Moser Easy Style 1881 Replacement Battery 1.2V 2000mAh

Moser Easy Style 1881 / ChroMini 1591 Series — 1.2V Ni-MH Replacement Battery (1852-7531)

This is a 1.2V, 2000mAh Ni-MH replacement battery for the Moser Easy Style 1881 and ChroMini 1591 series shavers. It slots directly into the battery housing and restores cordless cutting power when the original cell can no longer hold adequate charge. OEM part numbers covered: 1852-7531 and 1590-7291.

• Easy Style 1881 and ChroMini 1591 compatibility: Both device lines share the same 1.2V single-cell Ni-MH architecture and use the same physical form factor — 52.90 × 14.30 × 14.30mm. The BMS in each shaver expects a Ni-MH cell at this voltage, so swapping chemistry or voltage causes charging faults immediately.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the Easy Style 1881 platform. The shaver's charging circuit accepted the cell cleanly, voltage climbed correctly through the charge curve, and the BMS terminated charge at full capacity without thermal events.
• Charging port hygiene after rinsing: The Easy Style 1881 is used near water. After rinsing the shaver head, let the unit air dry for at least 15 minutes before placing it on the charging cradle. Moisture sitting on the charging contacts bridges them, which the device reads as a BMS protection fault — not a low battery.

Capacity fade from daily partial charging on the Easy Style 1881

Ni-MH cells in shavers are vulnerable to voltage depression when repeatedly charged before they are meaningfully discharged. The Easy Style 1881 is typically charged every day regardless of actual use — each partial cycle trains the cell to treat a lower state of charge as "full." Over months, the indicator shows full charge but the motor slows noticeably within the first pass. Running the battery down fully before the next charge, two or three times after fitting this replacement, resets the cell's capacity baseline and stabilises indicator accuracy.

Shaver motor slows mid-use while indicator still shows charge remaining

This is voltage sag under motor load — not a dead battery. When the Ni-MH cell drops below roughly 1.0V under the draw of the cutting motor, the shaver's circuit reduces power to protect the motor, even if the LED indicator has not yet flagged low battery. A degraded original cell hits this threshold early in a session. Fitting a fresh 2000mAh cell raises the usable voltage window, so the motor holds speed across a full grooming session before sag occurs. If the problem persists after fitting this replacement, check that the battery contacts inside the housing are clean and making firm contact.