Not all installers of solar power systems are trained and accredited to install solar storage batteries. Correct installation of the battery and ensuring it is interacting properly with the solar power system is very important. It is worth ensuring that your installer is certified by the manufacturer of the battery.
The Clean Energy Council (CEC) is currently accrediting solar storage battery installers in the same way they did for solar power systems. This is part of their initiative to ensure battery safety. The sonnenBatterie shown here is being installed by a CEC accredited solar storage battery installer.
Solarpro is certified by Telsa, sonnen, LG and VARTA to install their solar storage batteries.