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Wedge Tech PowerBook 5 CD Replacement Battery 10.8V 6600mAh

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From $88.99 USD $109.99
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Fits PowerBook 5 CD laptop; replaces OEM part numbers DR202, EMC36, ME202BB, NL2020, and SMP02.
10.8V, 6600mAh capacity delivers 71.28Wh — matches original output for full-load CPU and display operation without throttling.
Connector slides into the battery slot with a single locking tab; orientation marked on the pack and slot match on contact.
We bench-tested this cell in a PowerBook 5 CD under sustained load; the BMS held voltage steady through the full discharge cycle with no early cutoff.
After installation, run one complete discharge to sleep mode, then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears false health warnings.
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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

10.8V

Amp

6600mAh

Wedge Tech PowerBook 5 CD — 10.8V Li-ion Replacement Battery (DR202)

This is a 10.8V, 6600mAh (71.28Wh) Li-ion battery for the Wedge Tech PowerBook 5 CD laptop. It replaces OEM part numbers DR202, EMC36, ME202BB, NL2020, and SMP02. Install it when the original cell no longer holds charge or the OS reports degraded battery health.

  • PowerBook 5 CD compatibility: The PowerBook 5 CD uses a dedicated battery bay with a fixed connector pinout and a BMS that handshakes with the BIOS over the SMBus line. This cell matches that voltage rail and pin configuration exactly — no adapter or modification needed.
  • Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on the PowerBook 5 CD platform. The BMS communicated correctly with the BIOS, reported charge state accurately, and thermal cutoff triggered at the correct threshold under sustained CPU load.
  • Post-install calibration for the PowerBook 5 CD: After fitting this battery, run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after a cell swap on this model.

Why the PowerBook 5 CD shuts down at 20–30% remaining after a battery swap

The BIOS fuel gauge IC builds a capacity model against the old cell over dozens of cycles. When a new cell goes in, that model is stale — the gauge miscalculates the voltage cliff where the cell can no longer sustain current under full CPU and display load. The laptop hits that cliff before the displayed percentage reaches zero and cuts power immediately. Running two full calibration cycles forces the fuel gauge IC to rebuild its model against the new cell's actual chemistry and corrects the premature shutdown.

BIOS reporting the replacement battery as 0% or "unknown" on first boot

The BIOS reads EEPROM data written by the original cell during its service life — cycle count, rated Wh, and state-of-charge history. A new cell presents different EEPROM values, which the BIOS interprets as a fault or an unrecognised device. This is not a hardware fault with the replacement cell. Perform the learn cycle described above — discharge fully to hibernate-cutoff, then charge uninterrupted to 100% — and the BIOS will re-initialise its battery data against this cell and report a valid charge state.

Compatible Models

PowerBook 5 CD

Replaces Part Numbers

DR202 EMC36 ME202BB NL2020 SMP02

Technical Specifications

Voltage10.8V
Amp Hours6600mAh
Capacity6600mAh
Rate71.28Wh
Net Weight450g /15.87 oz
Gross Weight514g /18.13 oz
Approximate Weight514g /18.13 oz
Dimension 148.00 x 89.00 x 20.00mm

Product Highlights

  • Brand: Wedge Tech
  • 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

The PowerBook 5 CD shows a completely different Wh rating in system info after fitting this battery — is the cell defective?

No — this is an EEPROM mismatch, not a defective cell. The BIOS reads the Wh rating stored in the old cell's EEPROM and compares it against what the new cell reports. When those values differ, system info displays the EEPROM-rated figure rather than the actual chemistry value. Run one full discharge to hibernate-cutoff followed by an uninterrupted charge to 100%, and the BIOS will overwrite the stale EEPROM reference with data from the new cell.

The fuel gauge on the PowerBook 5 CD is jumping around wildly — showing 60%, then 85%, then 40% within minutes of unplugging — what causes that?

The fuel gauge IC calibrates itself incrementally against charge and discharge data from the previous cell. A new cell has a different internal resistance and voltage curve, so the IC's existing model produces erratic readings until it recalibrates. This is normal for the first two to three cycles. Run two complete discharge-to-hibernate then full-charge cycles without interruption, and the gauge will stabilise against the new cell's actual voltage curve.

The new battery in the PowerBook 5 CD stops charging at 80% and will not go higher — is the charger the problem?

The charger is not the problem. The PowerBook 5 CD BIOS includes a firmware-controlled charge limit that caps charging at 80% when a battery health or cycle-count threshold is triggered in the battery management data. This limit is set by BIOS logic, not by the cell or charger. Clear the stale battery data by running a full discharge to hibernate-cutoff followed by a charge to 100% — on most units this resets the BIOS charge limit and allows the cell to reach a full 100% state.

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