Philips FREEVENTS X67 1200 Replacement Battery 11.1V 4400mAh
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Philips FREEVENTS X67 1200 Replacement Battery 11.1V 4400mAh - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
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
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
⚠️ 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.
Philips FREEVENTS X67 1200 Replacement Battery 11.1V 4400mAh - is backordered and will ship as soon as it is back in stock.
Voltage
11.1V
Amp
4400mAh
Philips FREEVENTS X67 1200 / 11NB5800 — 11.1V Li-ion Replacement Battery
This 11.1V, 4400mAh (48.84Wh) Li-ion battery replaces the original cell in the Philips FREEVENTS X67 1200 and 11NB5800 notebooks. It fits where the stock battery sits, uses the same connector, and communicates with the BIOS over the same SMBus line. Capacity is drawn directly from product data — 4400mAh.
- FREEVENTS X67 1200 and 11NB5800 compatibility: Both models share an identical battery bay, the same 11.1V three-cell rail, and the same SMBus handshake protocol — so one replacement cell works across both. The BMS firmware responds to the same charge-termination signal the original charger sends.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on the FREEVENTS platform and confirmed BMS recognition on the first insertion. Charge current tapered correctly at top-of-charge, and the cutoff triggered cleanly at the low-voltage threshold without a hard shutdown event.
- Post-install calibration on the FREEVENTS X67: After fitting this battery, run one full discharge to the hibernate cutoff point, then charge uninterrupted to 100% without pulling the adapter. This resets the BIOS battery learn cycle and clears the inaccurate health or low-capacity warning that appears after every cell swap on this platform.
BIOS reporting poor battery health immediately after fitting a new cell
The FREEVENTS BIOS stores capacity and health data in EEPROM tied to the original cell's charge history. When a new cell goes in, the BIOS compares live readings against that stale EEPROM baseline and flags a mismatch as poor health. This is not a fault with the replacement cell — it is a data conflict. Run one full discharge-to-hibernate followed by a full uninterrupted charge to 100%. The BIOS battery learn cycle rewrites the EEPROM baseline against the new cell's actual capacity curve.
Laptop cuts off at 20–30% remaining shown on screen
This happens when the fuel gauge IC's state-of-charge map drifts out of sync with the new cell's voltage curve. The gauge predicts 20–30% remaining but the cell's actual voltage under combined CPU and display load has already dropped past the BMS cutoff threshold. The laptop shuts down because real cell voltage collapsed, not because the displayed percentage hit zero. Run two or three full discharge-to-hibernate then charge-to-100% cycles — this re-anchors the fuel gauge IC endpoints to the new cell and the percentage readout will track accurately from that point.
Compatible Models
Technical Specifications
Product Highlights
- Brand: Philips
- Manufacturer: CS
- Series: Standard
- Color: Silver
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My FREEVENTS X67 shows the new battery as "0%" or "unknown" in Windows — is the cell dead on arrival?
It is not dead. The Windows fuel gauge IC has no calibration data for the new cell yet and defaults to an unknown or zero state until it completes a full charge cycle. Charge the laptop uninterrupted to 100% from whatever state it arrived in, then discharge fully to hibernate, then charge again to 100%. After that first complete learn cycle the gauge will display a real percentage. If it still reads unknown after two full cycles, check that the battery connector is fully seated — a partially engaged connector breaks the SMBus data line while still allowing partial charge current.
The replacement cell reports a lower Wh rating in system info than the original battery did — is the capacity wrong?
The Wh figure shown in system info is read from EEPROM data stored by the old cell, not measured live from the new one. The replacement cell carries its own EEPROM rating, which the BIOS may display differently until the battery learn cycle runs. This cell is rated at 48.84Wh from product data. Run one full discharge-to-hibernate followed by a full charge to 100% — after the learn cycle completes, the system info figure will update to reflect the new cell's actual EEPROM values.
Charge stops climbing and holds at 80% no matter how long the adapter stays plugged in — what is blocking it?
The FREEVENTS BIOS on some firmware versions includes a charge-limit setting that caps charging at 80% to reduce cell wear during prolonged AC use. This is a BIOS-controlled threshold, not a fault with the replacement battery. Enter the BIOS setup utility at boot and look for a battery or power management section — disable the charge limit or set the upper threshold to 100%. If no such setting appears, check whether a Philips or notebook utility installed in Windows is enforcing the cap at the software level and disable it there.
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