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Rectangular lithium battery pack, dark finish, 78 by 40 by 19 millimetres

Estry

Estry S-00171 standard battery 7.4V 3000mAh

SKU CH-JWC0-A99P2 MPN S-00171

Lithium replacement battery rated 7.4 V, 3000 mAh for MegaBlast and Megaboom 3 speakers

  • Battery pack size1-pack
  • Battery typeLithium
  • Battery capacity3,000 mAh
  • Battery voltage rating7.4
  • Product typeBatteries
  • Replacement-ready for MegaBlast and Megaboom 3 speakers
  • 4 V lithium cell delivers 3000 mAh capacity
  • Built-in protection against overcharge, over-discharge and short circuit
  • Compact 78.4 × 40.4 × 19.0 mm form factor fits original bay
  • Certified to ISO 9001, RoHS, CE, UN 38.3 and MSDS standards

Direct Replacement Battery

The Estry S-00171 is a lithium battery pack rated at 7.4V and 3000mAh. It is built to match the original specifications for compatible portable speakers. The pack includes overcharge, over-discharge, over-voltage and short-circuit protection circuits. It holds certifications including ISO9001, RoHS, CE, UN38.3 and MSDS.

For Speaker Owners Needing a Fresh Cell

This battery suits owners of MegaBlast or Megaboom 3 models looking to restore original run time. It fits the specific part numbers 084-000845, 984-001362 and 533-000146. Buyers with different speaker models or different battery part numbers should look elsewhere. Verifying the exact model code before ordering is essential.

Voltage and Capacity Match

The decisive specification is the 7.4V nominal voltage combined with the 3000mAh capacity. These two figures must match the original battery label exactly for the speaker to charge and operate correctly. The physical dimensions of 78.4 x 40.4 x 19.0mm and weight of 172.0g follow from this electrical specification.

How it compares

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

Price $23.99
Pricier than about 81% of the 10,440 comparable items (median $10.99).

Specifications

Product
Product typeBatteries
Power
Battery typeLithium
Battery capacity3,000 mAh
Battery voltage rating7.4
In the box
Battery pack size1-pack

Questions about this item

Which battery capacity matches the 3000mAh or 3400mAh listing for my Megaboom 3?

The pack is rated at 3000mAh in the specification table and 3400mAh in the manufacturer highlights; both refer to the same 7.4V lithium cell, so either figure represents the single replacement option for the speaker.

What does the 7.4V rating deliver in the speaker?

The 7.4V nominal voltage matches the original battery, providing the correct power level for the Megaboom 3 and MegaBlast without modification.

What connector standard does this pack use and what does it limit?

The battery uses the proprietary connector required by the Megaboom 3 and MegaBlast, limiting installation to those compatible speaker models listed in the part numbers.

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