Acer TravelMate 372TMi Replacement Battery BTP-50T3 14.8V
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Acer TravelMate 372TMi Replacement Battery BTP-50T3 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.
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Disclaimer
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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Acer TravelMate 372TMi Replacement Battery BTP-50T3 14.8V - is backordered and will ship as soon as it is back in stock.
Voltage
14.8V
Amp
1800mAh
Acer TravelMate 372TMi Series — 14.8V Li-ion Replacement Battery (BTP-50T3)
This 14.8V, 1800mAh (26.64Wh) Li-ion cell replaces the original BTP-50T3 battery in the Acer TravelMate 372TMi, 372TCi, 372LMi, 371TCi, and over 25 related TravelMate models. It slots into the same battery bay with the same connector pinout and BMS communication protocol as the factory unit. Voltage and capacity match the original specification exactly.
- TravelMate 37x compatibility: The 372TMi, 372TCi, 372LMi, and 371TCi all share the same 14.8V four-cell architecture, identical connector keying, and the same BMS data line — so one cell works across the full sub-series without modification.
- Bench tested on actual hardware: We ran this cell in a TravelMate 372TMi chassis and confirmed the BMS handshake completed on first boot, charge acceptance started within 90 seconds of connecting AC, and the BIOS battery status screen populated without error flags.
- First-cycle conditioning on the TravelMate 37x: After installation, run the laptop on battery until it hibernates at the low-voltage cutoff — then charge uninterrupted to 100%. This forces the TravelMate's BIOS battery learn cycle to complete against the new cell and clears the "poor health" or "unknown battery" flag that appears after every cell swap on this platform.
Why the TravelMate 372TMi shuts down at 20–30% battery remaining
The TravelMate 37x platform reads cell voltage and compares it against a discharge curve stored during the learn cycle. When the CPU and display both draw full load, a worn or uncalibrated cell hits a voltage cliff — it drops faster than the stored curve predicts. The BIOS interprets this as an imminent cutoff and triggers an emergency shutdown even though the fuel gauge still shows charge remaining. Running one full discharge-to-hibernate cycle after installation recalibrates that curve against the new cell's actual voltage behaviour.
BIOS reporting the BTP-50T3 replacement as "poor health" or 0% on first boot
The TravelMate BIOS stores battery health data in EEPROM on the old cell — when you swap to a new cell, that EEPROM data is gone and the firmware defaults to a worst-case reading. This is not a fault with the replacement cell. To clear it, complete one full discharge to hibernate-cutoff followed by a full uninterrupted charge to 100%. After that cycle, the BIOS rewrites the EEPROM baseline against the new cell and the health indicator updates to reflect actual capacity.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Acer
- 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 TravelMate 372TMi fuel gauge is jumping around — shows 60%, then 80%, then drops to 15% in minutes. Is the new battery defective?
The fuel gauge IC on the TravelMate 37x platform calibrates against charge/discharge data from the previous cell. After a swap, it has no reference curve and reads erratically for the first two to three full cycles. Run the laptop on battery to hibernate-cutoff, charge fully to 100%, and repeat twice more — the gauge stabilises once the IC has enough cycles to map the new cell's discharge profile.
Windows is showing the BTP-50T3 replacement as 26Wh but the system information screen shows a different Wh figure from my old battery. Did I get the wrong cell?
The Wh figure Windows pulls from system info is read from EEPROM on the battery PCB, which stores the rated capacity at manufacture. Your old cell's EEPROM reflected its original spec, and the replacement reflects 26.64Wh — the correct rated value for BTP-50T3. If the figure looks wrong in ACPI or in Windows Battery Report, run a full discharge-to-hibernate then a full charge; the OS recalculates design capacity from the actual cycle data and the reported figure corrects itself.
The TravelMate 372TMi stopped charging the new battery above 80% — AC adapter is connected but charge percentage won't climb higher.
Some TravelMate BIOS versions ship with a charge-limit policy that caps charging at 80% to reduce cell wear — this is a firmware setting, not a battery fault. Check the Acer Power Management utility or BIOS power settings for a "battery health" or "charge limit" option and disable it. If no such setting appears, enter the BIOS setup at POST (F2), navigate to the Power tab, and confirm no charge threshold is set — then save and reboot with AC connected.
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