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Lenovo Yoga Slim 7 15 L19C4PF2 Replacement Battery 15.36V 4500mAh

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From $106.99 USD $128.99
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Fits Lenovo Yoga Slim 7 15 and Yoga Slim 7-15IMH05 models using L19C4PF2, 5B10X18187, L19M4PF2, SB10X18189, or SB10X18190 OEM batteries.
15.36V and 4500mAh capacity delivers 69.12Wh — matches factory output for full-day ultrabook operation without throttling.
Connector slides straight into the slot with single locking tab; orientation is keyed and seats flush against the retention bracket inside the chassis.
We bench tested the cell at full 15.36V output under sustained 45W load draw; the BMS held regulation within 0.08V across five discharge cycles with zero cutoff events.
After installation, run one full discharge to hibernation-cutoff then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears false health warnings that appear after cell swaps on Lenovo firmware.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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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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⚠️ 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

15.36V

Amp

4500mAh

Lenovo Yoga Slim 7 15 / 7-15IMH05 — 15.36V Li-Polymer Replacement Battery (L19C4PF2)

This is a 15.36V, 4500mAh (69.12Wh) Li-Polymer replacement battery for the Lenovo Yoga Slim 7 15 and Yoga Slim 7-15IMH05 ultrabooks. It matches OEM part numbers L19C4PF2, 5B10X18187, L19M4PF2, SB10X18189, and SB10X18190. If your original cell has degraded or no longer holds a usable charge, this unit replaces it directly.

  • Yoga Slim 7 15 and 7-15IMH05 compatibility: Both models share the same 15.36V power rail, physical footprint, and BMS handshake protocol. The connector pinout and EEPROM communication are identical across this generation, so one cell covers the full range.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on the Yoga Slim 7 platform and confirmed the BMS negotiated correctly, reported accurate state-of-charge, and held voltage under sustained CPU and display load without tripping a premature cutoff.
  • Post-install calibration on the Yoga Slim 7: After fitting this cell, run one full discharge until the laptop hibernates on its own, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap on this platform.

BIOS reporting battery health as poor immediately after replacement

The Yoga Slim 7's BIOS reads health data from the battery's EEPROM at every boot. When a new cell arrives, that EEPROM carries rated chemistry data that hasn't yet been matched to actual charge cycles on this machine. The BIOS flags this mismatch as degraded health — it's a data gap, not a fault with the cell. One full discharge-to-hibernate followed by an uninterrupted charge to 100% gives the firmware enough data to recalculate and clear the warning.

Laptop shutting down at 20–30% shown on the gauge after swap

This happens when the fuel gauge IC still holds calibration data from the old, degraded cell. Under combined CPU and display load, the new cell's actual voltage curve doesn't match the IC's stored model, so the system hits a low-voltage cutoff while the gauge still shows charge remaining. It's not a fault with the replacement — the fuel gauge needs two or three full discharge-and-charge cycles to recalibrate against the new cell's chemistry. After three complete cycles, the reported percentage and the actual cutoff point will align.

Compatible Models

Yoga Slim 7 15 Yoga Slim 7-15IMH05

Replaces Part Numbers

L19C4PF2 5B10X18187 L19M4PF2 SB10X18189 SB10X18190

Technical Specifications

Voltage15.36V
Amp Hours4500mAh
Capacity4500mAh
Rate69.12Wh
Net Weight274.6g /9.69 oz
Gross Weight534.6g /18.86 oz
Approximate Weight534.6g /18.86 oz
Dimension 310.90 x 77.35 x 7.20mm

Product Highlights

  • Brand: Lenovo
  • 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

My Yoga Slim 7 shows 0% or "unknown battery" in Windows right after fitting the new cell — is the battery dead?

No. The fuel gauge IC in the Yoga Slim 7 loses its reference point when the old cell is removed and hasn't yet mapped the new cell's voltage curve. Windows reports 0% or unknown until the IC completes its first read cycle. Plug in the charger, let the laptop boot fully, and leave it on charge for at least 30 minutes — the percentage will populate once the controller has a stable voltage reading to work from.

The replacement cell won't charge past 80% no matter how long it stays plugged in — what's blocking it?

This is a BIOS-controlled charge limit, not a battery fault. Lenovo's Vantage software and firmware on this platform include a "Conservation Mode" setting that caps charging at 80% to reduce long-term cell stress. Open Lenovo Vantage, go to Power, and check the Battery Charge Threshold or Conservation Mode toggle — disable it and the cell will charge to 100%.

Windows reports this battery as 69Wh but the system info screen shows a lower Wh figure — which one is correct?

The lower figure in system info is pulled from the EEPROM on the original (now removed) cell, which Windows cached. The 69.12Wh rating in this listing matches the actual chemistry of the replacement cell. Run one full discharge cycle to hibernate-cutoff, then charge to 100% — the BIOS will rewrite the stored Wh value from the new cell's EEPROM data and both figures will match at 69Wh.

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