| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery which eliminates the possibility of liquid leakage by impeding or avoiding the contact of external foreign matter with a rupture valve 8. SOLUTION: A recessed part 9 is formed inward at a lid body 1b of an outer case 1, and the rupture valve 8 is formed at an inner sidewall 9b of the recessed part 9. |
