ESY Sunhome - Battery Reviews

About ESY Sunhome

Founded in 2004, China's ESY Sunhome started out manufacturing batteries for small devices, then expanded into a supplier of Battery Management Systems (BMS). In 2021, the firm launched it first home energy storage solution.

Australian Contact Info

Address: 3/52-60 Roberts Road Greenacre NSW 2190
Tel: 02 9166 7642
General Email: [email protected]
Support Email: [email protected]
Website

Company Info

ESY Sunhome has a 12,000m² facility in Shenzhen, China and boasts 800 engineers and assembly line staff. As well as China, the company has offices in Germany, Italy, and here in Australia; which it opened in 2023.

ESY Sunhome HM6 Batteries

The firm launched its HM6 series home storage system products in January 2023. In Australia, the single-phase HM6 series has been approved by the Clean Energy Council for local use.

This is an all-in-one battery with a maximum power output of 6kW. A modular system, it can be expanded from 5.12 kWh usable capacity to 30.72 kWh using 5.12kWh modules. The base model has dimensions of 600 x 305 x 778 mm and weighs 93 kilograms. A full stack (6 modules) weighs in at 343kg.

The HM6 has an operating temperature range of -25 - 60°C (derating above 45°C), so assuming it is kept out of direct sunlight it can handle sizzling Australian summer temperatures. The battery has an IP66 ingress rating.

Rated output power in backup mode (all models) is 6kW. It's not clear if the battery can be charged during a blackout with a home's solar power system.

Monitoring is via the ESY Sunhome App, which the firm says also allows for complete control over the battery's operational status. The app leverages the power of AI to provide "real-time" solutions by considering factors such as user electricity consumption, weather conditions and electricity prices.

You can compare specifications of the ESY Sunhome battery with a bunch of other home energy storage solutions available in Australia on SolarQuotes' battery comparison table.

Warranty Information

The HM6 is accompanied by a 10 year *performance* warranty. ESY Sunhome warrants the HM6 will either retain at least 70% of its original storage capacity, or achieve minimum throughput energy - which varies with the model. For example the minimum throughput energy for a 5.12 kWh system is 21.5MWh. For a 30.72kWh system, it's 129MWh.

However, note that if the battery is not connected to the internet, the performance warranty is reduced to three years and, confusingly, says the warranty will not apply to battery performance in this case.

While not addressing a *product* warranty specifically, the document does reference protections under the Australian Consumer Law. Still, the product warranty should be explicit and a timeframe given.

Had any ESY Sunhome products installed at your premises? Leave a rating/review using the button towards the top of this page.