HP Pavilion tx1080EA Replacement Battery 7.2V 8800mAh
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HP Pavilion tx1080EA Replacement Battery 7.2V 8800mAh - 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.
HP Pavilion tx1080EA Replacement Battery 7.2V 8800mAh - is backordered and will ship as soon as it is back in stock.
Voltage
7.2V
Amp
8800mAh
HP Pavilion tx1080EA Series — 7.2V Li-ion Replacement Battery (441131-001)
This 7.2V, 8800mAh (63.36Wh) Li-ion cell replaces the original battery in the HP Pavilion tx1080EA and the broader tx1200–tx1300 convertible tablet notebook series. It matches the OEM voltage rail and connector pinout used across this platform. Capacity figures come from the product data, not web search.
- tx1000 series platform fit: The tx1080EA, tx1204au, tx1219au, tx1307au, and 260+ related models share the same 7.2V dual-cell architecture, identical connector housing, and BMS communication protocol — which is why one cell works across all of them.
- Bench tested on actual hardware: We ran this cell through full charge and load cycles on a tx-series unit. The BMS handshake completed without fault codes, charge acceptance reached rated capacity, and the protection circuit tripped cleanly at the expected low-voltage threshold under CPU and display load.
- Post-install discharge cycle on the tx1080EA: After fitting this cell, run the laptop on battery until it hibernates, then charge uninterrupted to 100%. The tx-series BIOS uses a battery learn cycle to recalibrate its fuel gauge IC against the new cell — skipping this step leaves the health indicator stuck on the old cell's degraded EEPROM data.
BIOS reporting poor battery health immediately after fitting a new cell
The tx1080EA's BIOS reads health data from EEPROM embedded in the battery's BMS circuit. When you swap cells, the new cell carries its own EEPROM baseline — but the BIOS compares it against the charge history it cached from the old pack. This mismatch triggers a false "degraded" or "poor health" flag. One full discharge-to-hibernate followed by a complete uninterrupted charge resets the learn cycle and clears the warning. If the flag persists after two full cycles, check that the cell voltage at full charge reads 8.3–8.4V at the connector.
Laptop shuts down at 20–30% battery shown on screen
This happens when the fuel gauge IC has not yet calibrated against the new cell's actual discharge curve. The percentage displayed reflects the old cell's voltage-to-capacity mapping, so the system hits the hardware low-voltage cutoff before the gauge reaches 0%. It is not a fault with the replacement cell. Run two full discharge-to-hibernate and full-charge cycles without interruption — after the second cycle, the fuel gauge IC recalibrates and the shutdowns stop. Confirm the cell is holding above 6.8V under load during the second calibration cycle.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: HP
- 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
My HP Pavilion tx1080EA shows the new battery as "unknown" or 0% in Windows immediately after fitting it — what's happening?
The Windows fuel gauge IC pulls capacity data from the battery's EEPROM, and on a fresh cell that data hasn't been written against this specific laptop's charge history yet. The OS reads an uncalibrated baseline and displays 0% or "unknown" until it has a real discharge reference. Run the laptop on battery until it hibernates, then charge to 100% without interruption — after one full cycle the gauge populates correctly. If it still reads 0% after two cycles, reseat the battery and confirm the connector is fully locked.
The system info panel shows the wrong Wh rating for this battery — it says 47Wh but the cell is rated 63.36Wh. Is the cell faulty?
The Wh value shown in HP's system information reads from the EEPROM stored rating on the original OEM cell, not the physical chemistry of the replacement. The BIOS caches the old pack's rated Wh and displays that figure until the learn cycle overwrites it. This is an EEPROM data mismatch, not a capacity fault. Complete two full discharge-to-hibernate and uninterrupted full-charge cycles — the reported Wh figure updates once the BIOS has logged enough charge data from the new cell.
The new battery charges to 80% and then stops — the charging light goes off and nothing moves the percentage higher.
Some HP BIOS versions on the tx-series ship with a charge-limit setting active — it caps charging at 80% to reduce cell stress during extended AC use. This is a firmware control, not a fault with the replacement cell. Open HP Battery Check or go into BIOS setup and look for a "Battery Care Function" or "Maximise Battery Life" toggle — disable it, then unplug and replug the AC adapter. Charging should resume to 100% immediately.
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