This Lithium Ion battery is designed specifically for your Samsung Galaxy S 4G/Vibrant 4G/Captivate Glide mobile phone to deliver the most reliable and long lasting power (1650mAh). It is recommended to fully drain and fully charge the battery especially during the first 3 charging and discharging cycles, doing so may greatly improve the overall life of the battery. Samsung OEM Part Numbers: EB575152LA/EB575152LAB/EB575152LABSTD. Compatible with: Samsung Captivate i897/SGH-i897 Samsung Focus i917/SGH-i917 Samsung Captivate Glide i927/SGH-i927 Samsung Vibrant T959/SGH-T959 Samsung Galaxy S 4G T959V/SGH-T959V.