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Small rectangular lithium battery pack, flat silver finish, 27.5 by 26.0 by 5.7mm

Estry

Estry Standard Battery 350mAh for GSP 350 500 670 AHB552826TPC-2

SKU CH-8YK2-X8VTA

Lithium replacement battery rated 3.7 V and 350 mAh fits GSP 350, 500 and 670 headsets

  • Battery pack size1-pack
  • Battery typeLithium
  • Battery capacity300 mAh
  • Battery voltage rating3.7
  • Product typeBatteries
  • Compatible with GSP 350, 500 and 670 headsets
  • 350 mAh capacity delivers 1.3 Wh of energy
  • 7 V lithium cell matches original voltage spec
  • Built-in overcharge, over-discharge and short-circuit protection
  • Certified to ISO 9001, RoHS, CE and UN 38.3 standards

Replacement Battery for GSP Headsets

This lithium battery replaces the original pack in GSP 350, GSP 500 and GSP 670 headsets. It delivers a nominal 3.7V and 350mAh capacity with a 1.3Wh energy rating. The cell measures 27.5 by 26.0 by 5.7mm and weighs 32.6g. It is sold as a single unit.

Verify Model and Part Number First

Match your headset model to the supported list: GSP 350, GSP 500 or GSP 670. Confirm the original battery part number AHB552826TPC-2 on the label inside the earcup. The connector and pin layout must match the original exactly. Dimensions and voltage are fixed and cannot be adapted.

Certified Protection Circuit Included

The pack integrates overcharge, over-discharge, over-voltage and short-circuit protection to maintain safe operation. It carries ISO9001, RoHS, CE, UN38.3 and MSDS certifications for quality and transport compliance. No additional software or accessories are bundled with this battery.

How it compares

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

Price $9.99
Cheaper than about 60% of the 10,440 comparable items (median $10.99).

Specifications

Product
Product typeBatteries
Power
Battery typeLithium
Battery capacity300 mAh
Battery voltage rating3.7
In the box
Battery pack size1-pack

Questions about this item

Does the package contain only the battery or are tools and adhesives included?

The pack supplies one lithium cell measuring 27.5 x 26.0 x 5.7 mm and weighing 32.6 g; no tools or adhesive strips are mentioned.

The title says 350 mAh but the specifications list 300 mAh — which capacity should I trust?

The manufacturer highlights quote 350 mAh and 1.3 Wh at 3.7 V, while the specification table shows 300 mAh; both figures come from the supplier data.

Will the 1.3 Wh rating deliver noticeably longer talk time in a GSP 670 headset?

At 3.7 V and 350 mAh the cell stores 1.3 Wh, matching the original AHB552826TPC-2 specification for the GSP 350, 500 and 670 models.

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