Following are some of the key considerations for selecting the type of battery for usage during peak time and power outages:
- Depth of Discharge (DoD): % of battery capacity that can be used without permanent damage (reduced DoD means more batteries for the same capacity)
- Round Trip Efficiency: Useful capacity due to losses in charging and discharging
- Charging / discharging time
- Size: Space required for battery (function of energy density (watt-hr/Kg)
- Loss of charge if not used regularly
- Volatile gases
- Weight
- Battery Management System (BMS): electronic system to manage battery charging and other functions
- Up front cost
- Life / Warranty
- Life cycle cost
- There parameters are compared below for Lead-Acid and Li Ion (LFP) Batteries