Here's how to check if your finicky iPhone 6S battery needs to be replaced

UPDATE: Apple has updated the recall information page to include a built-in serial number checking tool. Rather than checking your number against the Q combinations we provided earlier, just head there and use the tool to determine if your iPhone 6S is eligible for trade-in. The original story follows below.

If your iPhone 6S has been plagued with power issues, never fear: Apple is offering battery replacements for the faulty devices.

The abrupt system shut-downs make it abundantly clear that something's not quite right, but when Apple addressed the issue and announced the global replacement program, it didn't provide an easy way to find out if your phone is affected.

Original image has been replaced. Credit: Mashable

Unless you really love your phone, it's probably extremely unlikely that you have its birthday marked on the calendar. Short of taking it all the way to the Apple Store and checking in there, Apple gives no easy way to know if your device is eligible for the replacement.

Thankfully 9to5Mac has compiled the list of serial numbers that Apple Store reps are using to identify the devices. To see if your 6S is possibly at risk, just check for yourself.

Locate your serial number one of two ways: look at the back of your phone (below the "S" icon) or go to Settings>General>About (Apple gives a more in-depth guide here). Once you have it, check if the two figures in the fourth and fifth position match any of these Q/number combinations:

Q3

Q4

Q5

Q6

Q7

Q8

Q9

QC

QD

QF

QG

QH

QJ

If you have a match, you should consider taking your phone in for replacement even if you haven't had any issues. Just be wary if your screen is in rough shape — Apple says any cracks or damage will need to be fixed before a battery replacement. If that's the case, you're really out of luck.