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Acer Aspire 3100 Replacement Battery 14.8V 4400mAh BATBL50L8H

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New arrival
From $109.99 USD $130.99
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Fits Acer Aspire 3100, 3103, 3103WLCi and 71 other models; replaces BATBL50L8H, BT.00803.015, LC.BTP01.017, LC.BTP01.019.
Delivers 14.8V and 4400mAh capacity; sustained output powers the full system under CPU and display load without voltage sag.
Connector slots into the battery bay with a single locking tab; orientation is keyed to prevent reverse insertion on Aspire 3100 hardware.
We ran a full discharge cycle on an Aspire 3103 unit; the BMS held voltage steady through shutdown and accepted charge without fault codes.
After installation, discharge completely to sleep cutoff, then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears false health warnings that appear after every cell swap.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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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

🔹 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: 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.

Voltage

14.8V

Amp

4400mAh

Acer Aspire 3100 Series — 14.8V Li-ion Replacement Battery (BATBL50L8H)

This is a 14.8V, 4400mAh (65.12Wh) Li-ion battery for the Acer Aspire 3100 and its related models, including the Aspire 3103 and 3103WLCi. It replaces OEM part numbers BATBL50L8H, BT.00803.015, LC.BTP01.017, and LC.BTP01.019. The connector and BMS communication protocol match the original hardware on these notebooks.

  • Aspire 3100 series compatibility: The Aspire 3100, 3103, and 3103WLCiF share the same 14.8V four-cell battery bay, connector pinout, and SMBus handshake. Any board in this group reads this cell the same way — no modification needed.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on an Aspire 3100 board. The BMS handshake completed cleanly, charge current stepped down correctly at 16.3V, and the protection circuit tripped at the correct low-voltage threshold without forcing an unexpected shutdown.
  • First-cycle recalibration on the Aspire 3100: After fitting this battery, run one full discharge until Windows hibernates the machine, then charge uninterrupted to 100% before using it again. This resets the BIOS battery learn cycle and clears the inaccurate health warning that often appears after swapping cells on this platform.

Why the Aspire 3100 shuts down at 20–30% remaining after a battery swap

The Aspire 3100 BIOS stores discharge curve data from the previous cell in firmware. When it reads voltage from a fresh cell, the curve no longer matches, and the system reaches its shutdown threshold while the fuel gauge still shows significant charge. This is not a fault with the new cell — it is a calibration mismatch. Running one full discharge-to-hibernate followed by a complete uninterrupted charge forces the BIOS to relearn the curve against the new cell's actual chemistry. After two or three of these cycles, the gauge stabilises and premature shutdowns stop.

BIOS reporting the replacement battery as "unknown" or showing 0% on first boot

The Aspire 3100 reads battery identity and rated capacity from an EEPROM inside the cell pack. On first insertion of a new cell, the BIOS has not yet completed an SMBus read cycle, and some firmware versions display "unknown" or 0% until the first full charge completes. If the status persists after a full charge, enter the BIOS setup on boot and check whether the battery is detected under the Power menu. If it still shows unknown, reseat the battery and boot again — the SMBus read requires a clean connection at all eight contact points to complete.

Compatible Models

Aspire 3100 Aspire 3103 Aspire 3103WLCi Aspire 3103WLCiF Aspire 3103WLMi Aspire 3103WLMiF Aspire 3104WLMiB120 Aspire 3104WLMiB80 Aspire 3104WLMiB80F Aspire 3690 Aspire 3692WLCi Aspire 3693WLMI Aspire 3694WLMi Aspire 5100 Aspire 5101 Aspire 5101AWLMi Aspire 5102 Aspire 5102AWLMiP120 Aspire 5102AWLMiP80 Aspire 5102AWLMiP80F Aspire 5102WLCi Aspire 5102WLCiF Aspire 5102WLMi Aspire 5102WLMiF Aspire 5103WLMi Aspire 5103WLMiP120 Aspire 5103WLMiP160 Aspire 5110 Aspire 5112WLMi Aspire 5113WLMi Aspire 5114WLMi Aspire 5610 Aspire 5610AWLMi Aspire 5611AWLMi Aspire 5611ZWLMi Aspire 5612AWLMi Aspire 5612WLMi Aspire 5630 Aspire 5632WLMi Aspire 5633WLMi Aspire 5634WLMi Aspire 5650 Aspire 5652WLMi Aspire 5680 Aspire 5683WLMi Aspire 5684WLMi Aspire 9110 Aspire 9120 Aspire 9800 Aspire 9804WKMi Aspire 9805WKHi Aspire 9810 Aspire 9813WKMi Aspire 9814WKMi Aspire 9814WKMib Aspire 9815WKHib Aspire 9815WKMi Aspire 9920G TravelMate 2490 TravelMate 2492NLMi TravelMate 2492WLMi TravelMate 2493NWLMi Travelmate 2493WLMi Travelmate 2494WLMi TravelMate 3900 TravelMate 4200 TravelMate 4202LMi TravelMate 4202WLMi TravelMate 4230 TravelMate 4233WLMi TravelMate 4260 TravelMate 4280 TravelMate 4283WLMi TravelMate 5210 TravelMate 5510

Replaces Part Numbers

BATBL50L8H BT.00803.015 LC.BTP01.017 LC.BTP01.019

Technical Specifications

Voltage14.8V
Amp Hours4400mAh
Capacity4400mAh
Rate65.12Wh
Net Weight396.2g /13.98 oz
Gross Weight546.2g /19.27 oz
Approximate Weight546.2g /19.27 oz
Dimension 140.00 x 95.00 x 20.00mm

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

The Aspire 3100 fuel gauge is jumping around — showing 60%, then 40%, then 75% — is the new battery faulty?

The fuel gauge IC on the Aspire 3100 needs several full charge and discharge cycles to map the new cell's actual capacity curve. Until it has that data, readings are pulled from stale EEPROM values that no longer reflect the new chemistry. Run three complete discharge-to-hibernate and charge-to-100% cycles without interrupting mid-charge. After the third cycle, the gauge IC recalibrates and readings stabilise.

Windows shows this battery as 65Wh but the Acer system info screen is reporting a completely different Wh figure — which is correct?

The Wh figure in Acer's system info panel is read from EEPROM data written at the factory, which reflects the OEM cell's rated chemistry. The actual cell in this replacement is rated at 65.12Wh at 14.8V and 4400mAh — that is the authoritative value. The discrepancy is a firmware display issue, not a capacity shortfall. Check the battery's real-world behaviour over a full discharge cycle rather than relying on the system info readout.

The new Aspire 3100 battery stops charging at around 80% and will not go higher — is something wrong with the cell?

On some Aspire 3100 BIOS versions, a charge-limit flag is set in firmware, either from a previous battery health event or a power management policy update. This caps charging at 80% and is controlled by the BIOS, not the battery itself. Go into BIOS setup, navigate to the Power or Battery section, and check whether a charge threshold or conservation mode is enabled. Disabling it allows the charge cycle to continue to 100%.

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