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Flat rectangular lithium battery pack 154.5 x 73.0 x 3.2 mm light finish

Estry

Estry 4500 mAh battery for Iconia One 8 B1-850 A6001 B1-850-K35X PR-2874E9G

SKU CH-SPNP-WK2Q4

Lithium replacement battery with 4500mAh capacity and built-in protection for compatible Acer Iconia One 8 tablets

  • Battery pack size1-pack
  • Battery typeLithium
  • Battery capacity4,500 mAh
  • Battery voltage rating3.8
  • Product typeBatteries
  • 4500 mAh capacity supports extended use between charges
  • 8 V lithium cell matches original voltage specification
  • 5 x 73.0 x 3.2 mm form factor fits the Iconia One 8 B1-850
  • ISO9001, RoHS, CE, UN38.3 and MSDS certified for safety compliance
  • 0 g weight keeps the tablet light and portable

Direct replacement for Iconia One 8 tablets

This Estry battery fits the Iconia One 8 B1-850, A6001 and B1-850-K35X models and replaces part number PR-2874E9G. It is a single lithium cell rated at 4500mAh and 3.8V, matching the original factory specifications. Built-in protection guards against overcharge, over-discharge, over-voltage and short circuits. The pack measures 154.5 x 73.0 x 3.2mm and weighs 106.0g.

4500mAh capacity with 17.1Wh energy rating

The cell delivers 4500mAh at 3.8V for a total of 17.1Wh, providing a full day of typical tablet use on a single charge. Capacity will gradually decline after several hundred charge cycles, and heavy workloads such as continuous video playback will drain it faster. Safety certifications include ISO9001, RoHS, CE, UN38.3 and MSDS. It is not suited for users who need extended runtime beyond the original design or who require a higher-capacity alternative.

Exact mechanical and electrical match for PR-2874E9G

The battery is manufactured to the same dimensions, voltage and connector layout as the original Acer part, so it fits the battery compartment without modification. Buyers must verify their tablet model and the PR-2874E9G part number before ordering, as the cell is not compatible with other Iconia or Acer devices. No installation tools or adapters are included in the pack.

How it compares

Measured against everything we stock in Household Batteries & Chargers, at today’s prices. Recalculated every night.

Price $19.99
Pricier than about 76% of the 10,440 comparable items (median $10.99).

Specifications

Product
Product typeBatteries
Power
Battery typeLithium
Battery capacity4,500 mAh
Battery voltage rating3.8
In the box
Battery pack size1-pack

Questions about this item

Will the 4500 mAh battery fit the Iconia One 8 B1-850 chassis without modification?

The pack measures 154.5 x 73.0 x 3.2 mm and weighs 106.0 g, matching the original PR-2874E9G dimensions for the B1-850 series.

How can I verify the 3.8 V cell is charging correctly after installation?

The tablet should display a steady charge indicator and reach full capacity within the normal cycle time; the built-in protection board prevents overcharge and over-discharge.

Does the single 4500 mAh pack include any tools or adhesive strips for the B1-850-K35X repair?

Only the lithium battery cell is supplied; opening tools and replacement adhesive must be sourced separately.

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