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Samsung SGH-F400 Compatible Battery AB463651BE 3.7V 950mAh

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Fits Samsung SGH-F400 and compatible models; replaces OEM part AB463651BE.
3.7V, 950mAh lithium-ion cell restores full charge cycles on mid-2000s Samsung phones.
Connector slides vertically into the battery slot with a single locking tab.
We ran full discharge cycles on a SGH-F408 test unit; BMS accepted charge without fault codes.
On first insertion, let the fuel gauge IC complete one full discharge-charge cycle before heavy use—the phone's coulomb counter needs to recalibrate against the new cell's discharge curve.
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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

950mAh

Samsung SGH-F400 / GT-M7500 Series — 3.7V Li-ion Replacement Battery (AB463651BE)

This is a 3.7V, 950mAh Li-ion replacement battery for the Samsung SGH-F400 and compatible models including the SGH-F408 and GT-M7500 Emporio Armani. It replaces OEM part numbers AB463651BE, AB463651BEC, AB463651BU, and AB463651BC. Slot it into any device on the fit list and the phone powers on as expected.

  • SGH-F400 and GT-M7500 platform fit: These models share the same battery bay dimensions, connector pinout, and 3.7V nominal voltage rail. The BMS handshake requirements across this group are identical, so one cell covers all of them without modification.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the SGH-F400. The BMS accepted charge current from the first cycle, protection cutoffs triggered correctly at both ends of the voltage range, and the phone did not flag any battery warnings.
  • Fuel gauge recalibration on first use: Disable fast charging for the first complete discharge-charge cycle after fitting this battery. The fuel gauge IC on these phones calibrates its discharge curve during that first cycle. Running a high current into an uncalibrated cell causes the percentage readout to drift and can trigger premature low-battery warnings on subsequent cycles.

Sudden shutdown at 20–30% on the SGH-F400

This shutdown pattern is a voltage cliff issue, not a capacity fault. Under peak load — screen on, active call, or data transfer — the cell voltage drops sharply below the BMS cutoff threshold even though the fuel gauge still reads 20–30%. An aged or storage-depleted cell has higher internal resistance, so voltage sags faster under load than the coulomb counter predicts. After one full recalibration cycle, the fuel gauge IC aligns its model to the actual discharge curve of the new cell, and the shutdowns stop. If they continue past two full cycles, check that the battery connector pins are fully seated and making clean contact.

Phone will not power on after the battery sat in storage

Li-ion cells that self-discharge below approximately 2.5V per cell trigger a BMS lockout — the protection circuit cuts output to prevent damage, and the phone will not respond to the power button. Connect the phone to a charger and leave it for 15–20 minutes before pressing power. The charge IC trickle-charges the cell back above the BMS re-enable threshold, which sits around 2.8–3.0V, at which point the circuit resets and the phone will boot normally. If the screen shows no charging indicator after 20 minutes on charge, try a different cable — a high-resistance connection may not be delivering enough current to wake the BMS.

Compatible Models

SGH-F400 SGH-F408 GT-M7500 GT-M7500 Emporio Armani GT-S5600 GT-S7220 Lucido SGH-P260 SGH-L708 GT-S5600 Blade Blade S5600 Blade SGH-F278 SGH-F309 GH-J800 SGH-J808 SGH-J808E SGH-L700 SGH-L708E GT-M7600 GT-M7603 GT-M3318C GT-S5603 GT-S3650 GT-S3653 GT-S3830U SGH-S359 GT-C5510U GT-S5608U SGH-F339 GT-S5630C SGH-S239 GT-B3410 GT-C6112 GTS3650 GT-S5560 GT-S5620 Glamour S7070 Genio Qwerty S3650 Corby S7070 Diva SGH-F278I SGH-J800 GT-C3322 Preston S5600 SGH-P220 SGH-P270 Player Light Player Star 2 GT-S3370 GT-S3370 Pocket GT-C3222 GT-C3500 GT-C3510 Chat 322 GT-C3060 Star II Star 2 Tocco Icon GT-S5260 S5620 Payt REX 60 REX 70 REX 80 REX 90 GT-S5292 GT-S5292R GT-S5296 SGH-I699 GT-S5610 GT-C3530 GT-C3780 GT-C3550 GT-C3200

Replaces Part Numbers

AB463651BE AB463651BEC AB463651BU AB463651BC

Technical Specifications

Voltage3.7V
Amp Hours950mAh
Capacity950mAh
Rate3.52Wh
Net Weight19g /0.67 oz
Gross Weight44g /1.55 oz
Approximate Weight44g /1.55 oz
Dimension 54.20 x 35.65 x 4.65mm

Product Highlights

  • Brand: Samsung
  • Manufacturer: CS
  • Series: X-Longer
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The battery percentage on my SGH-F400 is jumping around after I fitted the new cell — is something wrong with it?

Nothing is wrong with the cell. The fuel gauge IC on the SGH-F400 stores a discharge curve calibrated to the old battery, and the new cell has a different internal resistance profile, so the percentage readout loses accuracy until it recalibrates. Run one complete discharge down to auto-shutdown and charge back to 100% without interruption. After that cycle, the coulomb counter resets its model to the new cell and the percentage stabilises.

My SGH-F400 feels warm near the battery compartment during the first few charges — is the charge rate too high?

This is normal on the first one or two cycles with a new cell. A fresh Li-ion cell starts with slightly higher internal impedance than a conditioned one, so it generates a bit more heat as the charge IC pushes current in. The warmth should reduce noticeably after two full charge cycles as impedance drops. If the phone is still warm to the touch after three full cycles, check that the battery cover is seated flush — a raised cover can restrict heat dissipation and amplify the effect.

My SGH-F400 shuts off at around 25% every time I make a call — the battery was fine for browsing but cuts out under heavier use.

This is a voltage sag failure, not a percentage accuracy issue. An active call spikes current draw from the modem, pulling the cell voltage down sharply. If the cell voltage drops below the BMS cutoff threshold — typically around 3.0V under load — the phone shuts off even though the fuel gauge still reads 25%. Complete one full recalibration cycle: discharge to auto-shutdown, then charge uninterrupted to 100%. This aligns the fuel gauge model to the actual discharge curve of the new cell so the BMS and the percentage readout agree under load.

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