Battery

An electric battery is a device that transform chemical energy into electric energy in both directions. It serves to store electric energy by transforming electric energy into chemical energy when it is relatively easy/cheap and release (by transforming back chemical energy into electric energy) it when it is relatively expensive or more needed.

Battery are part of battery energy storage system (BESS): a combination of a battery, power inverters, battery management system (BMS) and energy management system EMS. Other components may include: thermal regulation system,fire protection, electric protection, transformers.

Chemistries

• LFP: lithium iron phosphate
• NMC: lithium Nickel Manganese Cobalt Oxide
• NCA: lithium Nickel Cobalt Aluminum Oxide
• SIB aka NIB: sodium iron battery

LFP manufacturers

• BYD
• CATL
• ElevenES,Serbian company, https://elevenes.com/
• SVOLT, SVolt Energy Technology, Chinese company
• Zeekr, brand of Geely (Chinese company)

Bankrupt companies

• Northvolt, US Chapter 11 in 2024 and bankrupcy in 2025 in Sweden.