Apple iPhone 6 Plus Replacement Battery 3.82V 2900mAh 616-0765
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Apple iPhone 6 Plus Replacement Battery 3.82V 2900mAh 616-0765 - 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 iPhone 6 Plus Replacement Battery 3.82V 2900mAh 616-0765 - is backordered and will ship as soon as it is back in stock.
Voltage
3.82V
Amp
2900mAh
Apple iPhone 6 Plus — 3.82V Li-Polymer Replacement Battery (616-0765)
This is a 3.82V, 2900mAh Li-Polymer battery for the Apple iPhone 6 Plus (A1522, A1593). It fits the 5.5-inch model only — not the standard iPhone 6. Swap it when the original cell no longer holds a charge or causes unexpected shutdowns.
- iPhone 6 Plus compatibility: The A1522 and A1593 variants share the same 3.82V battery rail, connector pitch, and BMS handshake protocol. This cell matches those electrical requirements exactly, including the NTC thermistor line the charge IC monitors during every session.
- Bench tested on actual hardware: We cycled this cell through full charge and discharge on an iPhone 6 Plus board. The charge IC accepted the BMS handshake without fault codes, and the fuel gauge IC tracked state-of-charge across the complete discharge curve without dropping out.
- Fuel gauge recalibration on first install: After fitting this cell, disable fast charging and run one complete discharge down to auto-shutoff, then charge uninterrupted to 100%. This gives the coulomb counter a clean reference cycle before high-current charging begins on an uncalibrated cell.
Sudden shutdown at 20–30% on the iPhone 6 Plus after a cell swap
This happens because the fuel gauge IC is still calibrated to the old cell's discharge curve. The replacement cell has a different internal resistance profile, so voltage drops faster under modem or display load than the IC expects. When terminal voltage falls below the shutdown threshold — even briefly — the phone cuts power regardless of the percentage shown. One full discharge-to-shutoff cycle followed by an uninterrupted charge lets the coulomb counter remap its curve to the new cell.
Phone warm near the battery compartment during first few charges
A new Li-Polymer cell has higher internal impedance than a broken-in one. The charge IC pushes constant current into higher resistance, and that energy difference becomes heat at the cell surface. This is normal for the first three to five cycles and tapers off as the cell's impedance settles. If the phone stays warm beyond the fifth charge or the back panel becomes uncomfortable to hold, check that no adhesive is trapping heat between the cell and the rear case.
Compatible Models
Replaces Part Numbers
Technical Specifications
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
Why does my iPhone 6 Plus show the wrong battery percentage after fitting the new cell?
The fuel gauge IC stores the discharge curve of the original cell in its coulomb counter. When a new cell goes in, that stored curve no longer matches the actual voltage-versus-capacity relationship of the replacement. The IC reports percentage based on stale data until it observes a full cycle on the new cell. Run one complete discharge to auto-shutoff, then charge straight to 100% without interruption — the IC recalibrates its reference and percentage readings stabilise from the next cycle onward.
The iPhone 6 Plus won't power on at all after the replacement battery sat in a drawer for a few months before installation — what's wrong?
Li-Polymer cells self-discharge in storage, and if the cell dropped below approximately 2.5V, the BMS has entered lockout mode to prevent damage. The phone will not respond to the power button or show a charge screen. Connect it to a wall charger — not a USB port — and leave it for at least 20 minutes before attempting to power on. The charge IC trickle-charges the cell at low current until voltage climbs back above the BMS recovery threshold, after which normal charging resumes.
Fast charging stopped working after I replaced the battery on my iPhone 6 Plus — it only charges slowly now?
On the first cycle after a cell swap, the charge IC sometimes defaults to a conservative constant-current profile while it verifies the new BMS. This is a precautionary handshake, not a fault. Disconnect the cable, power the phone fully off, then reconnect to a certified Apple charger or MFi-certified cable. If fast charging still does not engage after a full power cycle, complete one standard charge-to-100% cycle — this satisfies the charge IC's verification routine and the higher-current profile re-enables on the following charge.
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