MyDiyAddiction DIY Build a Simple Alkaline Battery Charger for $20
This time I show you how $20 builds a simple battery charger that can recharge just about any battery you have, including Alkaline, Ni-Cd, Ni-MH, and Li-ion cells — correctly and effectively. No expensive parts, this is a budget-friendly, beginner-safe build using easy-to-find components. Perfect for DIYers, preppers, tinkerers, and anyone tired of throwing away …