155 066 Battery Li-ion, for PIPETBOY acu 2 (instruments with serial number from ≥1350001) Part no
153 005 9 V NiMH battery, for PIPETBOY acu (instruments with serial number below ≤1350000) WARNING: Batteries are not compatible Distinctive features between the two PIPETBOY acu generations: PIPETBOY acu 2 Serial number ≥1350001 LED battery indicator: Inactive/unpowered: White In Operation: Red/green PIPETBOY acu Serial number ≤1350000 LED battery indicator: Inactive/unpowered: Red In Operation: Red only