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Apple iPhone 12 Mini Replacement Battery 3.83V 2550mAh A2471

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From $35.99 USD $44.99
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Fits Apple iPhone 12 Mini battery slot A2471, restoring full cell capacity after degradation.
3.83V lithium-polymer cell holds 2550mAh — enough to power calls, messaging, apps, and camera on a single charge cycle.
Connector sits flush in the battery cavity with no adhesive tabs; alignment notches prevent backwards insertion.
We ran a full discharge at 0.5C load and logged steady voltage curve; BMS accepted USB-PD handshake on first cycle without fault codes.
On first use after installation, disable fast charging for one complete discharge-charge cycle — this lets the fuel gauge IC recalibrate against the new cell discharge curve before high-current fast charging resumes.
Delivery time

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

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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

3.83V

Amp

2550mAh

Apple iPhone 12 Mini — 3.83V Li-Polymer Replacement Battery (A2471)

This is a 3.83V, 2550mAh lithium-polymer cell built to the A2471 specification for the iPhone 12 Mini. It restores full operational capacity to a device where the original cell has degraded through repeated charge cycles. Fits the iPhone 12 Mini only — not compatible with standard iPhone 12 or any other model in the 12 lineup.

  • iPhone 12 Mini cell spec: The 12 Mini uses a compact form factor that demands a tightly dimensioned cell — 79.30 × 38.00 × 4.80mm. The A2471 part number maps directly to Apple's BMS handshake requirements for this chassis. Any deviation in cell dimensions or connector pinout causes the OS to reject the battery entirely.
  • Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on an iPhone 12 Mini. The BMS accepted the cell without fault codes, and the charge IC engaged at the expected current profile across standard and fast-charge modes.
  • Fuel gauge recalibration on first use: After installation, disable fast charging and run one full discharge-charge cycle before resuming normal use. This allows the fuel gauge IC to map its coulomb counter against the new cell's actual discharge curve — skipping this step causes erratic percentage readings for the first several cycles.

Why the iPhone 12 Mini reports wrong battery percentage after a cell swap

Apple's fuel gauge IC stores a learned discharge curve from the original cell. When a new cell goes in, that stored curve no longer matches the actual voltage-to-capacity relationship of the replacement. The IC keeps using the old model until it recalibrates. One full discharge to automatic shutdown followed by a complete charge to 100% resets the coulomb counter against the new cell and brings percentage reporting back into line.

Sudden shutdown at 20–30% on the replacement cell

This happens when the modem or display draws a high burst of current and the cell voltage drops sharply below the BMS cutoff threshold — even though the fuel gauge still shows charge remaining. It is a voltage cliff, not a capacity problem. The fuel gauge IC has not yet learned where the new cell's voltage drops steeply under load. Run two to three full discharge-charge cycles and the IC recalibrates its low-voltage cutoff model. If shutdowns persist past cycle three, check that cell voltage holds above 3.5V under screen-on load.

Compatible Models

iPhone 12 Mini

Replaces Part Numbers

A2471

Technical Specifications

Voltage3.83V
Amp Hours2550mAh
Capacity2550mAh
Rate9.77Wh
Net Weight33g /1.16 oz
Gross Weight83g /2.93 oz
Approximate Weight83g /2.93 oz
Dimension 79.30 x 38.00 x 4.80mm

Product Highlights

  • Brand: Apple
  • 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

My iPhone 12 Mini powers on fine but the battery percentage jumps around — 45% one minute, 38% the next. Is the new battery faulty?

The cell is almost certainly fine. The fuel gauge IC on the 12 Mini is still running a discharge model calibrated to the old, degraded cell. A new cell with a different internal resistance profile causes the coulomb counter to misread state of charge until it relearns the curve. Run one complete discharge to auto-shutdown, then charge uninterrupted to 100% without fast charging enabled. After that cycle the percentage reading stabilises.

Fast charging stopped working the first time I plugged in after replacing the battery — it just trickle charges now.

On the first charge cycle after a cell swap, the charge IC on the 12 Mini sometimes defaults to a conservative current limit while it profiles the new cell's impedance. This is a one-cycle behaviour, not a fault. Unplug, let the phone discharge to around 20%, then reconnect a USB-PD certified cable and charger. Fast charge should engage normally once the charge IC has logged one complete profile pass on the new cell.

The iPhone 12 Mini won't turn on at all after the replacement battery sat in a drawer for a few weeks before I installed it.

Li-polymer cells in storage self-discharge, and if the cell dropped below approximately 2.5V the BMS trips into a deep-discharge lockout to prevent further drain. Connect the phone to a USB-PD charger and leave it untouched for 30–60 minutes — the charge IC applies a low trickle current to bring the cell back above the BMS re-enable threshold before switching to full charge current. If the charging indicator still does not appear after one hour, measure cell voltage directly at the connector; anything below 2.0V means the cell has dropped below recoverable range.

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