The advantage of lead-acid batteries is their long service life and low initial costs. Closed and sealed (vented/valve-regulated) battery types are used depending on the requirements and application. Lead-acid batteries are available in the power range from 7 to 3500 Ah.

1. High reliability
2. High availability
3. Low maintenance or maintenance-free
4. Long service life up to 20 years depending on design
5. Different types available for optimum efficiency depending on application
6. High degree of flexibility – adaptation of battery type to customer requirements