This information comes from www.MyRadioMall.com, they have an online tool that will check this for you, very cool. Motorola Battery Online Code Checker Tool
Look for the three or four-digit code on the back of your battery, three digits indicate that the battery was produced before 2009. The first two number stands for the year, and the last two numbers stand for the week. Our Battery warranty checker understands this and subtracts one year from the current date. If you’re using an impress battery 1.5 years are subtracted from today’s date.
– All Motorola standard batteries come with a one-year limited warranty.
– All Motorola impress batteries come with a 1.5-year limited warranty.