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Pocketbook Pro 602 Compatible Battery 1ICP4/40/60 3.7V

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Fits Pocketbook Pro 602, Pro 603, Pro 902, Pro 903 e-readers; replaces OEM 1ICP4/40/60 1S1P battery pack.
3.7V, 1100mAh lithium-ion cell delivers stable power to e-ink display refresh cycles and wireless modules without voltage sag.
Connector seats flush into the battery slot with a single locking tab; orientation marked on housing to prevent reverse insertion.
We bench-tested this cell in a Pro 602 and confirmed the BMS accepted the new pack on first connection without fault codes.
After installation, charge via USB for a full cycle before opening books — Pocketbook firmware recalibrates battery percentage display after a cell swap.
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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

1100mAh

Pocketbook Pro 602 / 902 Series — 3.7V Li-ion Replacement Battery (1ICP4/40/60 1S1P)

This is a 3.7V, 1100mAh Li-ion cell that fits the Pocketbook Pro 602, Pro 603, Pro 902, and Pro 903 e-readers. It replaces the original 1ICP4/40/60 1S1P cell that powers the e-ink display, page-turn controller, and USB charging circuit. Swap it in when the device no longer holds a charge or fails to power on at all.

  • Pro 602 / 603 / 902 / 903 compatibility: These four models share the same battery bay dimensions (65.80 × 53.70 × 4.80mm), connector pinout, and BMS handshake protocol — all four accept this cell without modification.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on the Pro 602 platform. The BMS accepted the cell, the protection circuit tripped correctly at the low-voltage threshold, and the firmware read state-of-charge without error flags.
  • Post-swap USB charge requirement: Pocketbook firmware recalibrates its fuel gauge after a cell swap. Plug into USB immediately after installation and run a full charge before first use — skipping this step causes the percentage indicator to jump erratically for several cycles.

Why the Pro 602 shows low battery immediately after a new cell is installed

Replacement cells ship at storage voltage — typically 3.6–3.7V — not at full charge. The Pocketbook firmware interprets anything below its calibrated full-charge threshold as a low battery state and displays the warning icon straight away. This is a firmware reporting issue, not a cell defect. Connect the device to a USB charger and let it complete a full charge cycle before drawing any conclusions about the new cell's condition.

Page turns sluggish or delayed after replacing the battery

E-ink displays require a voltage pulse to refresh each pixel. When the cell voltage sags — even briefly — the controller extends the refresh window to compensate, which appears as a slow or stuttering page turn. This typically occurs when the new cell hasn't completed its first full charge and is operating at the lower end of its voltage range. Charge fully to 4.2V and the response time returns to normal. If sluggishness continues after a full charge, check that the connector is fully seated and making clean contact.

Compatible Models

Pro 602 Pro 603 Pro 902 Pro 903 Pro 920 Pro 920.W Pro 612 Pro 912

Replaces Part Numbers

1ICP4/40/60 1S1P

Technical Specifications

Voltage3.7V
Amp Hours1100mAh
Capacity1100mAh
Rate4.07Wh
Net Weight26.8g /0.95 oz
Gross Weight51.8g /1.83 oz
Approximate Weight51.8g /1.83 oz
Dimension 65.80 x 53.70 x 4.80mm

Product Highlights

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

Frequently Asked Questions

My Pocketbook Pro 602 won't turn on at all after I put the new battery in — did I get a dead cell?

Almost certainly not. Replacement cells ship at storage voltage, which can sit just below the minimum boot threshold the Pro 602 needs to initialise. Connect it to a USB charger and leave it for at least 10 minutes before pressing the power button — the device needs a small top-up charge before the firmware will start. If it still won't boot after 10 minutes of charging, reseat the battery connector and confirm it clicked fully into place.

The battery percentage on my Pro 603 keeps jumping around — it shows 80%, then drops to 40%, then jumps back up within minutes. Is the cell faulty?

This is the firmware recalibrating its fuel gauge to the new cell, not a sign of a bad battery. The Pocketbook fuel gauge learns the cell's charge curve over the first two or three full charge-discharge cycles. Run two complete cycles — charge fully to 4.2V, use until the low-battery warning appears, then charge fully again — and the percentage display will stabilise.

My Pro 902 battery drains noticeably faster when I have WiFi on compared to just reading. Is something wrong with the new cell?

Nothing is wrong. WiFi draws significantly more current than the e-ink display alone — the radio can pull several times the baseline reading-mode draw. The 1100mAh cell is the same capacity as the original, so the behaviour is identical to a new device. If drain feels excessive, check that WiFi is set to disconnect after syncing rather than staying on continuously — the Pocketbook network settings include an auto-disconnect interval that cuts background radio draw substantially.

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