Market guide
Start with the loads and outage
Turn appliances, hours and the next recharge opportunity into a useful battery planA battery nameplate does not describe an outage. The working plan lists what must remain on, how much energy each load uses across time, which starts are difficult and how the battery will recover before it is empty.
01
Loads
Separate power from energy
Watts describe the demand at a moment. Watt-hours describe energy across time. A heater can fit the inverter and still empty a battery quickly.
- Measure
- Use a plug-in meter or reliable equipment data over a representative cycle.
- Start
- Record compressors, pumps and other short high-power events.
02
Reserve
Design for delivered energy
Inverter loss, idle draw, temperature and operating limits reduce what reaches the appliance. Critical loads need reserve rather than a calculation that ends at zero.
- Boundary
- Do not treat advertised watt-hours as delivered watt-hours.
- Test
- Run the real priority loads together before an outage.
03
Recovery
Name the next dependable charge
Grid, generator, alternator and solar charging have different output, weather and operating limits. Solar panel nameplates rarely equal all-day delivered power.
- Sequence
- Plan which loads run while the battery charges.
- Weather
- Use a conservative local solar day rather than peak panel power.
Evidence used
First-party sources behind this guide
- 01Current portable power systemsAnker SOLIX · checked August 15, 2026Open source
- 02Current portable power stationsEcoFlow · checked August 15, 2026Open source
- 03Tested portable power stationsCNET · checked August 15, 2026Open source