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Samsung Galaxy C9 Pro EB-BC900ABE Replacement Battery 3.85V 4000mAh

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From $26.99 USD $33.99
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Fits Samsung Galaxy C9 Pro, Galaxy C9 Pro Duos, and SM-C9000 variants; replaces EB-BC900ABE and EB-BC900ABA.
3.85V, 4000mAh lithium-polymer cell restores full charge cycles on aged or swollen original packs.
Connector seats flush into the factory slot with no modification; locking tab engages on first insertion.
We bench-tested the EB-BC900ABE against the OEM discharge curve; BMS accepted USB-PD handshake on cycle two.
On first charge after installation, disable adaptive fast charging for one complete discharge-charge cycle so the coulomb counter recalibrates to this cell's discharge slope before high-current charging resumes.
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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

3.85V

Amp

4000mAh

Samsung Galaxy C9 Pro — 3.85V Li-Polymer Replacement Battery (EB-BC900ABE)

This is a 3.85V, 4000mAh Li-Polymer battery for the Samsung Galaxy C9 Pro, Galaxy C9 Pro Duos, Galaxy C9 Pro Duos TD-LTE, and SM-C9000. It replaces OEM part numbers EB-BC900ABE and EB-BC900ABA. Physical dimensions are 110.60 × 51.30 × 3.90mm — confirm clearance before installing.

  • C9 Pro and Duos variant fit: The C9 Pro, C9 Pro Duos, and C9 Pro Duos TD-LTE share the same battery bay dimensions, connector pinout, and BMS handshake protocol — all three accept this cell without modification.
  • Bench tested on actual hardware: We ran this battery through charge and discharge cycles on C9 Pro hardware. The BMS communicated correctly with the charge IC, accepted Samsung's fast-charge protocol on cycle two, and held voltage above the cutoff threshold under display and modem load.
  • First-cycle fuel gauge calibration: On first use after installation, disable fast charging and run one full discharge-to-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before the coulomb counter locks in its reference points — skipping this step causes erratic percentage readings early on.

Sudden shutdown at 20–30% on the replacement cell

This is a voltage-cliff problem, not a capacity problem. When the modem transmits or the screen runs at full brightness, current draw spikes sharply. If the fuel gauge IC is still calibrated to the old cell's discharge curve, it misreads the remaining voltage — the phone thinks it has 25% left, but the cell is already near its low-voltage cutoff. The processor receives a hard shutoff signal from the PMIC before the OS can show a warning. One complete discharge cycle with fast charging off corrects the coulomb counter reference and eliminates most of these shutdowns.

Phone not powering on after the battery sat in storage

Li-Polymer cells discharge slowly in storage — if the voltage drops below approximately 2.5V per cell, the BMS enters lockout mode and blocks charging to prevent thermal runaway on a deeply discharged cell. The phone shows nothing when plugged in: no charging animation, no boot screen. Connect the phone to a wall adapter rated at 5V/2A and leave it for 20–40 minutes without pressing anything — the charge IC applies a trickle current that slowly recovers cell voltage back above the BMS unlock threshold. Once the charging animation appears, resume normal charging.

Compatible Models

Galaxy C9 Pro Galaxy C9 Pro Duos Galaxy C9 Pro Duos TD-LTE SM-C9000 SM-C900Y/DS SM-C900F/DS SM-C9008

Replaces Part Numbers

EB-BC900ABE EB-BC900ABA

Technical Specifications

Voltage3.85V
Amp Hours4000mAh
Capacity4000mAh
Rate15.4Wh
Net Weight56g /1.98 oz
Gross Weight91g /3.21 oz
Approximate Weight91g /3.21 oz
Dimension 110.60 x 51.30 x 3.90mm

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 C9 Pro shows 28% battery and then just shuts off — is the new battery faulty?

Almost always not a faulty cell — it's a voltage-cliff issue combined with an uncalibrated fuel gauge IC. The coulomb counter in the phone was mapped to your old cell's discharge curve, so it reports 28% while the replacement cell is already close to its low-voltage cutoff under modem or screen load. Run one full discharge cycle with fast charging disabled, then charge back to 100% without interrupting it. That single calibration cycle eliminates most cliff shutdowns.

Fast charging worked with my old battery but won't trigger on the replacement — it just trickle charges.

The C9 Pro's charge IC negotiates Samsung's proprietary fast-charge handshake on each new BMS it encounters, and on the first cycle it often defaults to standard 5V charging as a precaution. This is normal behaviour. Complete one full standard charge cycle first, then enable fast charging in Settings — the BMS and charge IC complete their handshake on the second cycle and fast charging activates. If it still doesn't trigger after cycle two, check that the cable and adapter both support Samsung's fast-charge protocol.

The battery percentage jumps around erratically — goes from 60% to 45% without any heavy use.

Erratic percentage jumps happen because the fuel gauge IC is still recalibrating its coulomb counter against the new cell's impedance and discharge curve. The old reference data no longer matches the replacement cell's actual voltage-to-capacity relationship, so the IC corrects itself in visible steps rather than smoothly. Do not top up frequently during this phase — let the phone discharge to below 10% and then charge fully to 100% in one uninterrupted session. After two or three complete cycles the percentage readings stabilise.

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