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Samsung SPH-I500 Replacement Battery 3.7V 1400mAh BST119BSEB

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Fits Samsung SPH-I500 smartphone; replaces OEM battery part number BST119BSEB.
3.7V, 1400mAh Li-ion cell delivers adequate capacity for calls, messaging, and basic applications on this early-2000s handset.
Battery slides into the original slot with standard connector orientation; locking tab engages flush against the phone frame.
We bench-tested this cell in the SPH-I500 platform; BMS initialized correctly on first insertion without fault codes or charge delays.
On first use after installation, run one complete discharge-charge cycle without removing the battery—the phone's fuel gauge IC needs to recalibrate its voltage curve against this new cell before interpreting charge state accurately.
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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

1400mAh

Samsung SPH-I500 — 3.7V Li-ion Replacement Battery (BST119BSEB)

This is a 3.7V Li-ion replacement battery rated at 1400mAh (5.18Wh), built to the BST119BSEB specification. It fits the Samsung SPH-I500, an early-2000s clamshell smartphone. Slot it in when the original cell no longer holds voltage under call, screen, or standby load.

  • SPH-I500 fit: The SPH-I500 uses a fixed connector pinout and BMS handshake tied to the BST119BSEB cell format. This replacement matches that pinout and voltage rail so the phone's charge IC recognises the cell and begins charging without a fault code.
  • Bench tested on actual hardware: We ran the battery through a full charge cycle and monitored BMS communication. The protection circuit responded correctly to cutoff at 4.2V and low-voltage lockout, with no spurious disconnection during load.
  • Fuel gauge recalibration on first install: On first use, run the phone from 100% down to automatic shutdown, then charge uninterrupted to full. This lets the fuel gauge IC map the new cell's discharge curve before the OS starts pulling readings from it.

Why the SPH-I500 shuts down suddenly at 20–30% after a cell swap

The SPH-I500's fuel gauge IC stores the old cell's discharge curve in memory. A new cell with a steeper voltage cliff at low charge can drop below the BMS cutoff threshold before the OS reads 0%. The phone sees an apparently healthy percentage, then the voltage collapses under modem or display load and the BMS disconnects the cell. One full discharge-to-shutdown cycle followed by an uninterrupted charge resets the coulomb counter and aligns the gauge to the new cell's actual curve.

Phone reports a stuck or jumping percentage after replacement

The fuel gauge IC on the SPH-I500 uses a learned model of the cell's impedance and capacity. After swapping to a new cell, that model is wrong — the IC is calculating state-of-charge against a degraded curve that no longer exists. This causes the displayed percentage to freeze, jump, or read full when the cell is half-depleted. Force a recalibration by draining the phone to automatic shutdown, then charging continuously to 100% without interruption — the IC resets its reference points at both endpoints.

Compatible Models

SPH-I500

Replaces Part Numbers

BST119BSEB

Technical Specifications

Voltage3.7V
Amp Hours1400mAh
Capacity1400mAh
Rate5.18Wh
Gross Weight100g /3.53 oz
Approximate Weight100g /3.53 oz

Product Highlights

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

Frequently Asked Questions

The SPH-I500 powers on for a second then immediately shuts off — is the new battery dead?

This is almost always a BMS lockout, not a dead cell. If the battery sat in storage deeply discharged, the protection circuit trips when cell voltage drops below roughly 2.5V, and it won't deliver current until it sees a trickle charge to recover. Connect the phone to a charger and leave it for 20–30 minutes without attempting to power it on — the charge IC feeds a low current into the cell until voltage climbs above the BMS re-enable threshold, typically around 3.0V, at which point the phone will boot normally.

The SPH-I500 feels warm near the battery compartment during the first charge with the new cell — is that normal?

A new high-impedance cell generates more heat during the initial charge cycle than a broken-in one. The charge IC on the SPH-I500 pushes a fixed current profile, and a fresh cell's internal resistance converts more of that energy to heat until the first few cycles lower impedance. If the warmth is mild and the phone cools once charging completes, no action is needed. If the case becomes hot to the touch or charging stops early, remove the battery and inspect the contacts for debris or misalignment before retrying.

After installing the replacement battery, the SPH-I500 won't charge past about 80% — what's causing that?

The fuel gauge IC on the SPH-I500 can misread the new cell's capacity ceiling if it hasn't completed a full calibration cycle, causing the charge IC to terminate early based on a corrupted full-charge reference point. This is not a fault in the battery itself. Drain the phone completely to automatic shutdown, then connect it to the charger and leave it untouched until the indicator shows 100% — completing this single uninterrupted cycle resets the IC's full-charge reference to the correct 4.2V endpoint of the new cell.

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