TP1800mAh Pro Power up to 54A/108A burst TP1800 2S (7.4V) Rating: 30/60C Norm/Max Discharge Output: 7.4V Nominal, 1800mAh Dimensions/wt: 3 3/4" x 1 1/4" x 5/8", 3.7 oz. 95mm x 30mm x 15mm, 105g TP1800 3S (11.1V) Rating: 30/60C Norm/Max Discharge Output: 11.1V Nominal, 1800mAh Dimensions/wt: 3 3/4" x 1 1/4" x 1", 5.3 oz. 95mm x 30mm x 24mm, 150g TP1800 4S (14.8V) Rating: 30/60C Norm/Max Discharge Output: 14.8V Nominal, 1800mAh Dimensions/wt: 3 3/4" x 1 1/4" x 1 1/4", 7 oz. 95mm x 30mm x 32mm, 200g