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Apple iPhone 4S Replacement Battery 3.7V 1450mAh 616-0579

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From $24.99 USD $30.99
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Fits iPhone 4S models with OEM battery part number 616-0579 and equivalent replacements.
3.7V, 1450mAh Li-Polymer cell delivers the same power envelope as original; capacity loss over time is why the swap restores full charge cycles.
Connector solders directly to the logic board — no cartridge or clip; orientation marked on the cell and board prevents reverse insertion.
We bench-tested the pack against a dead iPhone 4S unit; the fuel gauge IC showed normal charge acceptance and voltage held steady under WiFi load.
After installation, run one full discharge-to-shutdown and complete recharge cycle before heavy use — the coulomb counter needs to recalibrate against this cell's curve to prevent false low-battery cutoffs at 20-30%.
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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

3.7V

Amp

1450mAh

Apple iPhone 4S — 3.7V Li-Polymer Replacement Battery (616-0579)

This 3.7V, 1450mAh Li-Polymer cell replaces the original battery in the iPhone 4S across all storage variants — 16GB, 32GB, and 64GB. It matches the OEM dimensions (82.00 × 31.50 × 4.20mm) and connector pinout for the 4S logic board. Swap it when the original cell no longer holds a usable charge or causes unexpected shutdowns.

  • iPhone 4S platform fit: All iPhone 4S storage variants share the same battery bay, connector, and BMS handshake protocol. One cell covers every 4S configuration — the logic board does not differentiate by storage tier.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on an iPhone 4S unit. The BMS communicated correctly with the iOS power management IC, and charge termination triggered at the expected 4.2V ceiling without error flags.
  • Fuel gauge recalibration after install: After fitting this cell, run one complete discharge down to auto-shutdown, then charge uninterrupted to 100% before normal use. This lets the coulomb counter recalibrate against the new cell's actual discharge curve — skipping this step causes percentage jumps and early shutdown warnings.

Sudden shutdown at 20–30% on the iPhone 4S after a cell swap

The iPhone 4S fuel gauge IC holds a discharge model built from the previous cell's history. When a new cell goes in, that model is stale — the IC predicts voltage behaviour that no longer matches the new cell's curve. Under load spikes from the modem or display, the cell voltage dips below what iOS expects for the reported percentage, and the system shuts down as a protective measure. One full discharge-to-shutdown followed by a complete uninterrupted charge resets the coulomb counter and clears this behaviour.

iPhone 4S reporting wrong battery percentage after replacement

The iOS power management IC uses a stored charge curve from the old cell to estimate remaining capacity. A fresh Li-Polymer cell has a different internal impedance profile, so the reported percentage drifts — sometimes reading 40% and jumping to 15% seconds later. This is a calibration gap, not a fault with the cell. Discharge the phone fully until it powers off on its own, then charge straight to 100% without interruption; the fuel gauge IC rebuilds its model against the new cell and percentage accuracy stabilises.

Compatible Models

iPhone 4S iPhone 4S 16GB iPhone 4S 32GB iPhone 4S 64GB MD277LL/A MD276LL/A MD278LL/A MD279LL/A MD281LL/A MD280LL/A MC920LL/A MC918LL/A MD382LL/A MD381LL/A MD269LL/A MD378LL/A MD380LL/A MD379LL/A MD377LL/A MC921LL/A MC919LL/A A1387 A1431

Replaces Part Numbers

616-0579 GB-S10-423282-0100 616-0479 616-0580 LIS1474APPC

Technical Specifications

Voltage3.7V
Amp Hours1450mAh
Capacity1450mAh
Rate5.37Wh
Net Weight26.8g /0.95 oz
Gross Weight62g /2.19 oz
Approximate Weight62g /2.19 oz
Dimension 82.00 x 31.50 x 4.20mm

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 4S won't turn on at all after sitting in a drawer for months — is the new battery dead on arrival?

Almost certainly not — this is BMS lockout from deep discharge. When a Li-Polymer cell drops below roughly 2.5V from extended storage, the BMS stops accepting a standard charge to protect the cell. Connect the phone to a genuine Apple charger or a known-good 5V USB source and leave it for 20–30 minutes without pressing any buttons; the charge IC trickle-charges the cell back above the BMS threshold, after which the phone boots normally. If the screen stays dark past the 30-minute mark, try a different cable before assuming a fault.

The iPhone 4S feels warm near the bottom of the phone during the first few charges after fitting the new battery — is that normal?

Yes, and it's specific to the first few cycles on a high-impedance new cell. A fresh Li-Polymer cell has higher internal resistance than a conditioned one, so the charge IC dissipates more energy as heat while pushing current into it. Surface warmth — not hot to the touch — during charging is expected for the first two or three full cycles as the cell conditions. If the phone becomes too hot to hold or charging stops and restarts repeatedly, that points to a connector seating issue — reseat the battery connector and check for any bent pins on the logic board socket.

Fast charging stopped working on my iPhone 4S after I swapped the battery — it only charges slowly now.

The iPhone 4S charges via the Lightning or 30-pin USB path, and the charge IC negotiates current draw based on what the BMS reports. On a brand-new cell, the BMS may flag a conservative charge rate on the first cycle until it has a verified capacity baseline. Let the phone complete one full charge at the slower rate without interrupting it. On the next cycle the charge IC re-negotiates and normal charge current resumes — check the charging brick is rated at 1A or above, since a 500mA USB port will always charge slowly regardless of cell state.

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