Toyota unveils 8.7 kWh battery for residential applications
Honestly I&#x27;d rather a battery that&#x27;s super reliable and NOT using any lithium ion inside it in my home.<p>As it doesn&#x27;t need to move, it can sit there in an unused space and be really heavy. Lead Acid Batteries are a very good fit here (traditionally used as the 12V battery in cars).<p>In Australia you can buy a 12V 42AH (amp-hour) battery for ~$150AUD or $100USD.
20 of these will give you 10kWh @ 240VDC.<p>Couple this with a 6kW solar system and you&#x27;d be almost entirely free from grid electricity, especially in summer.<p>You can individually test out the batteries and swap out bad ones. The batteries themselves typically last &gt;5years in a car and I imagine much longer at home where they aren&#x27;t exposed to high engine temps and large continuous current discharges (engine cranking on start up).