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Rectangular lithium battery pack with flat silver finish and wire connector visible

Estry

Estry PK201 standard battery 3.7V 1400mAh 1-pack

SKU CH-J34W-QP99E MPN PK201

Lithium replacement battery delivers 3.7V and 1400mAh for PK201 and PK301 models

  • TypeBatteries
  • Battery Pack1-pack
  • Battery TypeLithium
  • Battery Capacity1400mAh
  • Battery Voltage3.7
  • Lithium power rated 3.7V 1400mAh for extended runtime
  • Exact-fit replacement for PK201 and PK301 devices
  • Built-in overcharge over-discharge over-voltage and short-circuit protection
  • Certified to ISO9001 RoHS CE UN38.3 and MSDS standards
  • Slim 65.0 x 38.5 x 5.5mm profile at 50.0g weight

Compatible Replacement Battery

The Estry PK201 is a single lithium cell rated at 3.7 volts and 1400 milliampere-hours. It matches the original dimensions of 65.0 by 38.5 by 5.5 millimetres and weighs 50.0 grams. The pack carries ISO 9001, RoHS, CE, UN 38.3 and MSDS certifications. Built-in protection guards against overcharge, over-discharge, over-voltage and short circuits.

Upgrade From Degraded Original Cells

This battery replaces part numbers 46.8CU01G001 and BBPK3ALIS used in PK201 and PK301 devices. The swap is worthwhile when the original cell no longer holds a useful charge or shows swelling. It restores the factory 5.0 watt-hour capacity without requiring hardware modifications. Users should verify the exact model and part number before ordering.

Single-Cell Lithium Constraints

The 3.7 volt nominal voltage is fixed by the chemistry and cannot be combined for higher voltages. Capacity is limited to the stated 1350 to 1400 milliampere-hour range for this form factor. No charging circuitry is included; the host device must manage charge termination and temperature monitoring. The cell is not designed for high-drain applications beyond its rated specifications.

Highlights

  • Lithium power rated 3.7V 1400mAh for extended runtime
  • Exact-fit replacement for PK201 and PK301 devices
  • Built-in overcharge over-discharge over-voltage and short-circuit protection
  • Certified to ISO9001 RoHS CE UN38.3 and MSDS standards
  • Slim 65.0 x 38.5 x 5.5mm profile at 50.0g weight

Specifications

TypeBatteries
Battery Pack1-pack
Battery TypeLithium
Battery Capacity1400mAh
Battery Voltage3.7

Questions about this item

What are the dimensions of the Estry PK201 battery?

The battery measures 65.0 x 38.5 x 5.5mm and weighs 50.0g, designed to fit devices requiring the PK201 or PK301 form factor.

How do I install the Estry PK201 battery correctly?

Power off the device, open the battery compartment, align the connector with the terminals matching the original 46.8CU01G001 orientation, and secure the cover.

When should I replace the Estry PK201 battery?

Replace it when runtime drops significantly or the 1400mAh lithium cell no longer holds a charge, typically after several hundred cycles.

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