How long is the warranty period for Ukrainian energy storage batteries

As challenging as warranties are for battery energy storage system (BESS) owners and operators, it is possible for there to be more clarity. Look no further than how the automotive industry handles electric vehicle warranties. They are simple and flexible, typically covering time (usually eight years) and mileage (usually 100,000 miles).

To track the warranty status of diverse battery assets with varying penalty formulas, owners and operators increasingly switch from quarterly spreadsheet exercises to predictive monitoring platforms. The three most common performance warranty guarantees for BESS sites. Image: ACCURE

Inflexible and complex, the warranty model for energy storage systems has failed to keep pace with rapid market growth, the authors argue. This is an extract of a feature article that originally appeared in Vol.41 of PV Tech Power, Solar Media's quarterly journal covering the solar and storage industries.

1. End-of-Life SoH Warranty: Promises a specific SoH (typically 70–80%) by the end of the warranty period if the battery is used within the – often narrow – operating conditions laid out in the warranty contract. Exceeding these conditions, even due to issues such as sensor errors or control system malfunctions, can void the warranty. 2.

When issues surface months later, the commercial warranty may have expired, leaving the owner covering the replacement costs. Performance warranty: A performance warranty is a guarantee that the storage system will maintain specific performance standards over a longer period—often between 15-20 years.

Valentin Lorscheid and Dr. Kai-Philipp Kairies of ACCURE Battery Intelligence propose ways in which BESS warranties can be reformed as the industry matures. Inflexible and complex, the warranty model for energy storage systems has failed to keep pace with rapid market growth, the authors argue.