Toshiba Satellite 1100 Replacement Battery PA3209U-1BRS 14.8V
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Toshiba Satellite 1100 Replacement Battery PA3209U-1BRS 14.8V - 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
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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Toshiba Satellite 1100 Replacement Battery PA3209U-1BRS 14.8V - is backordered and will ship as soon as it is back in stock.
Voltage
14.8V
Amp
4400mAh
Toshiba Satellite 1100 / 1110 Series — 14.8V Li-ion Replacement Battery (PA3209U-1BRS)
This is a 14.8V, 4400mAh (65.12Wh) Li-ion battery for the Toshiba Satellite 1100 and 1110 notebook series. It fits the Satellite 1100, 1110, 1100-S101, and 1110-S153, among other models in this lineup. It replaces OEM part PA3209U-1BRS directly.
- Satellite 1100 / 1110 platform fit: These models share the same 14.8V four-cell battery rail, connector pinout, and BMS handshake protocol. Swapping between models in this series works because the charge controller expects the same voltage profile and SMBus communication from the battery pack.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a Satellite 1100 chassis. The BMS handshake completed cleanly, the charge controller accepted the pack without flagging an unknown device, and the cell held voltage within spec across the full discharge curve.
- Post-install discharge cycle for Satellite 1100: After fitting this battery, let the laptop run on battery until it hibernates from low charge, then charge it uninterrupted to 100%. The Satellite 1100's BIOS uses this learn cycle to reset its internal capacity estimate against the new cell — skipping it leaves the fuel gauge reading from stale EEPROM data.
BIOS reporting poor battery health immediately after fitting a new cell
The Satellite 1100 BIOS stores battery health data in EEPROM on the old pack. When a new cell goes in, that stored data no longer matches, and the BIOS flags the battery as degraded before it has run a single cycle. This is not a fault with the replacement cell. Run one full discharge-to-hibernate followed by an uninterrupted charge to 100%. The BIOS recalculates health against the new cell's actual charge curve and clears the warning.
Laptop cuts out at 20–30% charge shown on screen
This happens when the fuel gauge IC still holds calibration data from the original degraded cell. The percentage shown on screen no longer maps accurately to actual remaining cell voltage. Under full CPU and display load, the cell hits its low-voltage cutoff while the OS still shows capacity remaining. Run two to three full discharge-to-hibernate and full-charge cycles to recalibrate the fuel gauge IC against the new cell's actual voltage curve — after that, the cutoff should track correctly down to the configured low-battery threshold near 10.5V per cell.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Toshiba
- 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 Toshiba Satellite 1100 BIOS shows "0% available (plugged in, charging)" after I put in the new battery — what's wrong?
The BIOS is reading EEPROM data from the old pack and hasn't yet calibrated against the new cell's chemistry. It isn't a fault with the replacement battery. Run the laptop on battery until it hibernates from low charge, then charge uninterrupted to 100%. After that full learn cycle, the BIOS should report a valid charge percentage.
My Satellite 1100 shuts down suddenly while the battery gauge still shows 25% — is the replacement cell faulty?
The fuel gauge IC is still calibrated to the old, degraded cell's voltage curve. When the new cell hits its actual low-voltage cutoff under CPU and display load, the OS hasn't caught up and still shows capacity remaining. This corrects itself after two or three full discharge-to-hibernate and uninterrupted full-charge cycles. Once recalibrated, the shutoff will track the correct low-voltage threshold.
Windows is showing the wrong Wh rating for this battery — it says 48Wh but the spec is 65.12Wh. Did I get the wrong pack?
The Wh figure Windows displays is pulled from the battery's EEPROM, which stores the rated capacity of the original cell at manufacture. A replacement cell from a different production batch can carry a different EEPROM-rated value even when the actual chemistry matches. Check the physical label on the pack — if it reads 14.8V and 4400mAh, the cell is correct. The OS-reported Wh figure will update to reflect real-world capacity after the BIOS completes one full battery learn cycle.
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