# Genuine L17D2P31 Battery for Lenovo Yoga Book C930 YB-J912F
## Product Overview
Is your dual-screen laptop losing charge quickly or shutting down unexpectedly? Revive your device’s battery life with this 100% original **L17D2P31 battery** replacement. Specially engineered for the premium Lenovo Yoga Book C930 series, this high-quality Lithium-Polymer OEM battery guarantees factory-level uptime and reliable daily performance.
Don’t risk damaging your thin-and-light laptop with cheap, uncertified third-party copycat batteries. Opting for a genuine **L17D2P31 battery** ensures absolute safety, perfect power management calibration, and long-term lifespan.
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## 🔍 Technical Specifications
Please cross-verify your original battery label and part numbers before placing your order:
| Feature | Specification |
| :— | :— |
| **Battery Model** | **L17D2P31** |
| **Lenovo FRU / Part Number** | **SB18C21784**, 5B10Q81395 (or fully compatible equivalents) |
| **Battery Type** | Lithium-Polymer (Li-Po) |
| **Voltage** | 7.7V |
| **Capacity** | 35.8Wh / 4650mAh |
| **Compatible Laptop Model** | Lenovo Yoga Book C930 (Model: **YB-J912F**, YB-J912L) |
| **Condition** | 100% Genuine OEM / Original Brand New |
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## ✨ Why Choose This Genuine Lenovo L17D2P31 Battery?
### 1. 100% Original OEM Safety First
Premium laptops require stable voltage regulation. This genuine **L17D2P31 battery** is manufactured with top-tier internal cells and a built-in protection circuit board (PCB) to protect your device against overheating, overcharging, and short-circuiting.
### 2. Perfect Compatibility & Fit
Because the Yoga Book C930 features an ultra-thin chassis, aftermarket batteries often fail to fit or swell prematurely. This original OEM part aligns perfectly with your internal screw mounts and links seamlessly to the motherboard power connector with zero modification required.
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## ⚠️ Essential Buying Guide & Installation Advice
> **Important Reminder:** The Lenovo Yoga Book (1st Gen, YB1-X90F/X91F) uses a completely different battery model.
1. **Verify Your Laptop Model:** This battery is strictly designed for the **Yoga Book C930 (Dual Screen with E-Ink, Model YB-J912F)**.
2. **Match the Part Numbers:** Open your back case and check if your old battery says **L17D2P31** or FRU **SB18C21784**.
3. **Conditioning New Batteries:** For optimal performance, charge the new battery to 100%, then discharge it down to 10% for the first 3 cycles to calibrate the system’s power management chip.
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## 📦 Shipping & Warranty Details
* **Secure Shockproof Packaging:** Packed in anti-static shielding bags and placed inside a padded, reinforced box to ensure safe transit.
* **Tested Before Dispatch:** Every battery undergoes voltage and capacity inspections prior to shipping.
* **Warranty Support:** Includes a **90-Day Replacement Warranty** against manufacturing defects (does not cover physical damage or improper DIY installation).
