Keep your Samsung i607 BlackJack smartphone running with an extra or replacement battery. This standard battery is a replacment for the battery that shipped with your BlackJack or an excellent backup battery for those times when you can't get to an outlet. 1200mAh Li-Ion Battery.
BoxWave BlackJack Battery
When you're on the go and don't have time to charge your Samsung BlackJack, bring along BoxWave's Standard Capacity Battery as spare battery! It is a rechargeable lithium ion (Li-Ion) battery that is specifically designed for your Samsung BlackJack. Now you don't have to worry about running out of power again. 900mAh.
Extended BlackJack Battery
If you don't want to carry a spare battery, a good option is the extended battery, which extends the talk and standby times of the Samsung i607 BlackJack smartphone. The extended battery is larger than the standard battery, a requires a new battery cover, which is included. 1800mAh Li-Ion Battery.