EVO 25 FP2500mAh up to 62A/125A burst FP2500 2S (7.4V) Rating: 25/50C Norm/Max Discharge Output: 7.4V Nominal, 2500mAh Dimensions/wt: 5 1/8" x 1 1/2" x 1/2", 4.9 oz. 130mm x 39mm x 14mm, 140g FP2500 3S (11.1V) Rating: 25/50C Norm/Max Discharge Output: 11.1V Nominal, 2500mAh Dimensions/wt: 5 1/8" x 1 1/2" x 3/4", 7.36 oz. 130mm x 39mm x 20mm, 210g FP2500 4S (14.8.V) Rating: 25/50C Norm/Max Discharge Output: 14.8V Nominal, 2500mAh Dimensions/wt: 5 1/8" x 1 1/2" x 1", 9.5 oz. 130mm x 39mm x 28mm, 270g FP2500 5S (18.5V) Rating: 25/50C Norm/Max Discharge Output: 18.5V Nominal, 2500mAh Dimensions/wt: 5 1/8" x 1 1/2" x 1 1/4", 11.9 oz. 130mm x 39mm x 34mm, 340g FP2500 6S (22.2V) Rating: 25/50C Norm/Max Discharge Output: 22.2V Nominal, 2500mAh Dimensions/wt: 5 1/8" x 1 1/2" x 1 1/2", 14.5 oz. 130mm x 39mm x 40mm, 410g