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Acer Liquid E3 BAT-A10 Replacement Battery 3.8V 2000mAh

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From $23.99 USD $29.99
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Fits Acer Liquid E3, E380, V380, and replaces OEM part BAT-A10.
This 3.8V, 2000mAh lithium-polymer cell restores full capacity to devices degraded by age.
Connector matches original orientation; no adapter needed for direct swap into E3 housing.
We bench-tested this pack on the E3 platform—BMS initialized cleanly and held 3.8V under idle load.
On first charge after installation, complete one full discharge-to-shutdown cycle before regular use; the fuel gauge IC needs to recalibrate against this cell's discharge curve to report accurate percentage.
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

3.8V

Amp

2000mAh

Acer Liquid E3 / E380 — 3.8V Li-Polymer Replacement Battery (BAT-A10)

This 3.8V, 2000mAh lithium-polymer cell replaces the BAT-A10 battery in the Acer Liquid E3, E380, V380, and Liquid Z5 smartphones. At 71.50 × 57.60 × 3.50mm, it matches the original footprint for direct swap during device repair. Capacity is 2000mAh (7.6Wh), identical to the factory specification.

  • Liquid E3 / E380 / Z5 platform fit: These models share the same battery bay dimensions, connector pinout, and BMS handshake protocol. The BAT-A10 part number covers all variants, and the cell's NTC thermistor line matches the charge IC on each board.
  • Bench tested on actual hardware: We cycled this cell through charge and load on the Liquid E3 platform. The BMS accepted the charge IC handshake without fault codes, and the protection circuit tripped correctly at the expected over-discharge threshold.
  • Fuel gauge recalibration after swap: After installing this cell, run one full discharge to 5% and a complete charge to 100% before normal use. The Liquid E3's fuel gauge IC was calibrated to the old cell's discharge curve — one full cycle resets the coulomb counter against the new cell's actual capacity.

Why the Liquid E3 reports wrong battery percentage after a cell swap

The Liquid E3 uses a coulomb-counting fuel gauge IC that builds its capacity model from accumulated charge and discharge data on the original cell. When you install a new cell, the IC still references the old degraded discharge curve. Until it recalibrates, Android displays percentages that don't reflect actual charge state. One complete discharge-to-charge cycle overwrites the stored curve and aligns reported percentage with real cell voltage.

Sudden shutdown at 20–30% on the replacement cell

This happens when the modem transmitter or display backlight draws a current spike the cell cannot sustain at that state of charge — voltage collapses below the BMS cutoff threshold even though the gauge still shows 20–30%. It is more common in the first few cycles before the fuel gauge recalibrates. After two full discharge-charge cycles, the gauge tracks the real voltage cliff and the premature shutdowns stop. If shutdowns continue past three cycles, measure resting cell voltage at shutdown — it should read above 3.5V; anything below 3.4V points to a faulty cell.

Compatible Models

Liquid E3 E380 V380 Liquid Z5 Z150 Z150 Duo Liquid Z5 Duo

Replaces Part Numbers

BAT-A10 BAT-A10(1ICP4/58/71) KT.0010S.010

Technical Specifications

Voltage3.8V
Amp Hours2000mAh
Capacity2000mAh
Rate7.6Wh
Net Weight36g /1.27 oz
Gross Weight61g /2.15 oz
Approximate Weight61g /2.15 oz
Dimension 71.50 x 57.60 x 3.50mm

Product Highlights

  • Brand: Acer
  • Manufacturer: CS
  • Series: X-Longer
  • Color: Black
  • Product Type: Li-Polymer
  • Battery Type: Li-Polymer
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The Liquid E3 won't power on at all after sitting in a drawer for months — is the battery dead?

A lithium-polymer cell left discharged below roughly 2.5V triggers BMS lockout as a protection measure — the phone will not respond to the power button or show a charging indicator. Plug it into a wall charger (not a USB hub) and leave it for 20–30 minutes without touching it; the charge IC trickle-charges the cell back above the BMS recovery threshold before normal charging begins. If the screen still shows nothing after 30 minutes, check that the charging port and cable are carrying current. Once the phone shows a charging icon, let it reach at least 15% before powering on.

Fast charging stopped working after I fitted the replacement battery — the phone now charges slowly on the same charger.

On the first cycle after a cell swap, the Liquid E3's charge IC sometimes defaults to a conservative constant-current profile while it measures the new cell's impedance. This is normal behaviour — the IC is not accepting the higher charge rate until it has profiled the cell. Complete one full slow charge to 100%, then one full discharge, and reconnect your fast charger. If fast charging still does not engage after that cycle, confirm the charger outputs at least 5V/2A, as the Liquid E3's charge IC requires that minimum to step up from the baseline rate.

The battery percentage on my Liquid E3 keeps jumping — it reads 45%, then jumps to 60%, then drops to 30% within minutes.

Erratic percentage jumps after a cell replacement mean the fuel gauge IC is recalibrating against the new cell's discharge curve and has not yet built an accurate model. The coulomb counter accumulated data over months or years on the degraded original cell, and that data does not map correctly onto a fresh cell with different impedance characteristics. Run two complete cycles — discharge the phone fully until it shuts itself off, then charge uninterrupted to 100% — and the gauge will stabilise. After two cycles, percentage readings should track smoothly without jumps of more than 2–3% between readings.

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