8/29/25

How Does a Home Battery Work? Night Use, Blackouts, Lifespan & Warranty - in San Diego

How does a home battery actually work? Bailey Maxwell of Loft™ explains what a battery does day to day: it stores solar energy for after the sun goes down, powers your home through the evening and night, and — during an outage — works with your solar panels in a daily cycle. Solar can run the home and recharge the battery by day, then the battery carries the home at night. Bailey also covers the ownership side homeowners ask about: how long a battery can realistically run your house, why A/C and EV charging drain it faster, why sizing matters, what happens if something breaks, who your first call is for repairs, how the 10-year Tesla warranty works, and how battery capacity fades over time — roughly 60–70% of original capacity after about 15 years, and about half after 20 years. Loft™ Home Energy Co. is an independent home energy planning and advisory firm in San Diego — not an installer. We help solar homeowners keep, store, and control the power their homes generate with a custom plan based on their actual usage data. Start with the free battery calculator — no name, email, or phone required: https://www.lofthomeenergy.com Or book a free, no-pressure Custom Battery Plan appointment and talk to someone who’ll tell you straight.

Previous

Home Battery Cost + Incentives in San Diego (Full Breakdown)

Next

Why Loft™ Home Energy Is Different