Special Features: Model Number:Cat S61 Capacity: 4530mAh Voltage: 4.4V Compatibility:For Caterpillar CAT S61 Packaging: 1xBattery Installation tips: 1> 1. Replacing the battery or screen may require some technical skills, you can pay some fees for technical assistance. 2.The connection points on the battery and screen are very fragile, be more careful when replacing, make sure your hands are dry when installing the battery or screen. 3. Check that the battery or screen is working well by connecting the cable before assembling your device. 4. do not throw out the packing box, keep it for at least 30 days if you have any problems, so it is more convenient for us to help you. Contact us Send us a message to Amazon if you have any questions or problems with our product. Our customer service team will answer you within 24-hours, your patience is greatly appreciated.