Tesla Backup Power

The reference point every other home battery is measured against. Price shown is typical installed cost ($13,000-16,500 in 2026, roughly $9,300-11,500 hardware). One unit delivers 11.5kW continuous with a 185A locked-rotor start rating - enough to run and start central air - plus an integrated 6-MPPT solar inverter that eliminates a separate inverter purchase. LFP chemistry, 97.5% efficiency, 10-year warranty. Owner sentiment: the app is universally called the best in the industry, and per-kWh installed cost is hard to beat. The complaints are real though: a subset of owners report a persistent two-tone hum/vibration from the cooling system audible through garage walls, support tickets that stall between Tesla and third-party installers, and quote quality varies enormously by installer. Expansion packs (13.5kWh, no inverter) bring a unit to 54kWh.