Tesla is introducing the Powerwall home battery which is rechargeable using electricity produced by the solar panels.

Tesla is introducing the Powerwall home battery which is rechargeable using electricity produced by the solar panels.

The wall-mounted rechargeable lithium-ion battery is 33.9 inches (86 cm) wide, 51.2 inches (130 cm) tall and has a 7.1 inch (18 cm) depth. It's compatible with single phase and three phase utility grids and weighs 220 lbs (100 kg) while both indoor and outdoor installation is possible.

It will be offered in two versions: 7 kWh (for daily cycle applications) and 10 kWh (for backup applications), with both of them having a 2.0 kW continuous power and up to 3.3 kW peak power. The battery comes with a 10-year warranty (optional extra 10 years available) and requires installation by a trained electrician while the AC-DC inverter is not included.

Tesla says multiple batteries can be installed at one home to meet increased energy needs. It can already be reserved and deliveries are scheduled to begin late summer. The 7 kWh model costs $3,000 whereas the 10 kWh version is $3,500, not including installation.

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