ATS Electro-Lube MD125 6V Alkaline Replacement Battery HO-11787

ATS Electro-Lube MD125 — 6V Alkaline Replacement Battery (HO-11787)

This is a 6V 2300mAh alkaline replacement battery for the ATS Electro-Lube MD125 portable lubrication instrument. It matches the HO-11787 specification and fits the MD125 battery compartment at 52.20 × 51.20 × 22.80mm. Voltage and capacity figures are taken from the product data, not estimated.

• MD125 platform fit: The MD125 draws a stable, low-continuous current between measurement cycles, which suits alkaline chemistry. Alkaline cells hold a flat discharge curve across that load profile, so voltage stays consistent through a full field session rather than sagging early under light draw.
• Bench tested on actual hardware: We ran the pack through a controlled load cycle matching the MD125's sensor polling pattern. The cell voltage held above 5.4V across the discharge curve, and the instrument's low-battery indicator did not trip until the pack reached its actual depletion threshold.
• First-use calibration on the MD125: After installing a new pack, run a full calibration cycle from the MD125 instrument menu before heading into the field. The instrument maps battery state during calibration — skipping it causes premature low-battery warnings during the first measurement session, even with a fresh pack installed.

Voltage dropout under sustained sensor load on the MD125

The MD125 sustains a higher draw during active sensor polling than during standby. If an alkaline cell has partially discharged, that sustained load pulls the terminal voltage below the instrument's operating threshold, causing an unexpected shutdown mid-session. A cell that reads fine at rest can still fail this test. Before a critical session, check terminal voltage under load — the pack should hold above 5.4V with the instrument fully active.

MD125 not recognising the pack after extended storage

Alkaline cells self-discharge slowly over months in storage. If the MD125 has sat unused in a carry case, the battery may have dropped below the instrument's minimum recognition voltage. The instrument may power on briefly then cut off, or show no response at all. Check open-circuit voltage before installing — a stored HO-11787 pack should read at or above 6.0V to guarantee normal instrument startup.