Toshiba Satellite A80-116 Replacement Battery 10.8V 6600mAh
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Toshiba Satellite A80-116 Replacement Battery 10.8V 6600mAh - 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.
Toshiba Satellite A80-116 Replacement Battery 10.8V 6600mAh - is backordered and will ship as soon as it is back in stock.
Voltage
10.8V
Amp
6600mAh
Toshiba Satellite A80-116 / M40-307 / Tecra A3-188 — 10.8V Li-ion Replacement Battery (PA3399U-2BRS)
This is a 10.8V, 6600mAh (71.28Wh) Li-ion battery for the Toshiba Satellite A80-116 and related notebooks. It replaces OEM part numbers PA3399U-2BRS, PABAS077, PA3478U-1BRS, and related variants across the Satellite M40, M50, and Tecra A3 lines. The original cells in these machines are now well over a decade old — most no longer hold a meaningful charge.
- Satellite A80 / M40 / M50 / Tecra A3 platform fit: These models share the same 10.8V power rail, six-cell bay format, and connector pinout. The BMS handshake protocol is consistent across the PA3399U and PA3478U part families, so the same cell works across all listed variants without modification.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on a Satellite A80-series unit. The BMS accepted the cell immediately, charge current ramped correctly through CC and CV phases, and the protection circuit tripped at the expected low-voltage threshold without forcing a hard shutdown.
- Post-install calibration on the Satellite A80: After fitting, run the laptop on battery only until it reaches hibernate cutoff — do not interrupt. 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.
Why the Satellite A80 shuts down at 20–30% remaining
The Satellite A80 cuts power when cell voltage drops below a threshold the BIOS considers unsafe — typically around 10.0V under load. With aged cells, voltage sags sharply when CPU and display draw peaks, hitting that cutoff while the fuel gauge still reads 20–30%. A new cell holds voltage flat under the same load, so the cutoff no longer triggers early. After two full calibration cycles, the gauge and actual cutoff point align correctly.
BIOS reporting new battery health as poor immediately after swap
The Toshiba BIOS reads health data stored in the battery's EEPROM and compares it against internal charge history. A freshly installed cell has no charge history logged, so the BIOS flags it as degraded — this is a data gap, not a cell fault. Run one full discharge-to-hibernate cycle followed by an uninterrupted charge to 100%. That single cycle writes enough EEPROM data for the BIOS to re-evaluate health correctly and clear the warning.
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 fuel gauge on my Satellite A80 is jumping around — showing 60%, then 90%, then cutting out. Is the new battery faulty?
It is not faulty. The fuel gauge IC on this platform calibrates itself against charge and discharge history stored in the battery's EEPROM. A new cell has no history, so the gauge reads erratically for the first two or three cycles. Run two complete discharge-to-hibernate cycles with uninterrupted charges to 100% each time — the gauge stabilises once the IC has enough data points to build an accurate model.
My Satellite A80 shows the new battery at the wrong Wh rating in system information — it reads lower than the 71.28Wh spec. Why?
The Wh figure shown in Windows or Toshiba Power Saver pulls from the EEPROM's rated design capacity field, which reflects the original OEM cell's programmed value — not a live measurement of the new cell. This is a firmware reporting difference between EEPROM-programmed data and actual cell chemistry. It does not affect how the battery charges or performs. After a full calibration cycle, the reported full-charge capacity figure will update to reflect the actual cell.
The new battery stopped charging at 80% and won't go higher — the charge light went off but the laptop says it's not full.
Some Toshiba BIOS versions include a charge-limit setting that caps charging at 80% to reduce long-term cell wear. Check Toshiba Power Saver or the BIOS power settings under "Battery Care Function" — it is enabled by default on several A80 and M40 BIOS revisions. Disable that setting, unplug and re-plug the AC adapter, and the battery will charge to 100%.
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