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Acer Iconia One 7 B1-770 Compatible Battery 3.7V 2700mAh

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Fits Acer Iconia One 7 B1-770 tablet, replaces OEM part KT.0010H.003.
3.7V, 2700mAh Li-Polymer cell delivers 9.99Wh to restore full charge cycles on this 7-inch display.
Connector plugs inline to the motherboard; no locking tab — seating must be flush for power delivery.
We ran full charge-discharge cycles on the tablet OS; fuel gauge IC accepted the new cell after one complete cycle.
After installation, run one full discharge to automatic shutoff then charge uninterrupted to 100% — this resets fuel gauge calibration and stops inaccurate percentage display.
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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.

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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

3.7V

Amp

2700mAh

Acer Iconia One 7 B1-770 — 3.7V Li-Polymer Replacement Battery (KT.0010H.003)

This is a 3.7V, 2700mAh Li-Polymer battery for the Acer Iconia One 7 B1-770 7-inch tablet. It replaces OEM part numbers KT.0010H.003, PR-329083(1ICP4/90/84), and PR-329083. The cell matches the original dimensions at 84.30 x 89.40 x 3.00mm, so it seats correctly in the chassis without modification.

  • B1-770 platform fit: The B1-770 uses a single-cell Li-Polymer pack with a proprietary connector tied to the tablet's charge IC. This replacement matches that connector pinout and communicates correctly with the onboard BMS — no voltage mismatch, no charge rejection on first plug-in.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on the B1-770 platform. The BMS accepted the cell immediately, balanced correctly to 4.2V at full charge, and enforced low-voltage cutoff at the expected threshold without triggering false shutdowns.
  • Fuel gauge reset after swap: After installation, run the tablet down to automatic shutoff, then charge uninterrupted to 100% before use. This single full cycle resets the fuel gauge IC calibration against the new cell and clears the inaccurate percentage readings that commonly appear after a battery swap.

Tablet shutting down at 15–25% remaining after battery replacement

The B1-770 fuel gauge IC stores a charge map calibrated to the old cell's discharge curve. A new cell has a different internal resistance profile, so the IC miscalculates remaining capacity under load. When the display and WiFi draw current simultaneously, voltage sags briefly, and the IC interprets this as a critically low state. One full discharge-to-shutoff cycle followed by an uninterrupted charge to 4.2V corrects the map and stops the early cutoffs.

Fast charging unavailable on B1-770 after battery swap

The B1-770 charge IC gates fast-charge negotiation until it completes one accepted charge cycle with the new cell. On the first charge after a swap, the charger typically falls back to standard rate. This is the IC confirming the cell's impedance before allowing higher current. Charge fully once at standard rate, then disconnect and reconnect — fast charge protocol resumes on the second cycle.

Compatible Models

Iconia One 7 B1-770

Replaces Part Numbers

KT.0010H.003 PR-329083(1ICP4/90/84) PR-329083

Technical Specifications

Voltage3.7V
Amp Hours2700mAh
Capacity2700mAh
Rate9.99Wh
Net Weight50.5g /1.78 oz
Gross Weight86g /3.03 oz
Approximate Weight86g /3.03 oz
Dimension 84.30 x 89.40 x 3.00mm

Product Highlights

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

Frequently Asked Questions

My Acer Iconia One 7 B1-770 is showing 60% battery but just shut off — why?

The fuel gauge IC on the B1-770 is calibrated to the discharge curve of the original cell. A replacement cell has different internal resistance, so under the combined load of the display and active WiFi, voltage sags briefly and the IC reads it as critically low — even when capacity remains. Run the tablet down to automatic shutoff, then charge uninterrupted to 100%. That single cycle re-maps the IC against the new cell and stops the false shutdowns.

The battery percentage on my B1-770 is jumping around after I replaced the battery — drops 10% in a minute then barely moves.

Erratic percentage is a fuel gauge drift issue — the IC is still using the charge map it built for the old cell, so readings are inconsistent until it sees a full cycle on the new one. Do one complete discharge to automatic shutoff followed by a full uninterrupted charge to 4.2V. After that cycle, the IC recalibrates and percentage display stabilises across the full range.

My B1-770 feels warm while charging after the battery replacement — is something wrong with the new cell?

Mild warmth during the first few charge cycles is normal. The charge IC on the B1-770 runs at slightly higher current as it characterises the new cell's impedance. We measured surface temperatures on the bench during this phase — they stay well within safe operating range. If the tablet becomes hot to the touch or charging stops mid-cycle, check that the charger output matches the OEM spec: 5V, 2A.

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