International certification strengthens the safety credentials and global market readiness of SolisStorage FlexAIO residential energy storage system.
As residential energy storage markets expand worldwide, product safety, system reliability and international compliance are becoming increasingly important for homeowners, installers and distributors.
Solis is pleased to announce that the SolisStorage FlexAIO All-in-One Stackable High-Voltage Energy Storage System has received IEC 62619 and IEC 63056 IECEE CB certification from TÜV Rheinland, an internationally recognized independent testing and certification organization.
On October 23, 2026, TÜV Rheinland presented the certificates to Solis during the 2026 TÜV Rheinland Greater China Advanced Technology Conference on Renewable Energy and New Power Systems, held at Yancheng International Conference Center, China.
(Left) Ruayi Pan, Certification and Testing Section Chief, Ginlong Technologies
(Right) Bin Dong, General Manager of Power Electronics Product Services, TÜV Rheinland Greater China
TÜV Rheinland conducted testing and evaluation of SolisStorage FlexAIO against IEC 62619 and IEC 63056 standards. The IECEE CB certification demonstrates conformity with the applicable international safety standards and can facilitate national certification processes in multiple markets through the CB scheme's mutual recognition framework, subject to local requirements.
This certification milestone further strengthens the compliance foundation for SolisStorage FlexAIO as Solis continues to expand its residential energy storage business globally.
What Makes SolisStorage FlexAIO Different?
SolisStorage FlexAIO is an all-in-one stackable high-voltage energy storage system designed for residential applications. It combines flexible capacity expansion, hardware protection and intelligent energy management to address diverse household energy needs.
Key Product Advantages
●Uses A+ grade cells, ≥10,000+ cycle life.
●Five-layer hardware redundancy protection as standard.
●Supports 200% PV oversizing, maximizing solar energy utilization.
●Supports 150% overload for 10 seconds in off-grid mode.
●Supports seamless on-grid and off-grid switching with transfer times <10ms.
●Designed for all environments: IP66 protection & C5-M anti-corrosion.
●Intelligent thermal management with standard battery heating and active cooling, operable from -20°C to 55°C.
●Supports mixing of 6kWh and 9kWh battery packs, as well as old and new batteries.
●Each cluster supports up to 6 stacked modules, with up to 6 clusters in parallel, expandable to a maximum of 324kWh.
●Independent module management with intelligent per-cluster optimisation.
●The system continues to operate safely even if a single battery pack fails.
●Dedicated VPP communication channel, plug-and-play direct connection to third-party EMS/VPPs with an open protocol.
●Solis AI – smart energy management with generator support.
●Integrated stackable design for quick and easy installation within 5 minutes.
●Supports OTA remote upgrades for efficient operation and maintenance.
Advancing Safe and Intelligent Residential Energy Storage
Receiving TÜV Rheinland IEC 62619 and IEC 63056 IECEE CB certification marks an important milestone for SolisStorage FlexAIO, demonstrating Solis' continued focus on product safety, technical innovation and international market requirements.
By combining internationally recognized certification with flexible system configurations and intelligent energy management, SolisStorage FlexAIO is designed to help households make better use of solar energy and meet diverse needs, including self-consumption and backup power.
Solis will continue to strengthen its energy storage portfolio and deliver reliable, adaptable solutions for customers worldwide.
