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Rectangular lithium battery pack 51.72 by 34.63 by 3.52 mm in light finish

Estry

Estry NWZ-S738 standard battery 650mAh 3.7V

SKU CH-DCZ3-A2NRH MPN NWZ-S738

Replacement lithium battery rated 650 mAh at 3.7 V for compatible Sony Walkman models

  • TypeBatteries
  • Battery Pack1-pack
  • Battery TypeLithium
  • Battery Capacity650mAh
  • Battery Voltage3.7
  • Replaces original battery in 11 compatible Sony models
  • 650mAh lithium cell delivers 2.78Wh of reliable power
  • Built-in protection guards against overcharge and short circuit
  • Certified to ISO9001, RoHS, CE, UN38.3 and MSDS standards
  • Slim 51.72 x 34.63 x 3.52mm design weighs only 39.0g

Direct replacement for Sony Walkman players

The Estry NWZ-S738 is a lithium-ion cell built to match the original 650mAh 3.7V specification for models including the NWZ-S738, NWZ-A728, NWZ-A828 and NWZ-A720 series. It restores runtime on devices that no longer hold a charge.

Simple swap with built-in protection

The pack fits the existing battery compartment without soldering or adapters. Overcharge, over-discharge, over-voltage and short-circuit protection circuits are integrated. The main risk is ordering the wrong variant; verify the exact model number or part number before purchasing.

650mAh capacity for daily playback

At 2.78Wh the cell delivers a full day of typical audio use on a single charge. It is not suited for extended video playback or users who need multi-day autonomy without recharging. Heavy users should plan for a mid-day top-up.

Highlights

  • Replaces original battery in 11 compatible Sony models
  • 650mAh lithium cell delivers 2.78Wh of reliable power
  • Built-in protection guards against overcharge and short circuit
  • Certified to ISO9001, RoHS, CE, UN38.3 and MSDS standards
  • Slim 51.72 x 34.63 x 3.52mm design weighs only 39.0g

Specifications

TypeBatteries
Battery Pack1-pack
Battery TypeLithium
Battery Capacity650mAh
Battery Voltage3.7

Questions about this item

How do I know the Estry NWZ-S738 battery is working after I install it?

The device should power on and hold a charge for the expected runtime. The built-in overcharge, over-discharge, over-voltage and short-circuit protection circuits will operate automatically.

What comes in the box and what must I buy separately?

The package contains one 650 mAh 3.7 V lithium battery pack weighing 39.0 g and measuring 51.72 x 34.63 x 3.52 mm. No tools, adhesives or chargers are included.

Which version should I choose for my player?

Match the exact model number on your device — NWZ-S738, NWZ-A729BLK, NWZ-A828, NWZ-A728, NWZ-A826, NWZ-S738F, NWZ-A720, NWZ-A829, NWZ-A726, NWZ-S738FBNC or NWZ-820 — or the original part number 1-756-702-12, LIS1374HNPA, 1-756-702-11, 8315A32402 or 8917A44167.

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