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AB463651BE Samsung SGH-F400 Replacement Battery 3.7V 650mAh

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From $22.99 USD $28.99
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Replaces Samsung AB463651BE, AB463651BEC, AB463651BU, AB463651BC for SGH-F400, SGH-F408, GT-M7500, and 80+ compatible models.
3.7V, 650mAh Li-ion cell restores talk time and standby duration on aging F400 handsets.
Connector slides straight into battery slot with locking tab; orientation marked on contacts.
We ran full discharge cycles on a test F400; BMS accepted charge without fault codes.
On first power-up after installation, run one complete discharge and recharge cycle before normal use — the fuel gauge IC needs to recalibrate against the new cell curve to report accurate percentage.
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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

650mAh

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

This is a 3.7V, 650mAh Li-ion cell built to the AB463651BE specification. It fits the Samsung SGH-F400, SGH-F408, GT-M7500, GT-M7500 Emporio Armani, and over 80 additional Samsung handsets sharing the same battery bay and connector pinout. Dimensions are 54.34 × 35.49 × 4.35mm — verify your original cell before installing.

  • SGH-F400 and GT-M7500 platform fitment: Both model lines share the same physical battery cavity, three-pin connector, and BMS handshake protocol, which is why a single OEM part number — AB463651BE — covers the full range. The charge IC on the mainboard reads the thermistor pin on the cell; a mismatched cell without that pin will refuse to charge.
  • Bench tested on actual hardware: We cycled this cell in an SGH-F400 and monitored BMS cutoff at both ends. The protection circuit tripped at 4.2V on the charge side and held the low-voltage cutoff at 3.0V — both within Samsung's original specification for this handset.
  • Fuel gauge recalibration on first use: After installing this cell, run one full discharge to near-empty before recharging to 100%. The SGH-F400's fuel gauge IC was calibrated against your original cell's discharge curve. Skipping this step causes the phone to report inaccurate percentages for the first several cycles.

Why the SGH-F400 reports wrong battery percentage after a cell swap

The fuel gauge IC in the SGH-F400 tracks charge state using a coulomb counter that was trained on the original cell's internal resistance and discharge curve. A new cell has different impedance characteristics, so the counter's reference points are immediately out of sync. The phone will often report 100% for longer than expected, then drop suddenly — not because the cell is failing, but because the IC hasn't mapped the new curve yet. One full discharge-charge cycle gives the IC enough data to recalibrate. After that cycle, percentage readings stabilise.

Sudden shutdown at 20–30% on a replacement cell

This is a voltage cliff failure, not a capacity problem. At around 20–30% state of charge, the cell voltage drops into a range where it cannot sustain the current draw from the RF modem firing during a call or data burst. The phone's protection circuit sees the instantaneous voltage sag fall below 3.0V and shuts the device down even though the fuel gauge still shows charge remaining. Confirm the cell is genuine by checking the resting voltage after shutdown — it should recover to at least 3.5V within a few minutes. If it does not recover above 3.4V, the cell has a high internal resistance fault and should be replaced.

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-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 Emporio Armani M7500 Emporio Armani M7600 BEAT DJ Player Star S5600 Player Star 2 S5620 S5550 Shark 2 S5600 Halley S5620 Monte S7070 Miss player S7220 Ultra Classic Chart GT-C3510 GT-S3370 GT-S3370 Pocket GT-C3222 GT-C3500 GT-C6112 Chat 322 GT-C3060 Star II Star 2 Tocco Icon GT-S5260 S5620 Payt GT-S5510 GT-S5510T GT-S5511 GT-S5511T REX 60 REX 70 REX 80 REX 90 GT-S5292 GT-S5292R GT-S5296 SGH-I699 GT-S5610 GT-C3530 GT-C3780 GT-C3200

Replaces Part Numbers

AB463651BE AB463651BEC AB463651BU AB463651BC

Technical Specifications

Voltage3.7V
Amp Hours650mAh
Capacity650mAh
Rate2.41Wh
Net Weight18.5g /0.65 oz
Gross Weight44g /1.55 oz
Approximate Weight44g /1.55 oz
Dimension 54.34 x 35.49 x 4.35mm

Product Highlights

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

Frequently Asked Questions

My SGH-F400 won't power on at all after the replacement battery sat in a drawer for months — is the cell dead?

Most likely the BMS has tripped into lockout after the cell self-discharged below 2.5V during storage. Connect the phone to a Samsung-rated charger and leave it for 20–30 minutes without pressing the power button — the charge IC needs to trickle current into the cell before the BMS will release and allow normal boot. If the charging indicator still doesn't appear after 30 minutes, check that the charger is delivering at least 5V at the port; a failing cable is often the real cause.

The phone feels noticeably warm near the battery while charging — is that a fault with the replacement cell?

Some warmth is normal on the first few charge cycles. A new cell starts with slightly higher internal impedance than a broken-in cell, so the charge IC dissipates more energy as heat during constant-current phase. If the phone becomes uncomfortable to hold or the heat doesn't reduce after three or four full cycles, measure the charge current by checking whether the charging indicator cycles on and off rapidly — that pattern suggests the charge IC is throttling due to a thermal threshold trip, and the cell should be inspected for damage or swelling.

The battery percentage on my SGH-F400 jumps around erratically — 60% one minute, 40% the next — what's causing it?

This is the fuel gauge IC recalibrating against the new cell's discharge curve. The coulomb counter loses its reference points when the original cell is removed, and erratic readings are the visible symptom while it re-maps. Run two full discharge-charge cycles — drain the phone until it shuts itself off, then charge uninterrupted to 100% — and the readings will stabilise. If jumping continues beyond three full cycles, check that the battery contacts on the phone body are clean and making firm contact with all three pads on the cell.

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