Tesla has offered several models of the Powerwall since its introduction in April 2015. The original Powerwall (retroactively referred to as the Powerwall 1) has a 6.4 kWh capacity and is capable of delivering 3.3 kW of power. Tesla introduced an improved Powerwall 2 in October 2016 with a 13.5 kWh capacity and capable of delivering 5 kW of power continuously and up to 7 kW of peak power in short bursts (up to 10 seconds.
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