Do not match batteries by kWh alone
A 10kWh battery can still be electrically incompatible with a 10kW hybrid inverter. The first compatibility layer is the battery-voltage window. Compare the battery stack’s minimum and maximum operating voltage with the inverter’s published battery-input range, not just nominal voltage.
Stack size changes voltage
Many high-voltage batteries connect modules in series. Adding modules raises both energy and stack voltage, which means a small stack and a large stack from the same family may not fit the same inverter. Use the exact module count you plan to install when checking the range.
Current limits determine power
Voltage compatibility is necessary but not sufficient. Compare the battery’s continuous charge/discharge current with the inverter’s battery-port current and power limits. A compatible voltage window does not guarantee the inverter can deliver the battery’s advertised peak power.
Manufacturer approval still wins
If the inverter or battery manufacturer publishes an approved compatibility list, treat that as stronger evidence than an arithmetic voltage match. Firmware, communications protocol, BMS behaviour and country-specific certification can make an electrically plausible pairing unsupported.
Backup mode may use different limits
Some systems have separate continuous and short-duration backup limits. Check whether the intended essential loads, whole-home transfer hardware and phase arrangement fit those limits. Our home battery backup readiness checklist covers the outage side of the design.
Keep the evidence with the quote
Save the exact manufacturer datasheet, compatibility list and checked date used for the design. If a firmware update or new battery generation changes the approved list later, the installer and customer can still see what evidence supported the original configuration. Browse the equipment catalogue for source-backed product records and the Parts & compatibility section for component-level evidence.