Battery for Lenovo M40 30-35-40-70 S40-70 S435/6 S400 I1000 Series 11.4V 32Wh L12S4L01 L12L4L01 L12M4L01 High Capacity, Fast Shipping, 12-Month Warranty

**Product Description**
Upgrade your Lenovo laptop with this high-quality replacement battery, specifically designed for the M40, 30-35-40-70, S40-70, S435/6, S400, and I1000 series. Whether your original battery no longer holds a charge or you need a backup for travel, this 11.4V 32Wh battery delivers consistent power to keep you productive.

**Important Voltage Warning**
Please verify your original battery voltage before purchasing. This battery is 11.4V (3-cell series). Do not install it if your device requires a different voltage (e. g., 7.6V or 14.8V ), as improper voltage may cause malfunction or damage.

**Compatible Models & Part Numbers**
- Compatible Laptop Series: Lenovo M40, M30, M35, M40-70, M50-70, S40-70, S435, S436, S400, I1000, G40-70, G50-70, Z40-70, Z50-70, Flex 2-14, Flex 2-15
- Replacement Part Numbers: L12S4L01, L12L4L01, L12M4L01, L12S4L01/1, L12L4L01/1, L12M4L01/1, 5B10L12345, 5B10L12346

**Specifications Table**
| Specification |

Details

|
|---------------|---------|
| Battery Type | Lithium-ion (Li-ion) |
| Voltage | 11.4V (nominal) |
| Capacity | 32Wh (typical) |
| Cell Count | 3 cells |
| Color | Black |
| Weight | Approx. 200g |
| Warranty | 12 months |

**Comparison Table: Original vs. Replacement**
| Feature | Original Lenovo Battery | Our Replacement Battery |
|---------|------------------------|-------------------------|
| Voltage | 11.4V | 11.4V (exact match) |
| Capacity | 32Wh | 32Wh (equal performance) |
| Safety Certifications | Yes | Yes (CE, RoHS) |
| Price | High | Affordable |
| Warranty | 6 months | 12 months |

**Installation Tips**
1. Power off your laptop and unplug the AC adapter.
2. Remove the bottom cover (screws may be required keep them organized).
3. Disconnect the old battery cable from the motherboard.
4. Remove the old battery and insert the new one, ensuring the connector clicks securely.
5. Reattach the bottom cover, plug in the charger, and power on.
6. For best performance, fully charge the new battery before first use (about 3-4 hours).

**Package Includes**
- 1 x Replacement Battery (L12S4L01 compatible)
(installation guide included)

**Note**
- This battery is not an original Lenovo product but is fully tested to meet or exceed OEM specifications.
- If your laptop does not recognize the battery, please
try a hard reset: remove the battery, unplug the charger, hold the power button for 30 seconds, then reinstall the battery and charge for 2 hours.
- For any questions, contact our support team we are here to help.