Industry-leading, Complete-system Warranty, more lifetime free service trust by installer
|✔||Complete system||Battery Performance & Capacity only|
|✔||Removal of defective part||✖|
|✔||Installation of new part||✖|
|10 years||Product warranty term||5-7 years|
The only solar warranty to cover your complete system for 10 years—including performance and parts. We have absolute confidence in our battery system's
ability to store,deliver more energy, reliability and savings over time.
Over five years service records from our partner in Pforzheim Germany
Not only service but free upgrading for all our customers.
Service including detailed surveys are the ground root to our continuous improvement
Unrivaled Active Battery/Cell Equalization Performance
The Cosun Residential battery storage system features the most efficient 2A DC-DC Active balancing technology on the market.
Because better balance means more power, much longer cycling life and more savings,forget all the cheap passive balance now.
Free Remote Maintenance - Cosun Unique Battery Cloud