BrightGridHome batteries are designed for repeated charging and discharging, but their usable capacity gradually changes over time. Understanding warranty terms and degradation assumptions is important when comparing systems.
What is battery degradation?
Battery degradation describes the gradual reduction in the amount of energy a battery can store and deliver compared with when it was new.
What affects battery life?
- Number of cycles
- Depth of discharge
- Operating temperature
- Charging strategy
- Discharging strategy
- Battery chemistry
- System controls
What does a battery warranty cover?
Battery warranties can specify a period, minimum retained capacity, energy throughput or other operating conditions. The exact terms should be reviewed before purchase.
Why usable capacity matters
Headline capacity and usable capacity are not always identical. Comparing usable capacity provides a more meaningful indication of how much energy the household can actually access.
Read the warranty conditions
Do not compare battery warranties only by the number of years. Review retained capacity, throughput limits and operating conditions.
Compare battery systems
Explore battery options using usable capacity, warranty and operating requirements rather than headline capacity alone.
Explore BatteriesFrequently asked questions
How long does a solar battery last?
Battery service life varies by technology, operating conditions, cycling and manufacturer warranty.
Do solar batteries lose capacity?
Yes. Battery capacity generally declines gradually with use and age.
What does a battery warranty cover?
It can cover operating years, retained capacity, throughput and other specified conditions.
How can I extend battery life?
Following manufacturer operating guidance and avoiding unsuitable temperatures and operating conditions can help protect long-term performance.
Andrew Sinclair
Battery Systems Specialist at BrightGrid Energy
