Difference Between Common Battery Sizes |

BCI Size & Model |
L in / mm BCI difference |
W in / mm BCI difference |
H in / mm BCI difference |

BCI Group 1 | 9.13 inches / 232mm Optima 35 is larger by 1.18 inches | 7.13 inches / 181mm Optima 35 is smaller by 0.32 inches | 9.38 inches / 238mm Optima 35 is smaller by 1.75 inches |

BCI Group 17HF | 7.38 inches / 187mm Optima 35 is larger by 2.93 inches | 6.88 inches / 175mm Optima 35 is smaller by 0.07 inches | 9.00 inches / 229mm Optima 35 is smaller by 1.37 inches |

BCI Group 2 | 10.38 inches / 264mm Optima 35 is smaller by 0.07 inches | 7.13 inches / 181mm Optima 35 is smaller by 0.32 inches | 9.38 inches / 238mm Optima 35 is smaller by 1.75 inches |

BCI Group 21 | 8.19 inches / 208mm Optima 35 is larger by 2.12 inches | 6.81 inches / 173mm Optima 35 is larger by -0 inches | 8.75 inches / 222mm Optima 35 is smaller by 1.12 inches |

BCI Group 22F | 9.50 inches / 241mm Optima 35 is larger by 0.81 inches | 6.88 inches / 175mm Optima 35 is smaller by 0.07 inches | 8.31 inches / 211mm Optima 35 is smaller by 0.68 inches |

BCI Group 22HF | 9.50 inches / 241mm Optima 35 is larger by 0.81 inches | 6.88 inches / 175mm Optima 35 is smaller by 0.07 inches | 9.00 inches / 229mm Optima 35 is smaller by 1.37 inches |

BCI Group 22NF | 9.44 inches / 240mm Optima 35 is larger by 0.87 inches | 5.50 inches / 140mm Optima 35 is larger by 1.31 inches | 8.94 inches / 227mm Optima 35 is smaller by 1.31 inches |

BCI Group 22R | 9.00 inches / 229mm Optima 35 is larger by 1.31 inches | 6.88 inches / 175mm Optima 35 is smaller by 0.07 inches | 8.31 inches / 211mm Optima 35 is smaller by 0.68 inches |

BCI Group 24 | 10.25 inches / 260mm Optima 35 is larger by 0.06 inches | 6.81 inches / 173mm Optima 35 is larger by -0 inches | 8.88 inches / 225mm Optima 35 is smaller by 1.25 inches |

BCI Group 24F | 10.75 inches / 273mm Optima 35 is smaller by 0.44 inches | 6.81 inches / 173mm Optima 35 is larger by -0 inches | 9.00 inches / 229mm Optima 35 is smaller by 1.37 inches |

BCI Group 24H | 10.25 inches / 260mm Optima 35 is larger by 0.06 inches | 6.81 inches / 173mm Optima 35 is larger by -0 inches | 9.38 inches / 238mm Optima 35 is smaller by 1.75 inches |

BCI Group 24R | 10.25 inches / 260mm Optima 35 is larger by 0.06 inches | 6.81 inches / 173mm Optima 35 is larger by -0 inches | 9.00 inches / 229mm Optima 35 is smaller by 1.37 inches |

BCI Group 24T | 10.25 inches / 260mm Optima 35 is larger by 0.06 inches | 6.81 inches / 173mm Optima 35 is larger by -0 inches | 9.75 inches / 248mm Optima 35 is smaller by 2.12 inches |

BCI Group 25 | 9.06 inches / 230mm Optima 35 is larger by 1.25 inches | 6.88 inches / 175mm Optima 35 is smaller by 0.07 inches | 8.88 inches / 225mm Optima 35 is smaller by 1.25 inches |

BCI Group 26 | 8.19 inches / 208mm Optima 35 is larger by 2.12 inches | 6.81 inches / 173mm Optima 35 is larger by -0 inches | 7.75 inches / 197mm Optima 35 is smaller by 0.12 inches |

BCI Group 26R | 8.19 inches / 208mm Optima 35 is larger by 2.12 inches | 6.81 inches / 173mm Optima 35 is larger by -0 inches | 7.75 inches / 197mm Optima 35 is smaller by 0.12 inches |

BCI Group 27 | 12.06 inches / 306mm Optima 35 is smaller by 1.75 inches | 6.81 inches / 173mm Optima 35 is larger by -0 inches | 8.88 inches / 225mm Optima 35 is smaller by 1.25 inches |

BCI Group 27F | 12.50 inches / 318mm Optima 35 is smaller by 2.19 inches | 6.81 inches / 173mm Optima 35 is larger by -0 inches | 8.94 inches / 227mm Optima 35 is smaller by 1.31 inches |

BCI Group 27H | 11.75 inches / 298mm Optima 35 is smaller by 1.44 inches | 6.81 inches / 173mm Optima 35 is larger by -0 inches | 9.25 inches / 235mm Optima 35 is smaller by 1.62 inches |

BCI Group 28 | 10.31 inches / 261mm Optima 35 is larger by -0 inches | 6.81 inches / 173mm Optima 35 is larger by -0 inches | 9.44 inches / 240mm Optima 35 is smaller by 1.81 inches |

BCI Group 29H | 13.13 inches / 334mm Optima 35 is smaller by 2.82 inches | 6.75 inches / 171mm Optima 35 is larger by 0.06 inches | 9.00 inches / 232mm Optima 35 is smaller by 1.37 inches |

BCI Group 29NF | 13.00 inches / 330mm Optima 35 is smaller by 2.69 inches | 5.50 inches / 140mm Optima 35 is larger by 1.31 inches | 8.94 inches / 227mm Optima 35 is smaller by 1.31 inches |

BCI Group 2N | 10.00 inches / 254mm Optima 35 is larger by 0.31 inches | 5.56 inches / 141mm Optima 35 is larger by 1.25 inches | 8.94 inches / 227mm Optima 35 is smaller by 1.31 inches |

BCI Group 30H | 13.50 inches / 343mm Optima 35 is smaller by 3.19 inches | 6.81 inches / 173mm Optima 35 is larger by -0 inches | 9.00 inches / 235mm Optima 35 is smaller by 1.37 inches |

BCI Group 31 | 13.00 inches / 330mm Optima 35 is smaller by 2.69 inches | 6.72 inches / 173mm Optima 35 is larger by 0.09 inches | 9.44 inches / 240mm Optima 35 is smaller by 1.81 inches |

BCI Group 33 | 13.31 inches / 338mm Optima 35 is smaller by 3 inches | 6.81 inches / 173mm Optima 35 is larger by -0 inches | 9.38 inches / 238mm Optima 35 is smaller by 1.75 inches |

BCI Group 34 | 10.25 inches / 260mm Optima 35 is larger by 0.06 inches | 6.81 inches / 173mm Optima 35 is larger by -0 inches | 7.88 inches / 200mm Optima 35 is smaller by 0.25 inches |

BCI Group 34R | 10.25 inches / 260mm Optima 35 is larger by 0.06 inches | 6.81 inches / 173mm Optima 35 is larger by -0 inches | 7.88 inches / 200mm Optima 35 is smaller by 0.25 inches |

BCI Group 35 | 9.06 inches / 230mm Optima 35 is larger by 1.25 inches | 6.88 inches / 175mm Optima 35 is smaller by 0.07 inches | 8.88 inches / 225mm Optima 35 is smaller by 1.25 inches |

BCI Group 36R | 10.38 inches / 263mm Optima 35 is smaller by 0.07 inches | 7.25 inches / 183mm Optima 35 is smaller by 0.44 inches | 8.13 inches / 206mm Optima 35 is smaller by 0.5 inches |

BCI Group 40R | 10.94 inches / 277mm Optima 35 is smaller by 0.63 inches | 6.88 inches / 175mm Optima 35 is smaller by 0.07 inches | 6.88 inches / 175mm Optima 35 is larger by 0.75 inches |

BCI Group 41 | 11.19 inches / 293mm Optima 35 is smaller by 0.88 inches | 6.88 inches / 175mm Optima 35 is smaller by 0.07 inches | 6.88 inches / 175mm Optima 35 is larger by 0.75 inches |

BCI Group 42 | 9.31 inches / 243mm Optima 35 is larger by 1 inches | 6.81 inches / 173mm Optima 35 is larger by -0 inches | 6.81 inches / 173mm Optima 35 is larger by 0.82 inches |

BCI Group 43 | 13.13 inches / 334mm Optima 35 is smaller by 2.82 inches | 6.88 inches / 175mm Optima 35 is smaller by 0.07 inches | 8.06 inches / 205mm Optima 35 is smaller by 0.43 inches |

BCI Group 45 | 9.44 inches / 240mm Optima 35 is larger by 0.87 inches | 5.50 inches / 140mm Optima 35 is larger by 1.31 inches | 8.94 inches / 227mm Optima 35 is smaller by 1.31 inches |

BCI Group 46 | 10.75 inches / 273mm Optima 35 is smaller by 0.44 inches | 6.81 inches / 173mm Optima 35 is larger by -0 inches | 9.00 inches / 229mm Optima 35 is smaller by 1.37 inches |

BCI Group 47 | 9.69 inches / 246mm Optima 35 is larger by 0.62 inches | 6.88 inches / 175mm Optima 35 is smaller by 0.07 inches | 7.50 inches / 190mm Optima 35 is larger by 0.13 inches |

BCI Group 48 | 12.06 inches / 306mm Optima 35 is smaller by 1.75 inches | 6.88 inches / 175mm Optima 35 is smaller by 0.07 inches | 7.56 inches / 192mm Optima 35 is larger by 0.07 inches |

BCI Group 49 | 15.00 inches / 381mm Optima 35 is smaller by 4.69 inches | 6.88 inches / 175mm Optima 35 is smaller by 0.07 inches | 7.19 inches / 192mm Optima 35 is larger by 0.44 inches |

BCI Group 50 | 13.50 inches / 343mm Optima 35 is smaller by 3.19 inches | 5.00 inches / 127mm Optima 35 is larger by 1.81 inches | 10.00 inches / 254mm Optima 35 is smaller by 2.37 inches |

BCI Group 51 | 9.38 inches / 238mm Optima 35 is larger by 0.93 inches | 5.06 inches / 129mm Optima 35 is larger by 1.75 inches | 8.81 inches / 223mm Optima 35 is smaller by 1.18 inches |

BCI Group 51R | 9.38 inches / 238mm Optima 35 is larger by 0.93 inches | 5.06 inches / 129mm Optima 35 is larger by 1.75 inches | 8.81 inches / 223mm Optima 35 is smaller by 1.18 inches |

BCI Group 52 | 7.31 inches / 186mm Optima 35 is larger by 3 inches | 5.81 inches / 147mm Optima 35 is larger by 1 inches | 8.25 inches / 210mm Optima 35 is smaller by 0.62 inches |

BCI Group 53 | 13.00 inches / 330mm Optima 35 is smaller by 2.69 inches | 4.69 inches / 119mm Optima 35 is larger by 2.12 inches | 8.25 inches / 210mm Optima 35 is smaller by 0.62 inches |

BCI Group 54 | 7.31 inches / 186mm Optima 35 is larger by 3 inches | 6.06 inches / 154mm Optima 35 is larger by 0.75 inches | 8.38 inches / 212mm Optima 35 is smaller by 0.75 inches |

BCI Group 55 | 8.63 inches / 218mm Optima 35 is larger by 1.68 inches | 6.06 inches / 154mm Optima 35 is larger by 0.75 inches | 8.38 inches / 212mm Optima 35 is smaller by 0.75 inches |

BCI Group 56 | 10.00 inches / 254mm Optima 35 is larger by 0.31 inches | 6.06 inches / 154mm Optima 35 is larger by 0.75 inches | 8.38 inches / 212mm Optima 35 is smaller by 0.75 inches |

BCI Group 57 | 8.06 inches / 205mm Optima 35 is larger by 2.25 inches | 7.19 inches / 183mm Optima 35 is smaller by 0.38 inches | 6.94 inches / 177mm Optima 35 is larger by 0.69 inches |

BCI Group 58 | 10.06 inches / 255mm Optima 35 is larger by 0.25 inches | 7.19 inches / 183mm Optima 35 is smaller by 0.38 inches | 6.94 inches / 177mm Optima 35 is larger by 0.69 inches |

BCI Group 58R | 10.06 inches / 255mm Optima 35 is larger by 0.25 inches | 7.19 inches / 183mm Optima 35 is smaller by 0.38 inches | 6.94 inches / 177mm Optima 35 is larger by 0.69 inches |

BCI Group 59 | 10.06 inches / 255mm Optima 35 is larger by 0.25 inches | 7.63 inches / 193mm Optima 35 is smaller by 0.82 inches | 7.75 inches / 196mm Optima 35 is smaller by 0.12 inches |

BCI Group 60 | 13.06 inches / 332mm Optima 35 is smaller by 2.75 inches | 6.31 inches / 160mm Optima 35 is larger by 0.5 inches | 8.88 inches / 225mm Optima 35 is smaller by 1.25 inches |

BCI Group 61 | 7.56 inches / 192mm Optima 35 is larger by 2.75 inches | 6.38 inches / 162mm Optima 35 is larger by 0.43 inches | 8.88 inches / 225mm Optima 35 is smaller by 1.25 inches |

BCI Group 62 | 8.88 inches / 225mm Optima 35 is larger by 1.43 inches | 6.38 inches / 162mm Optima 35 is larger by 0.43 inches | 8.88 inches / 225mm Optima 35 is smaller by 1.25 inches |

BCI Group 63 | 10.19 inches / 258mm Optima 35 is larger by 0.12 inches | 6.38 inches / 162mm Optima 35 is larger by 0.43 inches | 8.88 inches / 225mm Optima 35 is smaller by 1.25 inches |

BCI Group 64 | 11.69 inches / 296mm Optima 35 is smaller by 1.38 inches | 6.38 inches / 162mm Optima 35 is larger by 0.43 inches | 8.88 inches / 225mm Optima 35 is smaller by 1.25 inches |

BCI Group 65 | 12.06 inches / 306mm Optima 35 is smaller by 1.75 inches | 7.50 inches / 190mm Optima 35 is smaller by 0.69 inches | 7.56 inches / 192mm Optima 35 is larger by 0.07 inches |

BCI Group 70 | 8.19 inches / 208mm Optima 35 is larger by 2.12 inches | 7.06 inches / 179mm Optima 35 is smaller by 0.25 inches | 7.69 inches / 196mm Optima 35 is smaller by 0.06 inches |

BCI Group 71 | 8.19 inches / 208mm Optima 35 is larger by 2.12 inches | 7.06 inches / 179mm Optima 35 is smaller by 0.25 inches | 8.50 inches / 216mm Optima 35 is smaller by 0.87 inches |

BCI Group 72 | 9.06 inches / 230mm Optima 35 is larger by 1.25 inches | 7.06 inches / 179mm Optima 35 is smaller by 0.25 inches | 8.25 inches / 210mm Optima 35 is smaller by 0.62 inches |

BCI Group 73 | 9.06 inches / 230mm Optima 35 is larger by 1.25 inches | 7.06 inches / 179mm Optima 35 is smaller by 0.25 inches | 8.50 inches / 216mm Optima 35 is smaller by 0.87 inches |

BCI Group 74 | 10.25 inches / 260mm Optima 35 is larger by 0.06 inches | 7.25 inches / 184mm Optima 35 is smaller by 0.44 inches | 8.75 inches / 222mm Optima 35 is smaller by 1.12 inches |

BCI Group 75 | 9.06 inches / 230mm Optima 35 is larger by 1.25 inches | 7.06 inches / 179mm Optima 35 is smaller by 0.25 inches | 7.69 inches / 196mm Optima 35 is smaller by 0.06 inches |

BCI Group 76 | 13.13 inches / 334mm Optima 35 is smaller by 2.82 inches | 7.06 inches / 179mm Optima 35 is smaller by 0.25 inches | 8.50 inches / 216mm Optima 35 is smaller by 0.87 inches |

BCI Group 78 | 10.25 inches / 260mm Optima 35 is larger by 0.06 inches | 7.06 inches / 179mm Optima 35 is smaller by 0.25 inches | 7.69 inches / 196mm Optima 35 is smaller by 0.06 inches |

BCI Group 85 | 9.06 inches / 230mm Optima 35 is larger by 1.25 inches | 6.81 inches / 173mm Optima 35 is larger by -0 inches | 8.00 inches / 203mm Optima 35 is smaller by 0.37 inches |

BCI Group 86 | 9.06 inches / 230mm Optima 35 is larger by 1.25 inches | 6.81 inches / 173mm Optima 35 is larger by -0 inches | 8.00 inches / 203mm Optima 35 is smaller by 0.37 inches |

BCI Group 90 | 9.69 inches / 246mm Optima 35 is larger by 0.62 inches | 6.88 inches / 175mm Optima 35 is smaller by 0.07 inches | 6.88 inches / 175mm Optima 35 is larger by 0.75 inches |

BCI Group 91 | 11.00 inches / 280mm Optima 35 is smaller by 0.69 inches | 6.88 inches / 175mm Optima 35 is smaller by 0.07 inches | 6.88 inches / 175mm Optima 35 is larger by 0.75 inches |

BCI Group 92 | 12.50 inches / 317mm Optima 35 is smaller by 2.19 inches | 6.88 inches / 175mm Optima 35 is smaller by 0.07 inches | 6.88 inches / 175mm Optima 35 is larger by 0.75 inches |

BCI Group 93 | 15.00 inches / 354mm Optima 35 is smaller by 4.69 inches | 6.88 inches / 175mm Optima 35 is smaller by 0.07 inches | 6.88 inches / 175mm Optima 35 is larger by 0.75 inches |

BCI Group 95R | 15.56 inches / 394mm Optima 35 is smaller by 5.25 inches | 6.88 inches / 175mm Optima 35 is smaller by 0.07 inches | 7.50 inches / 190mm Optima 35 is larger by 0.13 inches |

BCI Group 96R | 9.56 inches / 242mm Optima 35 is larger by 0.75 inches | 6.81 inches / 173mm Optima 35 is larger by -0 inches | 6.88 inches / 175mm Optima 35 is larger by 0.75 inches |

BCI Group 97R | 9.94 inches / 252mm Optima 35 is larger by 0.37 inches | 6.88 inches / 175mm Optima 35 is smaller by 0.07 inches | 7.50 inches / 190mm Optima 35 is larger by 0.13 inches |

BCI Group 98R | 11.19 inches / 283mm Optima 35 is smaller by 0.88 inches | 6.88 inches / 175mm Optima 35 is smaller by 0.07 inches | 7.50 inches / 190mm Optima 35 is larger by 0.13 inches |

BCI Group GC2 | 10.38 inches / 264mm Optima 35 is smaller by 0.07 inches | 7.19 inches / 183mm Optima 35 is smaller by 0.38 inches | 10.63 inches / 270mm Optima 35 is smaller by 3 inches |

BCI Group GC2H | 10.38 inches / 264mm Optima 35 is smaller by 0.07 inches | 7.19 inches / 183mm Optima 35 is smaller by 0.38 inches | 11.63 inches / 295mm Optima 35 is smaller by 4 inches |