Types of BB Batteries

From BlackBerryFAQ

Handy Reference Chart:

OEM batteries by series

71XX - Dark blue (C-S2) - 1000mAh

81XX - Gold/yellow (C-M2) - 1400mAh

83XX - Dark blue (C-S2) - 1000mAh

87XX - Dark Blue (C-S2) - 1000mAh

88XX - Green (lime) (C-X2) - 900mAh