K-pop Lightstick Batteries: AAA or AA? How Long Do They Last?

Quick answer: 3 × AAA alkaline batteries are common in current full-size K-pop lightsticks, but they are not universal. The exact version matters. TXT is a clear example: Official Light Stick Ver.2 uses 3 × AAA, while Ver.1 uses 2 × AA. Battery life also has no single K-pop-wide number: official specifications range from about 3 hours for TXT Ver.2 to different runtimes by mode on ENHYPEN Ver.2.

For concert day, the safest rule is simple: check your exact version, use a fresh set of the alkaline batteries specified by the maker, pack one spare set, and remove the batteries when you are done.

Which batteries does a K-pop lightstick use?

Do not buy batteries from the group name alone. Check the lightstick version printed on the box, manual, app or official product page. A new version can change the battery size even when the artist is the same.

These are version-specific examples, not a universal list. Always follow the manual for the lightstick you actually own.

How long do lightstick batteries last at a concert?

There is no reliable “all lightsticks last X hours” answer. Official figures vary by model and even by operating mode. TXT Ver.2 lists about 3 hours with new batteries, while ENHYPEN Ver.2 lists about 3 hours in normal mode and about 9 hours in performance mode. That is why a fixed claim such as “Bluetooth always cuts battery life in half” is misleading.

Venue control, brightness, flashing patterns, battery condition and the lightstick itself can all affect runtime. If an official concert notice tells you to use new batteries, follow that notice rather than relying on batteries left over from a previous show.

What should you bring on concert day?

• A fresh matching set: many official guides specifically call for new alkaline batteries.
• One spare set: NewJeans’ official concert guide explicitly recommends extras because weak batteries can cause dimming, wrong colors or shutdown.
• All batteries from the same set: do not mix old and new cells.
• The exact size your version needs: AAA and AA are not interchangeable.

For TXT, Weverse even states the version difference directly: Ver.2 requires three AAA batteries, while Ver.1 requires two AA batteries.

Remove the batteries after the concert

Do not store the lightstick for weeks or months with disposable batteries installed. TXT’s official product instructions warn that storing it with batteries may lead to leakage. ENHYPEN also says to remove the batteries when the product will not be used for an extended period, and aespa’s Fanlight Ver.2 says to remove batteries when not in use.

You do not need a dramatic chemical explanation: the practical rule is enough. Take the batteries out, keep the contacts dry, and store the lightstick separately.

What about CR2032 or other coin-cell batteries?

Mini and keyring-style products may use a different power system from the full-size lightstick. If yours uses a coin cell, check the exact CR number printed in its manual or battery compartment. Do not assume every mini uses CR2032, and do not buy a coin cell based only on the artist name.

Battery names when you are buying them abroad

If you are buying batteries near a venue, showing “AAA” or “AA” on your phone is usually clearer than trying to translate a brand name.