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Toyota applies its EV tech to O-Uchi Kyuden home battery system

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The O-Uchi Kyuden System will initially only be available in Japan
Toyota
The O-Uchi Kyuden System will initially only be available in Japan
Toyota
A diagram of the O-Uchi Kyuden System
Toyota
Utilizing an accompanying iOS/Android app, users can check the system's charge level, adjust its output, or switch between different power sources
Toyota
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It was back in 2015 that Tesla unveiled its Powerwall battery energy storage system for the home. Well, Toyota has now announced its similar O-Uchi Kyuden System, which can draw power from EVs.

Incorporating technology developed for the automaker's electric vehicles, the system has a rated capacity of 8.7 kWh and a rated output of 5.5 kWh.

Installed on the outside of the home, it can be charged either from the municipal grid, a third-party set of solar panels, or the battery of the user's own EV. It's designed both for everyday use, and as an emergency power source during outages. People in particularly cold climates should be aware, however, that is has an operational ambient temperature range of -20 ºC to 45 ºC (-4 ºF to 113 ºF).

A diagram of the O-Uchi Kyuden System
Toyota

Utilizing an accompanying iOS/Android app, users can check its charge level, adjust its output, or switch between different power sources. The lithium battery pack itself measures 1,142 x 341 x 432 mm (44.9 x 13.2 x 17 in) and weighs 142 kg (313 lb). An EV adapter and a hybrid power conditioner add a combined extra 42 kg (93 lb) to the latter figure.

The O-Uchi Kyuden System will initially be available only in Japan, with sales to home builders and construction companies slated to begin in August. Pricing has yet to be announced.

Source: Toyota

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2 comments
michael_dowling
"People in particularly cold climates should be aware, however, that is has an operational ambient temperature range of -20 ºC to 45 ºC (-4 ºF to 113 ºF)." People in cold climates could set it up in a heated basement space.
Mark Keller
Is the house battery so different from an EV battery that the system needs to have two different modules to handle the power coming from each? It seems like the #2 module should be able to handle both batteries.