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Sony NW-A2000 Walkman Replacement Battery 3.7V 750mAh

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From $23.99 USD $29.99
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Fits Sony NW-A2000 and NW-HD3 Walkman players; replaces OEM part LIS1317HNP.
3.7V, 750mAh Li-Polymer chemistry delivers 2.78Wh for full-length album playback on compact players.
Connector seats flush into the battery slot with a single locking tab — orientation is keyed.
We bench-tested the BMS on a discharged unit; voltage ramped clean from 2.8V to 4.2V with no fault cutoff.
After install, connect the charger and let it sit for 30 minutes before powering on — the NW-A2000 enters protection mode after storage and needs a slow trickle to wake the fuel gauge.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

3.7V

Amp

750mAh

Sony NW-A2000 / NW-HD3 — 3.7V Li-Polymer Replacement Battery (LIS1317HNP)

This is a 3.7V, 750mAh Li-Polymer replacement battery for the Sony NW-A2000 and NW-HD3 Walkman digital audio players. It matches the OEM part number LIS1317HNP and fits the slim profile of both players. Capacity is drawn directly from the product spec — 750mAh / 2.78Wh.

  • NW-A2000 and NW-HD3 compatibility: Both players share the same battery bay dimensions, voltage rail, and connector pinout. The BMS handshake is identical across both units, so one cell covers either model without modification.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on both the NW-A2000 and NW-HD3. The BMS accepted the cell cleanly, voltage held steady across the discharge curve, and the protection circuit tripped correctly at the low-voltage threshold.
  • First-charge protocol after cell swap: These players frequently enter deep discharge protection after a dead-cell swap. Connect the USB charger immediately after installing the new cell and leave it for at least 30 minutes before attempting to power on — the device needs a trickle charge phase before it will draw normal current.

Battery percentage jumping after cell swap on NW-A2000

The NW-A2000 uses a voltage-threshold method to estimate charge level. After a new cell is installed, the player's internal reference points no longer match the actual discharge curve of the fresh battery. This causes the indicator to jump — sometimes from 80% to 20% in a single track. Run two or three full charge-to-discharge cycles and the indicator recalibrates against the new cell's actual voltage behaviour.

Playback cuts out before the battery indicator shows empty

At the tail end of a Li-Polymer discharge curve, cell voltage drops quickly below 3.5V. The audio amplifier stage in the NW-A2000 draws enough current at this point to cause a voltage sag that triggers the BMS protection cutoff — even though the indicator still shows a small charge remaining. This is not a faulty cell. Recharge the player when you notice the first volume instability rather than waiting for the indicator to reach zero.

Compatible Models

NW-A2000 NW-HD3

Replaces Part Numbers

LIS1317HNP 1-756-493-12 5427B

Technical Specifications

Voltage3.7V
Amp Hours750mAh
Capacity750mAh
Rate2.78Wh
Net Weight13.6g /0.48 oz
Gross Weight39g /1.38 oz
Approximate Weight39g /1.38 oz
Dimension 52.01 x 34.92 x 3.66mm

Product Highlights

  • Brand: Sony
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-Polymer
  • Battery Type: Li-Polymer
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My NW-A2000 won't turn on at all after I swapped the battery — screen is completely blank.

A blank screen immediately after a cell swap almost always means the player entered deep discharge protection before you installed the new battery. The BMS won't allow a normal boot until it receives a slow trickle charge first. Connect the USB charger and leave it plugged in for at least 30 minutes without pressing any buttons. After that trickle phase, the player should boot normally.

The battery percentage on my NW-HD3 is jumping all over the place — went from 75% to 15% in one song.

This happens because the NW-HD3's charge indicator uses fixed voltage thresholds calibrated to the original cell's age and internal resistance. A fresh replacement cell has a different discharge curve, so the readings are inaccurate until the player maps the new cell. Run two full charge and discharge cycles — charge to 100%, play until the player shuts off automatically — and the percentage display will stabilise.

My NW-A2000 battery drains noticeably faster when I use it with the optional wireless adapter than in standard playback mode.

Wireless draw on this class of device runs roughly four to five times higher than display-only playback draw. The 750mAh cell is sized for the player's base load, not for sustained wireless transmission. Disable the wireless adapter when you're not actively syncing or streaming. That single change keeps the cell in its efficient mid-discharge range and avoids the voltage sag that triggers early BMS cutoff.

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