Norelco 6828XL Replacement Battery 2.4V 2000mAh

Norelco 6828XL / 8831XL Series — 2.4V Ni-MH Replacement Battery

This is a 2.4V, 2000mAh Ni-MH replacement battery for the Norelco 6828XL, 6891XL, 7867XL, 8831XL, and compatible rotary shaver models. It replaces the original cell when the shaver no longer holds a charge or cuts out mid-use. Dimensions are 48.73 x 28.68 x 14.31mm — confirm fit against your existing cell before installing.

• Shared platform across these models: The 6828XL, 6891XL, 7867XL, and 8831XL run the same 2.4V motor rail and share an identical battery footprint and connector orientation. A single cell fits the whole group without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the 8831XL platform. The BMS accepted the cell without fault flags, and motor speed held steady through multiple full discharge cycles.
• Charging port dry-out before connecting: These shavers are rinseable. If you've cleaned yours under the tap, wait at least 30 minutes and shake out any water from the charging port before docking. Moisture bridging the charging contacts trips a BMS protection fault — the shaver reports it as a dead battery, not a water issue.

Capacity fade from daily partial charging on the Norelco rotary platform

Ni-MH cells in shavers degrade faster when charged daily without full depletion. The shaver's charge indicator calibrates against full cycle voltage curves — partial cycling causes the indicator to drift, showing full charge when actual capacity is well below 2000mAh. Over time, the cell voltage plateau shortens and the shaver cuts out sooner. Once a new cell is installed, run it through two full discharge-to-cutoff cycles before returning to daily top-up charging to reset the indicator baseline.

Shaver motor speed drops before the low-battery indicator activates

This is voltage sag under motor load — the cell can no longer sustain 2.4V when the rotary head engages thick beard growth, even though resting voltage reads normal. The BMS has not yet tripped, so the indicator stays green while performance falls off. It's a sign the original cell has lost internal capacity, not a dock or motor fault. Replacing the cell restores the voltage headroom needed to hold motor speed through a full grooming session.