Ecology The introduction and adoption of new technologies made it possible to avoid using mercury and lead, which are environmentally harmful. Excellent leakage resistance Other than eliminating the need for mercury in the compound, these batteries are manufactured to have excellent leakage resistance attained by our newly developed crimping structure. This is made possible by our new high-performance manufacturing machinery and process. High reliability Production in our high precision clean room environment thoroughly prevents contamination – resulting in the most consistent, highest reliability battery.