I salvaged a large batch of 18650 cells from old laptop batteries and needed a way to figure out which ones were still worth ...

Batteries are notoriously difficult pieces of technology to deal with reliably. They often need specific temperatures, charge rates, can’t tolerate physical shocks or damage, and can fail ...

Li-ion batteries encompass all shapes and capacities, making it difficult to create a single, integrated tester to accurately handle the range of capacities, currents, and physical form factors. We’ll ...