Remington R-9200 Replacement Battery 2.4V 2000mAh Ni-MH

Remington R-9200 Series — 2.4V Ni-MH Replacement Battery

This is a 2.4V, 2000mAh Ni-MH replacement battery for the Remington R-9200 and related rotary shavers. It fits the R-600, R-9170, and R-9190, plus over 25 additional Remington shaver models that share the same battery bay dimensions and voltage rail. Swap it in when the original cell no longer holds enough charge to finish a shave.

• R-9200 series compatibility: These models share a common 2.4V two-cell Ni-MH configuration, matching connector orientation, and identical physical footprint — 48.73 × 28.68 × 14.31mm. The motor control circuit expects this voltage range; substituting a different chemistry trips the protection circuit.
• Bench tested on actual hardware: We cycled this battery through the Remington dock charger and confirmed the BMS accepted the charge without fault codes. Motor engagement at full charge produced consistent torque through the discharge curve without early cutoff.
• Dock contact care for waterproof models: After rinsing the shaver head under water, dry the underside charging contacts with a cloth before placing it in the dock. Moisture bridging those two contacts causes the BMS to log a protection fault — the shaver reports a dead battery when the actual problem is a wet connection.

Capacity fade from daily partial charging on the R-9200

Ni-MH cells in shavers degrade faster when they are topped off daily without being fully discharged first. The charge controller in the R-9200 dock uses a delta-V cutoff to detect full charge — but a partially depleted cell produces a shallower voltage peak, so the controller sometimes terminates early. Over months, the usable capacity window narrows and the indicator drifts out of sync with actual charge state. Letting the battery run down to the low-battery indicator before docking resets this drift.

Motor speed drops mid-shave before the indicator shows low

This happens because the R-9200 motor draws a short current spike each time it engages dense stubble. Under that load, a degraded Ni-MH cell sags below 2.0V momentarily — enough for the motor driver to throttle back, but not enough to trigger the low-battery indicator. The indicator is tied to resting voltage, not load voltage, so it still reads mid-charge. A new cell with lower internal resistance maintains voltage above 2.1V under the same load and eliminates the speed drop.