This enviromentally friendly 750 mAh lithium Ion battery offers up to 90 - 225 minutes of talk time or up to 69-343 hours of standby time in digital mode. Lithium Ion phone battery outperforms the equivalent NiMH cell battery, for 30% less weight! Actual talk and standby time vary depending on personal usage and system transition of your service provider. To reach maximum capacity and ensure longetivity of your new battery, you need to charge-discharge it for 3 complete cycles. Ideally, each charge cycle should be more than 10 hours. Phone dimensions and weight with battery attached: 3.6 x 1.9 x 1 Inches Weight; 4 Ounces Compatibility: Motorola T720, T720i, T721, T722i, T730, T731 series, C331t, C332t, C333c and C353t (TDMA) phones.