The biggest difference is system voltage architecture
Dyness PowerBrick is a 14.336kWh low-voltage LFP battery. Sungrow SBH100 is a 10.0kWh high-voltage LFP stack built from two 5kWh modules with a documented 118.8–160.6V operating window. They should not be treated as interchangeable capacity options.
PowerBrick emphasizes low-voltage parallel expansion
Dyness states that PowerBrick can scale to 50 units in parallel, up to 716.8kWh. That can suit systems built around supported low-voltage inverters, but higher DC current makes cable, busbar and overcurrent-protection design especially important.
SBH100 is designed around Sungrow high-voltage hybrid families
The source-reviewed Sungrow SBH100 has a 140.8V nominal voltage and 50A continuous charge/discharge current. Compatibility is tied to supported Sungrow hybrid-inverter families and the exact regional system configuration.
Environmental ratings differ
The current PowerBrick technical table states IP20, while the verified SBH100 record states IP55. That difference changes siting options but does not replace the installation manual: ventilation, temperature, clearances and local electrical requirements still apply.
Choose the architecture before comparing price
Start with the inverter family, backup requirements, target power, installation environment and expansion plan. Then compare the batteries that are explicitly compatible with that design. See the PowerBrick profile and the low-voltage current guide for the associated design checks.