Tektronix REI DPA-7000 Replacement Battery 11.1V 5200mAh

Tektronix REI DPA-7000 / TPS2000B Series — 11.1V Li-ion Replacement Battery

This 11.1V, 5200mAh lithium-ion pack replaces the original battery in the Tektronix REI DPA-7000 professional survey instrument and the TPS2000B series portable oscilloscopes, including the TPS2012B and TPS2014B. It shares the same voltage rail, connector footprint, and BMS handshake profile across these models. Capacity figure is 5200mAh (57.72Wh) as specified in the product data.

• REI DPA-7000 and TPS2000B series compatibility: These instruments share a common 11.1V three-cell architecture and the same physical connector pinout. The BMS on each model expects the same charge-termination voltage and protection thresholds, so one pack covers the entire group without firmware conflicts or indicator errors.
• Bench tested on actual hardware: We cycled this pack through probe module initialisation events and sustained sensor logging loads. The BMS held within spec at each power-up current spike and did not trip during continuous measurement draws across multiple charge cycles.
• First-use calibration on the DPA-7000: After installing, run a full calibration cycle through the instrument menu before heading into the field. The DPA-7000 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 DPA-7000 sat unused in a carry case for months

Lithium-ion cells self-discharge slowly during long storage. If the pack drops below roughly 2.5V per cell, the BMS enters a protective sleep state and the instrument will not power on or begin charging. This is not a dead pack — it is a protection circuit doing its job. Connecting the charger for 15–30 minutes at low current usually brings the cells above the recovery threshold, after which normal charging resumes. If the charger shows no activity at all, try a different known-good cable and adapter before concluding the pack is unrecoverable.

DPA-7000 shuts down mid-measurement with the battery indicator still showing charge

This happens when the cells can no longer hold voltage under the sustained current draw of active probe modules and RF front-end circuits, even though the resting voltage looked acceptable. The instrument's low-voltage cutoff triggers from the loaded voltage, not the idle reading the indicator sampled at power-on. A pack that reads 11.1V at rest may sag below the 9V cutoff threshold the moment sensor load kicks in. Replacing the pack and re-running the calibration cycle so the instrument re-maps the new cell curve will stop the unexpected shutdowns.