Laptop Battery for HP Pavilion 242 G1 G2, HSTNN-YB4D, VK04, M4 11.4V 41Wh, 6-Cell, High Capacity, 1-Year Warranty

**Product Overview**
This high-quality replacement battery is specifically designed for HP Pavilion 242 G1, G2, and ProBook 440 G1, G2 series laptops. It is a direct drop-in replacement for original battery models HSTNN-YB4D, VK04, M4, 740366-001, and 740366-002. With a capacity of 41Wh (3600mAh) and a voltage of 11.4V, this 6-cell Li-ion battery provides reliable power for your daily tasks, from office work to online classes and media streaming.

**Important Voltage Warning**
Please check your original battery voltage before purchasing. This battery is 11.4V. Do NOT use it if your original battery is 10.8V or 11.1V, as voltage mismatch may cause malfunction or damage. If you are unsure, please contact us with your laptop model or original battery part number.

**Compatible Laptop Models (Not exhaustive) **
- HP Pavilion 242 G1
- HP Pavilion 242 G2
- HP ProBook 440 G1
- HP ProBook 440 G2
- HP ProBook 445 G1
- HP ProBook 445 G2
- HP ProBook 450 G1
- HP ProBook 450 G2
- HP ProBook 455 G1
- HP ProBook 455 G2

**Replaces Original Battery Part Numbers**
HSTNN-YB4D, HSTNN-YB4E, HSTNN-YB4F, VK04, M4, 740366-001, 740366-002, 740366-003, 740366-004, 740366-005, 740366-006, 740366-007, 740366-008, 740366-009, 740366-010, 740366-011, 740366-012, 740366-013, 740366-014, 740366-015

**Specifications Table**

| Parameter | Value |
|-----------|-------|
| Battery Type | Li-ion |
| Voltage | 11.4V |
| Capacity | 41Wh / 3600mAh |
| Cells | 6-cell |
| Color | Black |
| Weight | Approx. 320g |
| Dimensions | 20.5 x 5.5 x 2.1 cm |
| Warranty | 12 months |

**Comparison Table (Original vs Replacement) **

| Feature | Original HP Battery | Our Replacement Battery |
|---------|---------------------|-------------------------|
| Voltage | 11.4V | 11.4V (exact match) |
| Capacity | 41Wh | 41Wh (equal or higher) |
| Cell Count | 6-cell | 6-cell |
| Safety Protection | Yes | Yes (overcharge, short circuit, over-discharge, temp) |
| Price | High | Affordable |
| Warranty | 1 year (limited) | 1 year (full replacement) |

**Installation Tips**
1. Turn off your laptop and unplug the AC adapter.
2. Remove the battery latch or slide the release button to take out the old battery.
3. Insert the new battery until it clicks into place.
4. Charge the battery fully (about 3-4 hours) before first use for optimal performance.
5. If the battery is not recognized, try
a hard reset: disconnect AC, remove battery, hold power button for 15 seconds, then reinstall battery and plug in.

**Safety & Quality**
Each battery undergoes strict quality control testing, including capacity, voltage, and safety checks. The built-in BMS (Battery Management System) ensures stable output and extends battery lifespan. We recommend using this battery with the original HP charger for best results.

**Package Includes**
1 x Replacement Battery
(English)

**Customer Support**
If you have any questions about compatibility, installation, or performance, please contact us. We offer 12-month warranty and 30-day hassle-free returns. Your satisfaction is our priority.