GE Druck DPI 611 Compatible Battery 3.7V 4000mAh Li-Polymer

GE Druck DPI 611 / DPI 612 Series — 3.7V Li-Polymer Replacement Battery (CC3800GE)

This is a 3.7V 4000mAh Li-Polymer replacement battery for the GE Druck DPI 611 and DPI 612 series portable pressure calibrators, including the DPI 612 Flex. It matches OEM part number CC3800GE and fits directly into the battery bay without modification. Capacity is 4000mAh (14.8Wh) — identical to the factory specification.

• DPI 611, DPI 612, and DPI 612 Flex compatibility: All three instruments share the same battery bay dimensions, connector pinout, and BMS handshake protocol. The 3.7V supply rail and communication lines are identical across the platform, so one battery covers all three variants.
• Bench tested on actual hardware: We cycled this pack through instrument power-on, pressure measurement, and USB data transfer simultaneously. The BMS held stable through the combined load spike at sensor initialisation and did not trip during sustained logging sessions.
• Post-install calibration cycle: After fitting this battery, run a full calibration cycle through the DPI instrument menu before field deployment. The DPI 611 and 612 map battery state during calibration — skipping this step causes the instrument to report premature low-battery warnings on the first measurement session in the field.

DPI 611 BMS lockout after the pack sat unused in a carry case for months

Li-Polymer cells self-discharge slowly in storage. If the DPI 611 sits unused long enough, the cell voltage drops below the BMS protection threshold — typically around 2.5V per cell — and the BMS latches into a sleep state. At that point, the instrument will not power on and the charger shows no activity. The recovery step is to connect the charger and leave it for 20–40 minutes without expecting an immediate response. Once cell voltage climbs back above the BMS wake threshold (approximately 2.8–3.0V), the BMS exits sleep mode and normal charging resumes.

DPI 611 shutting down mid-measurement with the battery indicator still showing charge

This happens when the cell voltage sags under the sustained current draw of active pressure sensing combined with display backlight — even if the resting voltage looked fine before the session started. An aged or partially discharged cell can sit at an apparently healthy open-circuit voltage, then collapse under load when the sensor module pulls current. The instrument's under-voltage protection then cuts power before the display percentage reaches zero. Fit a fresh pack, run the calibration cycle through the instrument menu, and confirm the display holds a steady voltage reading during a live pressure measurement before returning the unit to service.