For automotive needs, reliability and "cold cranking amps" (CCA) are critical.
: If you are looking for cells (like 18650s) for DIY projects, eBay often lists bulk lots of 50+ laptop batteries for scrap recovery. 3. Used Solar and Deep Cycle Batteries where can i buy a used battery
Buying a used battery can save you between compared to new units, but the "where" depends heavily on whether you need it for a car, laptop, or solar project. 1. Used Car and Vehicle Batteries For automotive needs, reliability and "cold cranking amps"
: Sites like Repowered focus on giving electronics a "second life" through certified refurbishment. For automotive needs