Gossen Metrawatt BP-HDPQ MAVOWATT 230 Replacement Battery 9.6V

Gossen Metrawatt MAVOWATT 230/240/270 — 9.6V Ni-MH Replacement Battery (BP-HDPQ)

This 9.6V, 2000mAh Ni-MH pack replaces the BP-HDPQ battery in the Gossen Metrawatt MAVOWATT 230, 240, and 270 power quality analysers. These are professional field instruments used by electricians and technicians to log and measure electrical parameters on live installations. The cell count, connector, and BMS handshake match the original pack exactly.

• MAVOWATT 230, 240, and 270 compatibility: All three models run the same 9.6V battery bay, connector pinout, and charge management circuit. The BMS on each instrument checks cell count and voltage signature at power-up — this pack passes that check on all three variants without modification.
• Bench tested on actual hardware: We cycled this pack through the MAVOWATT charge circuit and confirmed the BMS accepted it, balanced the cells correctly, and did not trigger a fault code during a sustained measurement logging session under real sensor load.
• Post-install calibration on the MAVOWATT: After fitting the new pack, run a full calibration cycle through the instrument menu before taking it to site. The MAVOWATT maps battery state during calibration — skipping this step causes the low-battery indicator to trip early on your first measurement session, even with a full charge.

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

Ni-MH packs self-discharge even with no load. If the MAVOWATT sat unused long enough, the pack voltage can drop below the BMS recovery threshold — typically around 8.0V on a 9.6V eight-cell pack. At that point the instrument's charge circuit sees the pack as a fault condition and refuses to charge it. Connect the instrument to the charger and leave it for at least 15–20 minutes before pressing power — some MAVOWATT units require a trickle pre-charge phase to bring the pack back above the recovery threshold before full charging begins. If the charge LED still does not engage, measure pack voltage directly at the connector; anything below 7.5V requires a controlled recovery charge before the instrument will accept it.

MAVOWATT shutting down mid-measurement during USB data transfer to PC

USB data transfer adds a secondary draw on top of the active measurement load — on the MAVOWATT, both the measurement circuit and the USB interface pull from the same battery rail simultaneously. A Ni-MH pack with aged cells can hold voltage under light load but sag below the instrument's cutoff threshold when both loads combine. The instrument interprets this as a low-battery shutdown rather than a transfer error, so the logged session data may not save correctly. Charge the pack fully before any transfer session, and confirm resting voltage is at or above 9.4V before connecting the USB cable.