The Tesla Powerwall 2 has been the most popular home ... You can't do better. There's not much competition in this category. Both batteries have the same warranty, so you're not missing out ...

Start-up Orison offers a 40-pound at-home battery. That's significantly lighter than Tesla's Powerwall, but it only holds 2.2 kWh of energy. One Orison unit costs $1,600. However, unlike Tesla's ...