Batteries
Choose a guide, check the worked example and continue to a calculator or equipment category.
How to size a backup battery
Battery capacity starts with an energy budget. A large Ah number is not enough to tell you what will run, for how long, or whether the battery can start the load.
LiFePO4 versus lead-acid
Compare the energy you can repeatedly use, charging constraints and system changes—not just two Ah labels.
12 V, 24 V or 48 V?
System voltage changes current, cabling and compatibility. Choose it before buying the inverter and battery bank.
Calculate battery runtime
Runtime is an estimate based on usable energy and real load. Explain the assumptions before treating the result as a purchasing requirement.
How to choose a DC-DC charger
A practical planning guide: define the job, work through the energy and compatibility constraints, then prepare a supplier brief.