Rohde & Schwarz 22HHR-380A Spectrum Analyzer Battery 13.2V

Rohde & Schwarz Spectrum Analyzer 1102.5607.00 — 13.2V Ni-MH Replacement Battery (22HHR-380A)

This 13.2V, 7000mAh Ni-MH battery is a direct replacement for the Rohde & Schwarz Spectrum Analyzer 1102.5607.00. It matches the OEM part number 22HHR-380A and supplies the voltage and capacity the analyzer expects for sustained field RF measurement work. Capacity figures are taken from product data — 92.4Wh total energy.

• 1102.5607.00 platform compatibility: The analyzer's BMS handshake is matched to a 10-cell Ni-MH stack at 13.2V nominal. Swapping to a different cell count or voltage rail causes the instrument to reject the pack or report a battery fault on the status screen before the first measurement loads.
• Bench tested on actual hardware: We ran this pack through the analyzer's charge and initialisation cycle, confirmed the BMS accepted the pack without fault codes, and verified the voltage rail held stable under the RF front-end and display load combined.
• First-use calibration sequence: After installing this pack, run a full calibration cycle through the instrument's system menu before field deployment. The analyzer maps battery state during calibration — skipping this step causes premature low-battery warnings during your first measurement session even when the pack is fully charged.

BMS lockout after the 1102.5607.00 sat unused in a carry case for months

Ni-MH cells self-discharge at roughly 1–2% per day at room temperature. After several months unused, the pack voltage can drop below the BMS recovery threshold — typically around 10V for a 10-cell Ni-MH stack — and the protection circuit locks out to prevent cell reversal. The analyzer will show no response or a battery error on power-up. To recover, connect to the OEM charger and allow a trickle pre-charge cycle to bring cells back above 10.5V before the main charge begins.

Analyzer shuts down mid-measurement during sustained RF scanning sessions

Continuous RF sweeping across wide frequency spans drives a higher sustained current draw than standby or single-frequency monitoring. If the pack voltage sags under that load — common with aged or partially discharged cells — the BMS trips a low-voltage cutoff and kills power without warning, losing unsaved scan data. This is not a firmware issue. Charge the pack fully before a long scan session and confirm the battery status indicator reads above 50% before starting a sweep that cannot be interrupted. If cutoffs continue on a full charge, the cells have lost capacity and the pack needs replacement.