About this replacement
Dranetz DBPX108 / DBPG106 Series — 7.2V Ni-MH Replacement Battery (117009-G1)
This is a 7.2V 3000mAh Ni-MH replacement battery for the Dranetz DBPX108, DBPG106, DBPV500, and DBPV10 power quality analyzers. It carries OEM part numbers 117009-G1 and BP-PX5. These are portable field instruments used by electricians and engineers to log voltage, harmonics, and power quality on live electrical systems.
- DBPX108 / DBPG106 platform fit: These models share the same 7.2V battery rail, physical form factor, and connector pinout. The BMS handshake protocol is identical across the range, so one cell configuration covers the full platform without firmware conflicts.
- Bench tested on actual hardware: We cycled this pack through the DBPX108 under sustained logging load with active probe channels. The BMS held charge delivery stable across the full session without a mid-measurement cutoff event.
- Calibration cycle before first field deployment: After fitting this pack, run a full calibration cycle through the instrument's menu before taking it to site. The DBPX108 maps battery state during that routine — skip it and the instrument will throw premature low-battery warnings partway through your first measurement session.
DBPX108 shutting down mid-measurement with no warning
When multiple probe channels initialise simultaneously, the current spike at startup can exceed the BMS protection threshold on a weakened or partially discharged cell. The BMS interprets this as an overload event and cuts the pack before the instrument logs a low-voltage warning. This is not a firmware fault — it is the protection circuit doing its job on a cell that can no longer absorb the transient. A fresh pack at full charge handles the startup spike without tripping. Charge to full before any multi-channel session.
DBPX108 not recognising a new pack after long storage
Ni-MH cells self-discharge during storage. If the pack voltage drops below roughly 5.5V, the BMS enters sleep mode and the instrument will not power on or show a charge state at all. The pack is not dead — it needs a recovery charge. Place it in a Ni-MH compatible charger and run a trickle charge at 100mA for 30–60 minutes to wake the BMS before attempting a normal charge cycle. Once voltage recovers above 6V, standard charging resumes normally.