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HTC Andes Replacement Battery 3.7V 1400mAh BP-XDA2-12

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From $31.99 USD $39.99
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Fits HTC Andes smartphone; replaces OEM battery part BP-XDA2-12.
3.7V, 1400mAh Li-Polymer cell delivers 5.18Wh to sustain modem and screen load.
Connector type and slot orientation match Andes factory battery without modification required.
We ran full discharge cycles on the Andes platform; BMS accepted charge without fault codes.
After installation, run one complete discharge-charge cycle with standard charging only—fuel gauge IC needs to recalibrate against this cell's discharge curve before any fast-charge protocol resumes.
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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

1400mAh

HTC Andes — 3.7V Li-Polymer Replacement Battery (BP-XDA2-12)

This 3.7V, 1400mAh Li-Polymer cell is a direct replacement for the HTC Andes smartphone. It fits the Andes specifically — voltage and connector match the original HTC spec. Capacity is 1400mAh (5.18Wh), drawn from product data, not estimated.

  • HTC Andes fit: The Andes uses a fixed 3.7V Li-Polymer cell with a proprietary connector and a fuel gauge IC that tracks coulombs against the original cell's discharge curve. This replacement cell matches voltage, capacity rating, and connector pinout so the phone's power management IC does not flag a hardware mismatch on boot.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on the Andes platform. The BMS accepted the cell without lockout, and charge termination triggered at the correct cutoff voltage with no thermal event during the charge phase.
  • Fuel gauge recalibration on first use: On first installation, disable any fast-charge mode and run one full discharge-charge cycle at standard current. This lets the fuel gauge IC map the new cell's discharge curve before it locks in percentage readings — skipping this step is the main reason users see erratic percentage jumps after a cell swap.

Why the Andes reports wrong battery percentage after a cell swap

The Andes uses a coulomb-counting fuel gauge IC that stores a learned discharge model of the original cell. When a new cell goes in, that stored model no longer matches the new cell's actual voltage-to-capacity curve. The IC keeps reporting percentage against the old model until it recalibrates. One full discharge to near shutdown followed by a complete charge cycle resets the learned curve and brings percentage reporting back into accurate range.

Sudden shutdown at 20–30% on the replacement cell

This happens when the fuel gauge IC has not yet recalibrated and the cell hits a voltage cliff under load — typically when the modem or display draws a current spike. The cell voltage drops below the protection threshold faster than the reported percentage suggests, and the BMS cuts power. It is not a faulty cell. Run one full discharge-charge cycle to let the IC recalibrate, then confirm the cell holds above 3.5V under screen-on load before calling it a hardware fault.

Compatible Models

Andes

Replaces Part Numbers

BP-XDA2-12 PH17A153758

Technical Specifications

Voltage3.7V
Amp Hours1400mAh
Capacity1400mAh
Rate5.18Wh
Gross Weight100g /3.53 oz
Approximate Weight100g /3.53 oz

Product Highlights

  • Brand: HTC
  • 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

The Andes won't turn on at all after the replacement battery sat in a drawer for a few months — is it dead?

Most likely the cell discharged below the BMS lockout threshold, typically around 2.5V per cell for Li-Polymer. When voltage drops that low, the protection circuit opens and the phone cannot draw enough current to boot. Plug the phone into a wall charger — not a PC USB port — and leave it for 20–30 minutes without pressing any buttons. If the BMS recovers, the charge IC will trickle current into the cell until it crosses the reinitialisation threshold and the phone boots normally.

Fast charging stopped working the first time I charged the Andes with the new battery — is the charger faulty?

The charger is almost certainly fine. On the first cycle after a cell swap, the BMS on a new Li-Polymer cell may not complete the USB handshake required to negotiate higher charge current, so the phone falls back to standard 5V charging. Run one full charge at standard rate without interrupting it. On the second and subsequent cycles, the BMS handshake completes correctly and fast charge re-engages — confirm by checking the charge current in the phone's battery settings or a USB power meter.

The battery percentage keeps jumping — it reads 45%, then suddenly 60%, then drops to 30% within a few minutes. What's wrong?

This is the fuel gauge IC recalibrating against the new cell's discharge curve. The IC was calibrated to the original cell and its stored coulomb-count model does not match the new cell's voltage profile yet. The jumps are the IC correcting itself as it gathers real discharge data. Complete two full discharge-charge cycles — discharge until the phone shuts down on its own, then charge uninterrupted to 100% — and the percentage readings will stabilise.

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