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Rectangular lithium battery pack, dark casing, labelled 7.4V 7500mAh

Estry

Estry SRS-XB40 standard battery 7500mAh 7.4V

SKU CH-A2AX-ZVB56 MPN SRS-XB40

Replacement lithium battery delivers 7500mAh at 7.4V for SRS-XB40 and SRS-XB41 speakers

  • Battery pack size1-pack
  • Battery typeLithium
  • Battery capacity7,500 mAh
  • Battery voltage rating7.4
  • Product typeBatteries
  • Replaces original battery in SRS-XB40 and SRS-XB41 speakers
  • 7500 mAh lithium cell delivers 7.4 V for extended playtime
  • Built-in protection against overcharge, over-discharge, over-voltage and short circuit
  • Certified to ISO 9001, RoHS, CE, UN 38.3 and MSDS standards
  • Compact 67.94 × 37.58 × 37.02 mm pack weighs 260.0 g

Replacement lithium battery pack

The Estry SRS-XB40 is a 7500 mAh lithium replacement battery rated at 7.4 V. It matches the original specifications and includes overcharge, over-discharge, over-voltage and short-circuit protection. The pack measures 67.94 x 37.58 x 37.02 mm and weighs 260.0 g. It is supplied as a single unit in new condition.

Compatibility and fit

This battery suits owners of the SRS-XB40 or SRS-XB41 speakers who need a direct replacement for part numbers JD770B, ID770 or ID659B. It is not for buyers whose device uses a different battery model or voltage. Users requiring a higher capacity than 7500 mAh or a different form factor should look elsewhere.

Capacity and voltage

The decisive specification is the 7500 mAh capacity at 7.4 V, which determines run-time and compatibility with the charging circuit. A different capacity or voltage will not work in the supported speakers.

How it compares

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

Price $24.99
Pricier than about 82% of the 10,440 comparable items (median $10.99).

Specifications

Product
Product typeBatteries
Power
Battery typeLithium
Battery capacity7,500 mAh
Battery voltage rating7.4
In the box
Battery pack size1-pack

Questions about this item

How long will the 7500 mAh capacity run a speaker in daily use?

The 7500 mAh rating at 7.4 V gives 50.32 Wh, matching the original pack so playback time is the same as when the speaker was new.

What does the 7.4 V rating mean for charging and device safety?

It is the nominal voltage the speaker expects; the built-in protection circuit guards against overcharge, over-discharge, over-voltage and short circuits.

Will the 67.94 × 37.58 × 37.02 mm pack fit the SRS-XB40 battery compartment?

Yes, those are the exact original dimensions and the 260.0 g weight matches the factory battery, so it seats without modification.

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