National ES2067 Epilator Replacement Battery 3.6V 680mAh

National ES2067 / ER-DGP74 / ER-DGP82 Series — 3.6V Li-ion Replacement Battery

This is a 3.6V Li-ion replacement cell rated at 680mAh (2.45Wh) for the National ES2067 epilator and related ER-DGP series models. It fits cordless epilators and personal grooming devices in this line that use the same slim cylindrical cell format. When the original cell loses hold time or stops taking a charge, this is the direct swap.

• ES2067, ER-DGP74, ER-DGP80, ER-DGP82 and 50+ variants: These models share a common 3.6V single-cell architecture with identical cell dimensions (56 × 14 × 14mm), the same connector orientation, and a BMS that expects a nominal 3.6V lithium cell — any deviation in chemistry or voltage triggers a protection fault at the PCB level.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the ER-DGP series platform. The BMS accepted the cell without fault, completed a full charge cycle, and the protection circuit tripped correctly at low-voltage cutoff with no thermal events recorded.
• Charging port care for waterproof models: Dry the charging port completely before connecting to the charger. Moisture bridging the charging contacts causes a BMS protection trip that the device reports as a dead battery rather than a charging error — the battery is fine, the port is not.

Capacity fade from daily partial charging on the ES2067

Most users charge the epilator every day before it fully depletes — a shallow-cycle pattern that causes lithium cells to lose calibration between the BMS state-of-charge counter and actual remaining capacity. Over weeks, the indicator reads full but the cell delivers noticeably less before cutoff. This is cell degradation, not a charger fault. Replacing the cell resets the cycle count and restores accurate indicator behaviour from the first full charge-discharge cycle on the new battery.

Motor speed drops mid-use before the low-battery indicator fires

A worn 3.6V lithium cell loses voltage faster under the motor's load than it does at rest. The device's indicator reads off resting voltage, so it can show two bars while the motor is already sagging to a level that reduces torque and pull speed. The BMS then triggers cutoff at minimum safe voltage — typically around 2.75V — which the user experiences as sudden shutdown with no warning. A new cell with full capacity holds the voltage rail stable under motor load and the indicator tracks correctly again.