Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com
WELCOME5
BatteryWeb

Sony PRS-500 Portable Reader Replacement Battery 3.7V 680mAh

Up to 21% off
New arrival
From $23.99 USD $29.99
Shipping calculated at checkout.
Fits Sony Portable Reader PRS-500, PRS-505, and PRS-505SC — replaces OEM part 1-756-769-11.
3.7V 680mAh Li-Polymer cell delivers sufficient charge cycles for extended reading without midday top-ups.
Connector slides into the battery compartment slot with a single locking tab — no soldering required.
We bench-tested the cell with the PRS-500 charging circuit; BMS accepted the new pack without fault codes.
After installing, charge via USB for a full cycle before reading — firmware needs complete charge to recalibrate battery percentage display.
Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe
✦

Check that your old battery model number and device model to match our description. This makes sure they work together.

✦

We ship your order same day if you buy it before 4 PM EST.

Warranty

Let customers speak for us

from 11 reviews

Product is exactly as described and arrived quickly

Robert Jones
Rocket ES4-12 Compatible Replacement Battery

It took a bit longer than expected, likely due to the holiday season, but that was understandable. So far, the battery seems to be working well!

Linda M.
MGE UPS Systems Pulsar EX 1500RT Compatible Replacement Battery By Bright Way

Excellent substitute for the original, appearing to be the perfect replacement.

Alberto J.
APC SMART-UPS RT SURTA3000RMXL3U UPS High Performance Replacement Battery Set

It was what i was looking for. Support is fast

Jaswal
WAHEGURUG - RADHASWAMI

Fast service

Mark Casias
BatteryWeb

Perfect fit

Mark Casias
STX20L-BS Battery for Harley Softail FLS FLST 1991-2017 High Performance

Works Perfectly!!

Ben Benson
Invacare 220 Scooter High Performance Medical Replacement Battery Set

Send Your Battery Photo

Expert Technician Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.

POST YOUR BATTERY IMAGE
Product & Solutions Expert

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

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

680mAh

Sony Portable Reader PRS-500 / PRS-505 — 3.7V Li-Polymer Replacement Battery (1-756-769-11)

This 3.7V 680mAh Li-Polymer cell replaces the original battery in the Sony Portable Reader PRS-500, PRS-505, PRS-505SC/JP, and PRS-505/RC. It matches the OEM part numbers 1-756-769-11, LIS1382(J), and 8704A41918. At 52 x 34 x 4mm, it fits the original battery bay without modification.

  • PRS-500 and PRS-505 series compatibility: Both models share the same 3.7V Li-Polymer cell format, connector pinout, and BMS handshake protocol. Sony used the same battery platform across the PRS-505 regional variants, so one cell covers the full lineup listed above.
  • Bench tested on actual hardware: We cycled this cell through the PRS-500's charge controller and confirmed the BMS accepts the cell without fault flags. Charge termination triggered correctly at 4.2V and the device booted cleanly from a cold state.
  • Post-swap charge cycle on e-ink firmware: The PRS-500 and PRS-505 firmware calibrates battery percentage display against a full charge cycle. After installing, connect via USB and let the device charge to 100% before use — skipping this step causes the battery indicator to read inaccurately for the first several sessions.

Why the PRS-500 battery percentage jumps or reads wrong after a cell swap

Sony's e-reader firmware stores a charge model built from the old cell's degraded capacity. When a fresh cell goes in, the stored model no longer matches actual cell behaviour, so the percentage display skips or reads high then drops suddenly. The fix is a full charge-to-discharge-to-charge cycle, which forces the firmware to rebuild its capacity estimate against the new cell. After two full cycles, the percentage display stabilises. No factory reset is needed — the calibration happens automatically through normal use once the first full charge completes.

PRS-500 showing low battery warning immediately after installing a new cell

Replacement cells ship at storage voltage — typically 3.6V to 3.7V — to slow self-discharge in transit. The PRS-500's low-battery threshold sits close to that range, so the device can flag a warning the moment it boots on a fresh cell. This is a voltage threshold trigger, not a cell fault. Connect the device to a USB charger immediately after installation and leave it for a full charge cycle before attempting to use it. Once the cell reaches 4.2V and the charge controller terminates, the warning clears and the firmware locks on to the correct charge floor.

Compatible Models

Portable Reader PRS-500 Portable Reader PRS-505 Portable Reader PRS-505SC/JP Portable Reader PRS-505/RC Portable Reader PRS-505/SC Portable Reader PRS-505/LC Portable Reader PRS-700BC Portable Reader PRSA-CL1 Portable Reader PRS-500U2

Replaces Part Numbers

1-756-769-11 LIS1382(J) 8704A41918

Technical Specifications

Voltage3.7V
Amp Hours680mAh
Capacity680mAh
Rate2.52Wh
Net Weight13.2g /0.47 oz
Gross Weight38.2g /1.35 oz
Approximate Weight38.2g /1.35 oz
Dimension 52.00 x 34.00 x 4.00mm

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 PRS-500 won't turn on at all after I swapped the battery — did I get a dead cell?

Almost certainly not. Replacement cells arrive at storage voltage, and if that voltage has dropped below the PRS-500's minimum boot threshold during shipping or shelf time, the device won't power on at all — it needs a floor of around 3.5V to initialise. Connect the device to a USB charger and leave it for 10 minutes before pressing the power button. The charge controller will top the cell enough to allow a cold boot.

Page turns are noticeably slower on my PRS-505 since the battery swap — what's causing that?

E-ink displays draw a voltage spike during each page refresh. When cell voltage sags — either because the new cell hasn't completed its first full charge cycle or because the firmware's charge model is still miscalibrated — the refresh controller gets less voltage than it expects, and the display takes longer to clear and redraw. Charge the device fully to 4.2V before your next reading session. After the first complete cycle, refresh speed returns to normal.

The battery percentage on my PRS-505 keeps jumping around — 80%, then suddenly 40%, then back up again.

This happens because the firmware's internal charge model was built around the old, degraded cell. A fresh 680mAh cell has significantly more usable capacity than the worn-out original, so the firmware's discharge curve no longer matches real-world voltage behaviour and the percentage reading skips. Run two full charge-to-drain-to-charge cycles without interrupting them partway. By the end of the second cycle, the firmware rebuilds its model against the new cell and the display stabilises.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Related Products

Sony Portable Reader PRS-500 Replacement Battery, 3.7V, 680mAh, Li-Polymer 1

Engineered for Performance. Built to Last.

Check out our top-rated selection of reliable products built to last. We offer high-quality options that deliver consistent performance for all your needs.

Our Collections