Remington Micro 3 Replacement Battery 1.2V 1800mAh

Remington Micro 3 / R6130 — 1.2V Ni-MH Replacement Battery

This is a 1.2V, 1800mAh Ni-MH replacement battery for the Remington Micro 3 and R6130 electric shavers. It restores cordless operation to the rotary cutting head and motor when the original cell has lost charge capacity. Voltage and chemistry match the original to keep the motor drive circuit within spec.

• Micro 3 and R6130 compatibility: Both models share the same compact motor housing, 1.2V cell rail, and charge management circuit. One cell replaces the other without modification to the contact strip or BMS handshake.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the Micro 3 platform. The onboard charge circuit accepted the cell without fault, and the BMS reached full cutoff voltage cleanly on each cycle.
• Post-rinse drying before charging: If you rinse the shaver head under a tap, dry the charging port and base contacts fully before docking. Moisture bridging the charging contacts can trigger a BMS protection fault that the shaver reports as a dead battery — not a charging error. Let it air-dry for 20 to 30 minutes before connecting power.

Capacity fade from daily partial charging on the Micro 3

Ni-MH cells in shavers are susceptible to voltage depression when repeatedly charged before the cell is close to depleted. The Micro 3's charge circuit does not run an active discharge cycle before topping up, so partial charges accumulate and the cell's usable voltage window narrows over time. The shaver's indicator then trips the low-voltage cutoff earlier in the discharge curve than it should. Replacing the cell resets this — but avoid putting it back on charge after every single use.

Motor drops speed mid-shave before the indicator shows low

This is voltage sag under motor load, not a dead battery. As a Ni-MH cell ages, its internal resistance rises, causing the terminal voltage to dip sharply when the motor draws current on a dense pass. The BMS reads that dip as a low-cell condition and reduces power to the motor before the capacity indicator has moved. A fresh cell with lower internal resistance holds the voltage rail steady under the same load. If the replacement cell shows the same behaviour after a full charge cycle, check that the contact strip is clean and seated flat against the cell terminals.