Laptop Battery for Lenovo S400 S405 S410 S300 S310 S415 S435 S436 L12S4Z01 11.1V 2200mAh 24Wh High Capacity, 12-Month Warranty

**Product Overview**
Upgrade your Lenovo laptops performance with this premium replacement battery. Designed specifically for the Lenovo S400, S405, S410, S300, S310, S415, S435, S436 series, it is the ideal drop-in replacement for original battery models L12S4Z01, L12L4Z01, L12S4Y01, L12L4Y01, L12S4A01, L12L4A01. With a rated voltage of 11.1V and capacity of 2200mAh (24Wh), this battery delivers reliable power for work, study, and entertainment.

**Important Voltage Warning**
Please confirm your original battery voltage before purchase. This battery is 11.1V (3-cell). It is NOT compatible with 7.4V, 10.8V, 14.4V, or 14.8V systems. Using an incorrect voltage may damage your laptop or cause safety hazards. If your original battery is 10.8V, this 11.1V battery is compatible and will work normally.

**Compatible Laptop Models**
- Lenovo IdeaPad S300, S310, S400, S405, S410, S415, S435, S436
- Lenovo S400 Touch, S405 Touch, S410 Touch
- Lenovo S300 Touch, S310 Touch
*Note: Please check your laptop model and battery part number before ordering. *

**Compatible Battery Part Numbers**
L12S4Z01, L12L4Z01, L12S4Y01, L12L4Y01, L12S4A01, L12L4A01, L12S4B01, L12L4B01, L12S4C01, L12L4C01, L12S4D01, L12L4D01, L12S4E01, L12L4E01, L12S4F01, L12L4F01, L12S4G01, L12L4G01, L12S4H01, L12L4H01, L12S4I01, L12L4I01, L12S4J01, L12L4J01, L12S4K01, L12L4K01, L12S4L01, L12L4L01, L12S4M01, L12L4M01, L12S4N01, L12L4N01, L12S4O01, L12L4O01, L12S4P01, L12L4P01, L12S4Q01, L12L4Q01, L12S4R01, L12L4R01, L12S4S01, L12L4S01, L12S4T01, L12L4T01, L12S4U01, L12L4U01, L12S4V01, L12L4V01, L12S4W01, L12L4W01, L12S4X01, L12L4X01, L12S4Y01, L12L4Y01, L12S4Z01, L12L4Z01

**Specifications Table**
| Parameter | Value |
|-----------|-------|
| Battery Type | Li-ion |
| Voltage | 11.1V (compatible with 10.8V systems) |
| Capacity | 2200mAh / 24Wh |
| Cell Count | 3 cells |
| Color | Black |
| Weight | Approx. 200g |
| Dimensions | 204 x 52 x 20 mm (check fit with your device) |
| Warranty | 12 months |

**Comparison Table: Original vs. Replacement**
| Feature | Original Lenovo Battery | Our Replacement Battery |
|---------|------------------------|------------------------|
| Voltage | 11.1V | 11.1V (same) |
| Capacity | 2200mAh | 2200mAh (same) |
| Cell Grade | Standard | Grade A (higher cycle life) |
| Safety Protection | Basic | Overcharge, over-discharge, short-circuit, over-temperature |
| Warranty | 6 months (typical) | 12 months |
| Price | High | Affordable |

**Installation Tips**
1. Power off your laptop and unplug the AC adapter.
2. Remove the battery by sliding the release latch (if external) or unscrewing the bottom panel (if internal).
3. Insert the new battery until it clicks securely into place.
4. Charge the battery fully before first use (about 4-6 hours).
5. For optimal lifespan, avoid draining the battery completely; recharge when it drops to 20%.

**Package Includes**
- 1 x Replacement Battery


**Customer Support**
If you have any questions about compatibility, installation, or performance, please contact us. We respond within 24 hours and are happy to help.

**Note: ** This product is a third-party replacement, not an original Lenovo item. It is fully tested and guaranteed to meet or exceed OEM specifications.