CNT-90 & CNT-90XL only

If your instrument was ordered with a built-in battery supply (Option 23/90), it contains 12 Li-Ion cells arranged as a fixed battery pack with internal protection circuitry.

Even though this type of cell does not cause environmental damage in the same way as NiCd, for instance, you should dispose of a worn-out battery pack at an authorized recy­cling station or return it to Spectracom.

Individual cells cannot be replaced.