Instead, they're building ... a forum called DIY Powerwalls. In August, he showed off a 40-kilowatt-hour homemade battery storage system, assembled from 4,480 18650-sized lithium-ion cells ...

Vietnam War-era wood ammo boxes make great storage units, but they're tough to find for a decent price and in good condition. Metal ammo boxes are a popular DIY toolbox project, but not large ...

Do you have a project that needs lithium-ion batteries for energy storage? We created a solution just for you! Our 18650 battery connectors make it easy to build your own DIY lithium-ion batteries ...