Toshiba PA2452 Libretto 100CS Replacement Battery 10.8V 3000mAh
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Toshiba PA2452 Libretto 100CS Replacement Battery 10.8V 3000mAh - 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 PA2452 Libretto 100CS Replacement Battery 10.8V 3000mAh - is backordered and will ship as soon as it is back in stock.
Voltage
10.8V
Amp
3000mAh
Toshiba Libretto 100CS / Libretto 30 Series — 10.8V Li-ion Replacement Battery (PA2452)
This is a 10.8V, 3000mAh (32.4Wh) Li-ion battery for the Toshiba Libretto subnotebook line. It covers the Libretto 100CS, Libretto 20, Libretto 20CT, Libretto 30, and several additional Libretto variants sharing the PA2452 and PA2497 part number family. If your Libretto no longer holds a charge or shows a flat-dead reading, this cell replaces the degraded original pack directly.
- Libretto series compatibility: The Libretto 20 through 100CS models share the same battery bay dimensions, connector pinout, and 10.8V nominal rail. The PA2452, PA2452U, PA2452UJ, PA2452UR, PA2497, PA2497U, PA2497UR, PA2498, and PA2498U part numbers all cross-reference to this same physical pack. One cell fits the full range.
- Bench tested on actual hardware: We cycled this pack through charge and discharge on compatible Libretto hardware. The BMS held voltage within spec across the full discharge curve and did not trigger an early cutoff during sustained CPU and display load.
- Post-install calibration on the Libretto: After fitting the new cell, run the Libretto down to hibernate-cutoff under normal use — do not force it off — then charge uninterrupted to 100%. The Libretto's BIOS battery learn cycle needs this full pass to recalibrate against the new cell and stop reporting a false health warning on the power status screen.
BIOS reporting battery health as poor immediately after fitting a new cell
The Libretto's BIOS reads health data from EEPROM stored on the old battery pack. When a new cell goes in, that stored data does not match the fresh chemistry, so the BIOS flags it as degraded — even on a brand-new battery. This is not a fault with the replacement cell. Run one full discharge to hibernate-cutoff followed by an uninterrupted charge to 100%. After one to two cycles, the BIOS recalibrates and the health warning clears.
Libretto shutting down at 20–30% charge shown on the power indicator
The Libretto's fuel gauge IC was calibrated against the original cell's discharge curve. With a new cell installed, the IC's internal model drifts — it reads 25% but the actual cell voltage is already at or near cutoff under load. The shutdown is real; the percentage shown is wrong. Run two to three full discharge-to-hibernate and full-charge cycles. After calibration settles, the displayed percentage and actual remaining capacity align, and the early shutdown stops.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Toshiba
- Manufacturer: CS
- Series: Standard
- Color: Grey
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
The Libretto BIOS shows the new battery as 0% or "unknown" right after I installed it — is the cell dead?
The cell is not dead. The Libretto reads battery state from EEPROM data written by the original pack, and a fresh cell has no matching data stored yet. Power the unit on, let it run down to hibernate-cutoff under normal use, then charge uninterrupted to 100%. After that first full cycle, the BIOS recognises the cell and displays an accurate reading.
My Libretto is cutting off at around 25% on the battery meter — why is it shutting down so early?
The fuel gauge IC on the Libretto motherboard built its discharge model around the old, degraded cell. With a new cell in place, the IC's voltage-to-percentage mapping is out of sync — it reports 25% while the actual cell voltage under CPU and display load has already dropped to cutoff. Run two full discharge-to-hibernate cycles followed by complete charges to 100% each time. The IC recalibrates across those cycles and the early shutdown stops.
System information is showing the wrong Wh rating for this battery — it doesn't match the 32.4Wh spec. What's happening?
The Wh figure shown in system info is pulled from EEPROM data on the battery pack, not measured live from the cell. If the EEPROM value differs from the cell's actual rated chemistry, Windows or the Toshiba power utility reports the stored number rather than the real one. This does not affect how the battery charges or discharges. Confirm the physical pack reads 10.8V at the connector — if it does, the cell is correct and the Wh display discrepancy is a firmware data mismatch only.
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