Battery for Dell Precision M4600 M4700 M4800 M6600 M6700 M6800 FV993 FJJ4W 11.1V 7800mAh 86Wh High Capacity Li-ion 1-Year Warranty

**Product Overview**
Upgrade your Dell Precision workstation with a reliable, high-capacity replacement battery. Whether you are a mobile engineer, graphic designer, or field technician, this battery provides the consistent power you need to keep your M4600, M4700, M4800, M6600, M6700, or M6800 running through long work sessions. With a 7800mAh capacity (86Wh), it offers significantly more runtime than standard 6600mAh options, reducing the need for frequent recharging.

**Important Voltage Warning**
Please verify that your original battery voltage is ** 11.1V ** before purchasing. This battery is designed for 11.1V systems only. Using an incompatible voltage (e. g., 14.8V or 10.8V ) may cause damage to your laptop or battery. If you are unsure, check the label on your current battery or contact us for assistance.

**Compatible Models**
This battery is compatible with the following Dell Precision Mobile Workstation models (please confirm your specific model number before ordering):
- Dell Precision M4600
- Dell Precision M4700
- Dell Precision M4800
- Dell Precision M6600
- Dell Precision M6700
- Dell Precision M6800

**Replacement Part Numbers**
FV993, FJJ4W, 0FV993, 0FJJ4W, and other compatible OEM equivalents.

**Specifications Table**

| Specification |

Details

|
|---------------|---------|
| Battery Type | Li-ion |
| Voltage | 11.1V |
| Capacity | 7800mAh / 86Wh |
| Cells | 6-cell |
| Color | Black |
| Weight | Approx. 350g |
| Warranty | 1 Year |

**Comparison Table**

| Feature | Our Battery (7800mAh) | Standard Battery (6600mAh) |
|---------|-----------------------|---------------------------|
| Capacity | 86Wh | 73Wh |
| Runtime (Typical Use) | Up to 5-6 hours | Up to 4-5 hours |
| Charge Cycles | ~500 cycles | ~400 cycles |
| Safety Protection | Overcharge, over-discharge, short-circuit | Basic protection |

**Installation Tips**
1. **Power Off & Unplug** Shut down your laptop and disconnect the AC adapter.
2. **Remove Old Battery** Slide the battery release latch (s) and gently lift the old battery out.
3. **Insert New Battery** Align the connectors and press the new battery into place until it clicks securely.
4. **First Charge** For optimal performance, fully charge the battery (to 100%) before first use, then allow it to discharge completely once.
5. **Calibration** If the battery indicator seems inaccurate, perform a full charge/discharge cycle to recalibrate.

**Customer Support**
If you encounter any issues with compatibility, installation, or performance, please contact us. We are committed to providing fast, friendly support and a hassle-free replacement or refund within 30 days.