The Best Rechargeable Battery Charger (for AA and AAA Batteries) | Reviews by Wirecutter
Amazon.com: Tenergy NiMH Battery Pack 12V 2000mAh High Capacity Rechargeable Battery w/Bare Leads Replacement Battery Pack for DIY, Medical Equipments, LED Light Kit, RC Models, Portable 12V DC Devices and More :
Make your own RC Car Battery Pack or Repair NIKKO Ni-Cd 6.0V-620mAh - YouTube
Build a USB Powered AA NiMH and NiCd Battery Charger
Custom NiMH Battery Pack: 4.8V 15.2Ah (73Wh) rechargeable battery in special configuration
Custom NiMH Battery Pack: 12V 4500 mAh (54Wh, 2x5/S, HR-4/3FAU)
Amazon.com: Tenergy NiMH Battery Pack 12V 2000mAh High Capacity Rechargeable Battery w/Bare Leads Replacement Battery Pack for DIY, Medical Equipments, LED Light Kit, RC Models, Portable 12V DC Devices and More :
DIY battery pack with tabbed cells. Build your own pack without a spot welder! - YouTube
5x Exell 4.8V 800mAh NiMH Custom Battery Pack with Tabs for Two-Way Radio FRS - Walmart.com
Make Your Own 4 and 5 Cell NiMH Batteries : 4 Steps - Instructables