I own a small company and we have 6 RAZRs and I purchased combo packs for all of them. Every car charger stopped working in less than a year! The batteries work great in the beginning, but they all failed to hold a decent charge with less than 6 months of use. The OEM batteries lasted much, much longer ¿ even the ones that are more than a year old. If you use your bluetooth, forget about any battery life - it's amazing how fast you will go from your first battery low beep to completely dead! The one bright spot is that the home charges have worked flawlessly. My recommendation is to stick with OEM batteries and car chargers and if you want to save a few bucks, buy the generic home charger. You will be money ahead in the long run.