1. Lead-Acid batteries are cost-effective, both procurement and life cycle cost, but they are heavy and bulky 2. Equalization is a necessity 3. Sulfation can be controlled by periodic conditioning 4. Grid corrosion can be delayed by power and thermal management 5. Demonstrated (in service) pack life is two or more years 6. The supply base is mature and reliable 7. New technology can be retrofitted when commercially viable and cost effective.
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