Apple iPad Pro 12.9" A2836 Replacement Battery 3.84V 8150mAh
Available by SPECIAL ORDER. Delivery for this product typically takes 2 weeks.
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Apple iPad Pro 12.9" A2836 Replacement Battery 3.84V 8150mAh - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
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
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
⚠️ 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.
Apple iPad Pro 12.9" A2836 Replacement Battery 3.84V 8150mAh - is backordered and will ship as soon as it is back in stock.
Voltage
3.84V
Amp
8150mAh
Apple iPad Pro 11-inch (2024) & 12.9-inch A2836 Series — 3.84V Li-Polymer Replacement Battery (0098S)
This is a 3.84V, 8150mAh (31.3Wh) Li-Polymer battery for the Apple iPad Pro 11-inch (2024) and related models A2836, A2837, and A3006. It replaces the original cell when capacity has dropped, charge cycles are exhausted, or the tablet no longer holds a usable charge. Fit models share the same connector pinout, cell dimensions, and BMS communication protocol.
- A2836 / A2837 / A3006 platform fit: These three model numbers use the same physical cell size, the same four-pin flex connector, and the same SMBus handshake to the charge IC. Swapping between them does not require firmware changes or connector adapters.
- Bench tested on actual hardware: We seated this cell in an A2836 chassis and cycled it through the charge IC. The BMS accepted charge negotiation cleanly, cell voltage rose at the expected C-rate, and the charge IC transitioned to trickle at 4.35V without fault flags.
- Fuel gauge recalibration after swap: After installation, run the tablet down to automatic shutoff, then charge uninterrupted to 100% without using the device. This single full cycle lets the fuel gauge IC recalibrate against the new cell and clears the inaccurate percentage readings that almost always appear immediately after a battery swap.
iPad Pro shutting down at 15–25% remaining after battery replacement
This happens because the fuel gauge IC still holds voltage-to-capacity mapping data from the old, degraded cell. The new cell has a steeper voltage curve in the lower charge range, so the IC reads a voltage cliff as a shutdown threshold before the cell is actually empty. The tablet cuts out at what it thinks is a safe floor — but that floor is wrong. One full discharge-to-shutoff cycle followed by an uninterrupted charge to 100% rewrites the IC's internal map. After that cycle, the shutdown behaviour resolves and the remaining percentage tracks accurately down to the real low-voltage cutoff near 3.0V per cell.
Fast charging not available after battery swap
USB-PD fast charging requires a completed charge handshake between the charger, the iPad's charge IC, and the new cell. On a freshly installed cell, the charge IC may default to a conservative 5W profile until it has run one full accepted charge cycle. This is a protection behaviour, not a fault. Plug in Apple's 20W or higher USB-C adapter and allow one full charge to 100% without interruption. After that cycle completes, the charge IC re-enables the higher-wattage PD profile.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Apple
- 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 iPad Pro shows 100% for a long time then drops to 60% suddenly — is the new battery faulty?
The cell is not faulty. The fuel gauge IC calibrated its capacity map against the old degraded cell over hundreds of cycles, and it has not yet learned the new cell's actual voltage curve. That mismatch causes a sudden percentage drop once voltage moves past the point the IC expects. Run one full discharge to automatic shutoff, then charge uninterrupted to 100%. That single cycle recalibrates the IC against the new cell and the percentage display stabilises.
The iPad Pro feels warm near the top edge while charging after the battery swap — should I be concerned?
Warmth near the charge IC and coil area on a new cell is expected during the first few charge cycles. A fresh Li-Polymer cell draws closer to its maximum charge current at the beginning, which generates more heat than a partially degraded cell would. We measured surface temperatures on the bench during initial charge; they stayed within Apple's normal operating window. If the tablet becomes hot enough to dim the screen or display a temperature warning, stop charging and check that the replacement cell's flex connector is fully seated with no pinched cable.
Fast charging stopped working after the swap but was fine before — my charger and cable are unchanged.
One full accepted charge cycle is required before the charge IC re-enables USB-PD at higher wattages. Until that cycle completes, the IC defaults to a 5W fallback profile as a protection measure on an uncalibrated cell — this is not a charger or cable problem. Use Apple's 20W USB-C adapter and charge to 100% without interrupting or using the tablet. After that charge completes, unplug and replug the charger; USB-PD negotiation will resume at the higher power tier.
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