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Rectangular lithium-ion battery pack, black plastic casing, gold contacts visible

Cameron Sino Battery Altec Lansing iMW577 5200mAh 3.7V

SKU CH-YXA7-HR0C3

Replacement lithium-ion battery for Altec Lansing iMW577 speakers, 5200mAh at 3.7V with a fully decoded chip and built-in protection circuits

  • Battery pack size66.2 × 37.1 × 19.1
  • Battery capacity5,200 mAh
  • Battery voltage rating3.7 V
  • Details66.2 × 37.1 × 19.1
  • 5200 mAh capacity powers Altec Lansing iMW577 speaker longer
  • 7 V lithium-ion cell matches original voltage exactly
  • 20 × 37.10 × 19.10 mm fits battery compartment precisely
  • ISO 9001, RoHS and CE certified for safety compliance
  • New fully decoded chip works like the original battery

Replacement for Altec Lansing iMW577 Speaker

This lithium-ion battery pack replaces the original power source in Altec Lansing iMW577 and iMW577-AB portable speakers. It matches the factory specifications with a 5200mAh capacity at 3.7 volts. The pack uses an INR18650-2S cell configuration and includes a fully decoded chip for proper communication with the speaker electronics. Physical dimensions are 66.20 x 37.10 x 19.10 mm with a weight of 94.2g.

Upgrade from depleted or failing original cell

The jump is worth it when the speaker no longer holds a charge or shuts down unexpectedly during playback. A fresh pack restores the original runtime and enables the device to reach its full volume potential again. Installation is straightforward with many guide videos available online. The new cell requires two or three complete charge cycles to reach optimal performance.

Limits of the 3.7V lithium-ion standard

Capacity will gradually decrease over hundreds of charge cycles regardless of brand. The pack must not be disassembled, exposed to fire, submerged in water, or stored above 60°C (140°F). Using a low-quality charger can shorten the overall lifespan. Protection circuits guard against overcharge, over-discharge, over-voltage and short circuits, but physical damage voids these safeguards.

How it compares

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

Price $14.99
Pricier than about 67% of the 10,440 comparable items (median $10.99).

Specifications

Product
Brand nameCameron Sino
Model nameiMW577, iMW577-AB
Part numberINR18650-2S
Power
Battery capacity5,200 mAh
Battery voltage rating3.7 V
In the box
Battery pack size66.2 × 37.1 × 19.1

Questions about this item

Will the 66.20 x 37.10 x 19.10 mm pack fit the Altec Lansing iMW577 speaker?

Yes, those exact dimensions match the original INR18650-2S battery compartment.

What is the common mistake when connecting the replacement battery?

Not fully seating the connector so the decoded chip cannot communicate with the speaker.

How often will the 5200 mAh lithium-ion cell need replacing?

After several hundred charge cycles capacity drops noticeably; expect a swap every few years.

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