavelength and travel
What makers claim for cordless nail lamps: battery and charging, wavelength, timers and voltage, plus the battery-safety and travel points to check.
Also listed as cordless nail lamp, battery nail lamp, portable nail lamp
Short answer
A rechargeable lamp has a built-in battery so it works without a cord. Kiara Sky's Beyond Pro Rechargeable LED Lamp III lists 30 LEDs, 400 nm, 15/30/60 s timers and a 120 V (US) version. Battery claims vary and rarely come with a method. Not every lamp brand makes one: SUNUV says all of its lamps are corded.
Key facts
- Input voltage
- Available in 120 V (US) (Kiara Sky Lamp III); 5 V 1 A input (Kiara Sky rechargeable flash cure lamp)[1][3]Maker statements.
- Battery (claimed)
- 24 hours per charge claimed (OPI Lightning); two 2,500 mAh 3.7 V cells (Kiara Sky rechargeable flash cure lamp)[2][3]Kiara Sky's page gives two different battery-life figures, so we publish none.
- Wavelength (claimed)
- 400 nm (Kiara Sky Lamp III); 365 + 395 nm (Kiara Sky rechargeable flash cure lamp)[1][3][2]OPI's Lightning page gives ambiguous wavelength text, so we do not state one for it.
- Lamp size
- Under 1.7 lb (OPI Lightning)[2]
- Timers
- 15/30/60 s plus a flash-cure mode (Kiara Sky Lamp III)[1]
- Safety marks
- None named on Kiara Sky's Lamp III page[1]
- Warranty
- One-year limited warranty (Kiara Sky Lamp III)[1]
Watch out for
- SUNUV makes no cordless lamps. SUNUV says all of its nail lamps are corded (help article updated August 2026). Ask who makes any cordless lamp sold under that name.
- Retire damaged batteries. Health Canada advises against using lithium-ion batteries that are swollen, dented or damaged, and recommends the original charger.
- Match the charger. Health Canada says a replacement charger's output voltage must match the device's input and its current must be compatible.
- Battery-life claims can conflict on one page. Kiara Sky's rechargeable flash cure lamp page gives two different figures.
Compare with a full-hand lamp or a flash-cure lamp. Taking one on a trip? Read flying with rechargeable nail equipment.
Questions
Can I fly with a rechargeable nail lamp?
PHMSA says passengers can generally bring lithium-battery devices under FAA conditions and points travelers to the FAA PackSafe guidance. Check the current FAA and airline rules for your device.[4]