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Small rectangular lithium battery pack, dark finish, labelled 3.7V 260mAh

Estry

Estry Standard Battery for MM 450-X PX 360 PXC 310 BT BA-370PX 260mAh 3.7V

SKU CH-EEQB-DEZBN

Replacement lithium battery for MM 450-X, PX 360 and PXC 310 BT headsets, 260 mAh at 3.7 V

  • Battery pack size1-pack
  • Battery typeLithium
  • Battery capacity260 mAh
  • Battery voltage rating3.7
  • Product typeBatteries
  • Compatible replacement for MM 450-X, PX 360 and PXC 310 BT headsets
  • Matches original BA-370PX specifications for reliable performance
  • Built-in overcharge, over-discharge, over-voltage and short-circuit protection
  • Certified to ISO 9001, RoHS, CE, UN38.3 and MSDS standards
  • Compact 38.4 x 30.7 x 6.6 mm lithium cell weighing 34.0 g

Replacement Battery for MM 450-X PX 360 PXC 310 BT

This 3.7V lithium cell replaces the original BA-370PX pack in compatible headsets. It is built to the same electrical and mechanical specifications as the factory unit. The single-cell pack includes overcharge, over-discharge, over-voltage and short-circuit protection circuits. Buyers needing a different form factor or voltage should verify their device requirements before ordering.

Capacity and Runtime Headroom

The pack is rated at 260mAh and 1.0Wh, with a nominal voltage of 3.7V. This capacity supports typical listening sessions for the supported models before a recharge is required. Heavy users who demand all-day operation without access to a charger will find the runtime limited. The protection circuitry stops discharge before the cell reaches a critical low-voltage state.

Safety Certifications and Packaging

The battery carries ISO9001, RoHS, CE, UN38.3 and MSDS certifications, confirming compliance with international safety and environmental standards. It ships as a single 1-pack unit weighing 34.0g with dimensions of 38.4 x 30.7 x 6.6mm. No charging cable, dock or additional accessories are included in the package.

How it compares

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

Price $13.99
Pricier than about 63% of the 10,440 comparable items (median $10.99).

Specifications

Product
Product typeBatteries
Power
Battery typeLithium
Battery capacity260 mAh
Battery voltage rating3.7
In the box
Battery pack size1-pack

Questions about this item

Will this 260mAh 3.7V lithium pack fit my PX 360 headset without modification?

It matches the original BA-370PX dimensions of 38.4 x 30.7 x 6.6mm and is listed as compatible with the PX 360 model.

How can I confirm the 1.0Wh cell is charging correctly after installation?

The built-in protection circuit prevents overcharge and over-discharge; normal operation shows steady voltage rise to 3.7V during charge.

Does the single pack include the connector for MM 450-X or must I reuse the old one?

The 1-pack battery is made to original specifications with the same connector layout, so no separate cable is required.

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