ITEM NAME:5Pcs Li-ion DIY Battery Plastic Case Holder for 4x3.7V 18650 Battery F9M5 5Pcs Li-ion DIY Battery Plastic Case Holder for 4x3.7V 18650 Battery F9M5 B6O4 This DIY battery box holder with 8 Pins Contact, fit for 4 x 3.7V 18650 batteries. Battery is not included here. Product Name : Battery Case fit Battery Type : for 4 x 3.7V 18650 Battery in parallel(Non included) Body Size : 80x 78 x 21mm/ 3.1" x 3.1" x 0.8"(L*W*H) Materials : Plastic, Metal Color : Black Net Weight : 136g Package Content : 5 X Battery Case Holder for 4x3.7V 18650 Battery Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm.