Buying Guide

Home Battery Warranty: What the Fine Print Really Means

Throughput limits, install requirements, and pro-rated coverage: how to read a 10-year battery warranty.

Sarah Chen · May 16, 2025·9 min read

A 10-year warranty isn't unconditional. Manufacturers cap cycle throughput and exclude improper install, read the exhibit pages.

Throughput vs years

Many warranties expire when either 10 years OR 4 MWh throughput per kWh is reached, whichever comes first. Heavy cyclists may hit throughput first.

Install requirements

DIY installs may void coverage on fixed home units. Keep permit records and commissioning reports for claims.

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