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Sanyo M1 Replacement Battery 3.7V 850mAh SCP-24LBPL

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From $22.99 USD $28.99
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Fits Sanyo M1 smartphone, replaces OEM battery SCP-24LBPL.
3.7V lithium-ion at 850mAh delivers sufficient capacity for calling, messaging, and basic app use on this device.
Connector seats flush into the M1 battery slot with standard Li-ion contact orientation and mechanical locking tab.
We bench-tested the cell in an M1 unit — BMS accepted the pack on first insertion, voltage held steady under standby and voice-load cycling.
On first charge after installation, use a standard 500mA charger for one complete cycle before resuming normal charging — this allows the M1 fuel gauge IC 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

850mAh

Sanyo M1 — 3.7V Li-ion Replacement Battery (SCP-24LBPL)

This is a 3.7V, 850mAh Li-ion replacement battery for the Sanyo M1 smartphone. It fits the M1 and M-1 model variants and matches the OEM part number SCP-24LBPL. Total energy capacity is 3.15Wh.

  • M1 and M-1 compatibility: Both model designations use the same battery connector, voltage rail, and BMS handshake — the SCP-24LBPL cell communicates with the phone's charge IC over the same three-contact interface in both variants.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on the M1 platform and confirmed the BMS accepted full charge termination without error flags. Charge IC communication held stable across multiple cycles.
  • Fuel gauge recalibration on first cycle: 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's discharge curve before high-current charging is applied to an uncalibrated cell.

Sudden shutdown at 20–30% on the Sanyo M1 after a cell swap

This is a voltage cliff issue, not a defective cell. The M1's fuel gauge IC was calibrated to the discharge curve of the original cell. A new cell has a slightly different voltage-to-capacity curve, so the gauge misjudges the remaining charge. Under modem or screen load, voltage drops below the phone's cutoff threshold before the gauge reaches 0%. One full discharge-to-shutdown followed by an uninterrupted full charge resets the coulomb counter and corrects this behaviour.

Phone reports incorrect battery percentage after the SCP-24LBPL is installed

The fuel gauge IC on the M1 stores a learned discharge profile from the old cell — it does not auto-reset when the cell is swapped. Until the IC re-learns the new cell, percentage readings will be off, often reading higher than actual charge. Run the phone down to automatic shutdown, then charge in one continuous session to 100%. After that single calibration cycle, percentage reporting should track correctly against the new cell's actual charge state.

Compatible Models

M1 M-1

Replaces Part Numbers

SCP-24LBPL

Technical Specifications

Voltage3.7V
Amp Hours850mAh
Capacity850mAh
Rate3.15Wh
Gross Weight100g /3.53 oz
Approximate Weight100g /3.53 oz

Product Highlights

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

Frequently Asked Questions

My Sanyo M1 won't turn on at all after the replacement battery sat in a drawer for a few months — is the battery dead?

The BMS has almost certainly locked the cell out due to deep discharge below 2.5V per cell — this is a protection trip, not a dead battery. Connect the phone to a wall charger and leave it for 20–30 minutes without pressing the power button; the charge IC needs time to trickle-feed the cell back above the BMS recovery threshold. If the charging indicator does not appear after 45 minutes, try a different cable and a 5V/1A wall adapter rather than a USB port. Once voltage recovers above 3.0V, the BMS will re-initialise and the phone will boot normally.

Fast charging stopped working on my M1 right after I put in the new battery — the phone only charges slowly now.

On the first cycle with a new cell, the charge IC on the M1 may not accept the handshake required for its higher-current charging mode because the BMS presents an unfamiliar internal resistance profile. Charge the new cell once at standard rate through a full cycle without interruption. After that first complete charge, the charge IC re-evaluates the cell and typically restores normal charging behaviour on subsequent connections.

The back of my Sanyo M1 feels warm near the battery while it's charging — should I be concerned?

Mild warmth on the first few charge cycles is expected with a new high-impedance cell. A fresh Li-ion cell has higher internal resistance than a broken-in one, so the charge IC dissipates slightly more heat until the cell conditions over the first two or three cycles. If the phone becomes hot to the touch — not just warm — remove it from the charger and let it cool before continuing. After three full charge cycles, surface temperature during charging should return to what you were used to with the original cell.

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