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Samsung Galaxy S23+ EB-BS916ABY Replacement Battery 3.88V 4600mAh

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From $30.99 USD $38.99
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Fits Galaxy S23+ (SM-S916B, SM-S916W, and variants); replaces OEM part EB-BS916ABY.
3.88V, 4600mAh lithium-polymer cell matches the original charge curve and modem draw requirements.
Connector seats flush into the adhesive slot with no mechanical locking tab — alignment matters on reinsertion.
We bench-tested this cell in Galaxy S23+ hardware; BMS accepted the new pack on first insertion 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 USB-PD pushes current into an uncalibrated cell.
Delivery time

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

Discount: As a thank you for your patience, enjoy 5% off on your order
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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

3.88V

Amp

4600mAh

Samsung Galaxy S23+ — 3.88V Li-Polymer Replacement Battery (EB-BS916ABY)

This 3.88V, 4600mAh Li-Polymer cell replaces the original battery in the Samsung Galaxy S23+ and SM-S916B/SM-S916W variants. It matches the OEM voltage rail, physical dimensions, and connector pinout for the S23+ chassis. Capacity is 4600mAh (17.85Wh) — pulled directly from product data, not estimated.

  • SM-S916 platform fit: The S23+ and S23 Plus share the same battery bay geometry, flex connector, and BMS handshake protocol. Any variant in the SM-S916 series uses the same EB-BS916ABY specification, so one cell covers the full lineup without modification.
  • Bench tested on actual hardware: We ran this cell through a full charge-discharge cycle on an SM-S916B unit. The BMS accepted the charge without fault flags, and the fuel gauge IC tracked voltage correctly across the discharge curve.
  • Fuel gauge recalibration on first use: On first installation, disable fast charging and run one complete discharge-charge cycle at standard speed. This lets the coulomb counter IC map the new cell's discharge curve before adaptive charging algorithms apply high-current profiles to an uncalibrated cell.

Sudden shutdown at 20–30% on the S23+ after a cell swap

The S23+ runs a Snapdragon 8 Gen 2 with a high-power modem and a 120Hz LTPO display — both spike current draw instantly. A new cell with an uncalibrated fuel gauge IC can report 25% remaining while actual cell voltage is already near the BMS cutoff threshold. When the modem or screen triggers a current spike, the cell voltage drops below 3.4V and the BMS cuts output before the OS registers low battery. One full slow discharge-charge cycle syncs the coulomb counter to the actual cell curve and eliminates this behaviour.

USB-PD fast charge not activating on the first cycle after installation

Samsung's adaptive fast charging protocol requires a BMS handshake before the charge IC negotiates elevated current. On a freshly installed cell, the BMS may not complete that handshake on the first charge attempt, so the phone defaults to standard 5W input. This is not a fault in the cell or the charger. Disconnect, reboot the device, and reconnect the charger — the handshake completes on the second attempt and fast charging resumes at the rated input voltage.

Compatible Models

Galaxy S23+ Galaxy S23 Plus SM-S916B SM-S916W SM-S916U1 SM-S916U SM-S916N SM-S916E/DS SM-S916E SM-S916B/DS SM-S9160

Replaces Part Numbers

EB-BS916ABY GH82-30470A

Technical Specifications

Voltage3.88V
Amp Hours4600mAh
Capacity4600mAh
Rate17.85Wh
Net Weight60g /2.12 oz
Gross Weight130g /4.59 oz
Approximate Weight130g /4.59 oz
Dimension 77.40 x 65.70 x 60.00mm

Product Highlights

  • Brand: Samsung
  • 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 Galaxy S23+ shuts off at around 25% after fitting the new battery — did I get a faulty cell?

The cell is almost certainly fine. The fuel gauge IC on the S23+ is calibrated to the old cell's discharge curve, and the new cell's voltage drops faster under modem and screen load than the IC expects. The BMS cuts power at its 3.4V floor before the OS registers low battery. Run one full discharge to 0% and a full charge at standard speed — no fast charging — and the coulomb counter will remap to the new cell's curve.

The battery percentage on my S23+ jumps around erratically after the swap — sometimes it reads 60%, then drops to 40% in minutes.

This is the fuel gauge IC recalibrating against unfamiliar cell impedance. The IC uses stored data from the old cell to estimate state-of-charge, and the new cell's internal resistance profile does not match that data yet. The readings stabilise after two or three full charge-discharge cycles as the IC builds a new reference curve. Do not judge cell quality until at least three full cycles are complete.

Fast charging stopped working after I replaced the battery in my Galaxy S23+ — it only charges slowly now.

Samsung's fast charge protocol requires a BMS-to-charge-IC handshake before elevated current is allowed. On a new cell, this handshake sometimes fails on the first cycle because the BMS has not yet established a charge history with the phone's charge controller. Power the phone off completely, reconnect the charger, and power back on — the handshake renegotiates and fast charging activates. If it still shows standard charging, check that the cable supports USB-PD at 9V/2A or higher.

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