Which battery chemistries are mentioned for stationary ESS?

• A. Lithium-ion, Lithium Metal Polymer, Flow batteries, Nickel Cadmium, Nickel Metal Hydride, and Lead Acid batteries.
• B. Alkaline and Zinc-air only.
• C. Sodium-ion and lithium-sulfur.
• D. Vanadium redox and solid-state lithium.

Answer: (A)

The idea being tested is that stationary energy storage systems can use a wide range of battery chemistries. Training materials for stationary ESS commonly reference several chemistries you might encounter in real installations, covering both traditional and modern technologies. The best answer includes six types: lithium-ion (including Lithium Metal Polymer), flow batteries, nickel-cadmium, nickel-metal hydride, and lead-acid. This broad list reflects what’s typically discussed for stationary storage, spanning established options like lead-acid and NiCd/NiMH, as well as more modern families like lithium-ion and Li-metal polymers, plus flow batteries that are favored for longer-duration storage. The other choices are too limited or omit widely used chemistries, which is why they don’t fit as well.