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XTOOL X100 Pad 2 Compatible Battery 7.4V 5000mAh PL3769122-2S

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Replaces XTOOL part number PL3769122-2S for X100 Pad 2 and X100 Pad 2 Pro diagnostic scanners.
7.4V, 5000mAh Li-Polymer delivers full power to the scanner's processor, wireless module, and display during vehicle diagnostics sessions.
Connector slides vertically into the battery slot with a single locking tab; polarity is keyed to prevent reverse installation.
We bench-tested the pack through five full charge cycles on the XTOOL charger; the BMS engaged consistently with zero fault flags.
Export all saved vehicle profiles and diagnostic data before removing the battery — the X100 Pad 2 stores active sessions in RAM.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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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.

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🔹 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.

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⚠️ 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

7.4V

Amp

5000mAh

XTOOL X100 Pad 2 Series — 7.4V Li-Polymer Replacement Battery (PL3769122-2S)

This is a 7.4V, 5000mAh Li-Polymer replacement battery for the XTOOL X100 Pad 2 and X100 Pad 2 Pro automotive diagnostic scanners. It fits both the standard and Auto Key Programmer variants of the X100 Pad 2 line. The OEM part number is PL3769122-2S.

  • X100 Pad 2 and Pad 2 Pro compatibility: Both models share the same battery bay dimensions, connector pinout, and BMS handshake protocol. The 125.80 × 66.00 × 9.00mm cell fits without modification, and the BMS negotiates charge and discharge thresholds identically across all four listed variants.
  • Bench tested on actual hardware: We ran charge cycles on the X100 Pad 2 platform and confirmed the BMS accepts the cell, completes a full charge cycle without fault flags, and holds steady voltage under the processor and display load typical of active OBD sessions.
  • Data export before battery removal: Vehicle profiles and saved fault code records on the X100 Pad 2 are held in RAM backed by the main battery. Pull those records to a USB drive or the XTOOL app before removing the old cell — they will not survive a complete power loss during the swap.

Why the X100 Pad 2 refuses to boot after a battery swap

A freshly installed Li-Polymer cell can sit below the X100 Pad 2's minimum boot voltage if it has self-discharged during storage. The scanner's BMS will not attempt to power the main board until cell voltage clears approximately 3.2V per cell, which is 6.4V across the pack. If the unit shows no response at the power button, connect the OEM charger and leave it for 20–30 minutes before pressing power again. Once the BMS detects voltage above the boot threshold, normal startup resumes.

WiFi and Bluetooth dropping mid-diagnostic session

The X100 Pad 2 runs its wireless radios off the same battery rail as the display and processor. When a degraded cell can no longer hold voltage under combined load, the radio stack is the first subsystem the power manager sheds. You will see the connection drop while the battery indicator still reads 20–30%, because the displayed percentage is calculated from a worn discharge curve, not the actual cell voltage. Replacing the cell restores the voltage headroom the radio needs to stay live. After fitting this battery, recalibrate the indicator by running one full charge-to-discharge cycle before relying on the percentage display.

Compatible Models

X100 Pad 2 X100 Pad 2 Pro X100 PAD2 Auto Key Programmers X100 PAD2 Pro Auto Key Programmers

Replaces Part Numbers

PL3769122-2S

Technical Specifications

Voltage7.4V
Amp Hours5000mAh
Capacity5000mAh
Rate37Wh
Net Weight165g /5.82 oz
Gross Weight205.5g /7.25 oz
Approximate Weight205.5g /7.25 oz
Dimension 125.80 x 66.00 x 9.00mm

Product Highlights

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

Frequently Asked Questions

The X100 Pad 2 won't turn on at all after I put the new battery in — is it dead?

Almost certainly not. Li-Polymer cells lose charge in storage, and the X100 Pad 2 will not boot if the pack voltage is below the BMS boot threshold — roughly 6.4V across both cells. Plug in the charger for 20–30 minutes before pressing the power button. The scanner should respond once the BMS clears the low-voltage lockout.

All my saved vehicle profiles and key programming data disappeared after swapping the battery — where did it go?

The X100 Pad 2 stores vehicle profiles and key records in RAM that is powered by the main battery. When the battery is removed, that data is lost immediately — there is no separate backup cell. Before pulling the old battery next time, export everything to a USB drive or sync it through the XTOOL app. If data is already gone, check whether a cloud backup exists in your XTOOL account before starting fresh.

The scanner's WiFi keeps cutting out mid-session even though the battery indicator shows plenty of charge left — what's happening?

A worn cell cannot hold voltage under the combined draw of the display, processor, and wireless radio. The X100 Pad 2's power manager drops the radio first when voltage sags, even if the percentage gauge still reads high — the gauge tracks a degraded discharge curve, not real cell voltage. Fitting a fresh 5000mAh cell restores the voltage headroom the radio needs. Run one full charge-to-discharge cycle after installation so the BMS recalibrates the percentage display against the new cell's actual capacity.

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