This is a new Dell C5443 battery for the Latitude D810 and Precision M70 models. This C5443 battery is rated 5200 mAh and will typically last 2.5 hours on a full charge. This battery will still be compatible if your existing battery is rated at 4400 or 4800 mAh or a lower Whr.
We are a US based business with knowledgeable support staff to assist you before and after the sale. Yes, we have a phone number and real people answer your call! Free technical support is available if you need additional help in diagnosing power problems with your battery, ac power adapter or battery meter software.
All our products carry a full 2 Year warranty and every battery is charged and tested before it ships. We provide a 30 day money back guarantee if you are not completely satisfied.