Battery sizing, cycle life, depth of discharge, and cost calculators. Browse our free battery tools below — all calculators are instant, accurate, and require no sign-up.
Battery Cost per kWh Calculator — Calculate the true cost per kWh of battery storage by dividing total installed cost by usable capacity. Compare battery economics across brands.
Battery Cycle Life Calculator — Estimate how many years your solar battery will last based on rated cycle life and daily cycling frequency. Plan battery replacement timing and costs.
Battery Depth of Discharge Calculator — Calculate usable battery capacity based on total capacity and depth of discharge. Compare lead-acid vs lithium usable energy for solar storage.
Powerwall Equivalent Calculator — Calculate how many Tesla Powerwalls or equivalent units you need for your energy storage requirements. Enter your capacity need to find the number of units.
Solar Battery Sizing Calculator — Calculate the optimal battery capacity for a solar-plus-storage system. Size your battery bank based on nighttime usage, backup needs, and depth of discharge.