Will CR2430 work in place of CR2412?

Same 24.5 mm diameter, but 3 mm tall instead of 1.2 mm. Only if the holder fits; thinner cells can lose contact.

Will CR2450 work in place of CR2412?

Same 24.5 mm diameter, but 5 mm tall instead of 1.2 mm. Only if the holder fits; thinner cells can lose contact.

No. Rechargeable Li-ion: 3.6-4.2 V and far less capacity; only for devices built for it.

CR2412 is a 3 V lithium cell with a typical capacity of 100 mAh.

24.5 mm across and 1.2 mm thick.

CR2412 is sold under that code alone in this chart; no other cell here is 24.5 × 1.2 mm at 3 V.

CR2412 at actual relative size: 24.5 mm across, 1.2 mm thick. The dashed circle is a US quarter, 24.26 mm across (US Mint coin specifications).

Same diameter, different thickness. These are not drop-in replacements.

Cell	Size	Verdict
CR2430	24.5 × 3 mm	Same 24.5 mm diameter, but 3 mm tall instead of 1.2 mm. Only if the holder fits; thinner cells can lose contact.
CR2450	24.5 × 5 mm	Same 24.5 mm diameter, but 5 mm tall instead of 1.2 mm. Only if the holder fits; thinner cells can lose contact.
CR2477	24.5 × 7.7 mm	Same 24.5 mm diameter, but 7.7 mm tall instead of 1.2 mm. Only if the holder fits; thinner cells can lose contact.

These are the same size or a similar code, and they are not equivalents.

LIR2412
Rechargeable Li-ion: 3.6-4.2 V and far less capacity; only for devices built for it.

Will CR2430 work in place of CR2412?: Same 24.5 mm diameter, but 3 mm tall instead of 1.2 mm. Only if the holder fits; thinner cells can lose contact.
Will CR2450 work in place of CR2412?: Same 24.5 mm diameter, but 5 mm tall instead of 1.2 mm. Only if the holder fits; thinner cells can lose contact.
Can I use LIR2412 instead of CR2412?: No. Rechargeable Li-ion: 3.6-4.2 V and far less capacity; only for devices built for it.
What voltage is CR2412?: CR2412 is a 3 V lithium cell with a typical capacity of 100 mAh.
What size is CR2412?: 24.5 mm across and 1.2 mm thick.