Dell Latitude X200 Replacement Battery 7.4V 3600mAh 1K090
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Dell Latitude X200 Replacement Battery 7.4V 3600mAh 1K090 - 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.
Dell Latitude X200 Replacement Battery 7.4V 3600mAh 1K090 - is backordered and will ship as soon as it is back in stock.
Voltage
7.4V
Amp
3600mAh
Dell Latitude X200 — 7.4V Li-ion Replacement Battery (1K090)
This 7.4V, 3600mAh (26.64Wh) Li-ion battery replaces the original cell in the Dell Latitude X200 ultraportable notebook. It matches the OEM voltage rail and connector used in that chassis. OEM part numbers covered include 1K090, 0K630, BAT-X200, 1J749, 451-10213, 8U443, 2K184, 0K619, and 312-0058.
- Latitude X200 cell compatibility: The X200 chassis uses a slim 7.4V two-cell pack with a specific BMS handshake tied to Dell's BIOS power management layer. Swapping to any other voltage or pack format triggers a hardware warning at POST. This cell matches that handshake, the physical dimensions (211.80 × 50.18 × 15.85mm), and the original connector orientation.
- Bench tested on actual hardware: We ran this cell through charge, discharge, and re-seat cycles on the X200. The BMS communicated correctly with the system board — no unidentified device flags at POST and no forced AC-only mode triggered during the test.
- First-cycle conditioning on the X200: After installing, 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 every cell swap on this platform.
BIOS reporting battery health as poor after replacement on the Latitude X200
The Latitude X200 BIOS reads health data from EEPROM registers embedded in the original battery pack. When a new cell goes in, those registers are blank or show factory defaults that don't match Dell's expected charge history signature. The BIOS interprets this as a degraded or unknown cell and flags poor health even though the cell is new. Running one full discharge-to-hibernate then a full uninterrupted charge clears this — the BIOS battery learn cycle writes new baseline data and the warning clears on next boot.
Latitude X200 shutting down at 20–30% charge shown on the OS gauge
This happens because the fuel gauge IC is still calibrated against the old cell's voltage curve. The new cell hits a voltage cliff under combined CPU and display load at a point the IC reads as 20–30% remaining. The laptop cuts power before the gauge reaches zero. Fix this by running two to three full discharge-to-hibernate and full charge cycles — the fuel gauge IC recalibrates against the new cell's actual curve. After calibration, the gauge reading and the real cell voltage should align to within a few percent at the 3.0V per cell floor.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Dell
- Manufacturer: CS
- Series: Standard
- Color: Metallic grey
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
Dell BIOS says the battery is unknown or shows 0% right after I installed the new cell — is the battery dead?
No — the Latitude X200 BIOS reads identity data from EEPROM registers in the pack, and a new cell ships with blank or factory-default values that don't match Dell's expected signature. The system flags it as unknown until the learn cycle runs. Discharge the laptop fully to hibernate-cutoff, then charge uninterrupted to 100%, and the BIOS will write new baseline data. After that reboot, the unknown or 0% reading should clear.
The charge gauge on my X200 jumps around wildly for the first few days — why can't it hold a steady reading?
The fuel gauge IC on the X200 board was calibrated against your old cell's specific voltage-to-capacity curve. A new cell has a different curve, so the IC is guessing until it builds new reference points. Run two to three full discharge-to-hibernate cycles followed by full uninterrupted charges — each cycle gives the IC more data to anchor against. By the third cycle the gauge reading should track within a few percent of actual cell voltage.
My replacement battery charges to 80% and stops — Dell's power manager won't let it go higher. Is the cell faulty?
The cell is not faulty — the Latitude X200 BIOS includes a charge-limit setting that caps charging at 80% to reduce long-term cell stress when the laptop sits plugged in regularly. This is a firmware-controlled threshold, not a battery fault. Open Dell's power management settings or check the BIOS under Power Management and set the charge limit to 100%. Once that setting is changed, the next charge cycle will run to full capacity.
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