| BCI Group Size | Harris Battery Type | Volts | 20HR | RC@25A | CCA 0’F | CA 32’F | Dimensions | ||
| L in.(mm) | W in.(mm) | TH in.(mm) | |||||||
| GC2 | 6V-AGM | 6 | 180 | 380 | 1100 | 1400 | 10-1/4 (260) | 7-1/16 (179) | 10-13/16 (275) |
| GC2 | EVGC6A-A | 6 | 213 | 404 | 750 | 975 | 10.2 (260) | 7.1 (180) | 10.8 (274) |
| GC8 | EVGC8A-A | 8 | 170 | 285 | — | — | 10.2 (260) | 7.1 (180) | 11.3 (287) |
| — | EV12A-A | 12 | 168 | 325 | 1100 | 1375 | 12.88 (327) | 7.1 (180) | 10.8 (274) |
| GC2H | T145 | 6 | 260 | 530 | 145 | 12 | 10-3/8 (264) | 7-1/8 (181) | 11-5/8 (295) |