Keep your 18650 lithium-ion batteries organized and secure with this rugged, stackable battery holder designed for serious DIYers and electronics enthusiasts. Built to Gridfinity specs, this modular unit offers high-density storage in a compact footprint. Each container holds 25 cells snugly, with reinforced walls for added strength and easy stacking. Perfect for workbenches, battery rebuilds, or portable energy projects.

Designed with durability in mind, this print minimizes filament waste while maximizing structure—ideal for anyone building powerwalls, solar storage, or just managing a growing cell collection.