DIY Battery Building Kit & Hardware for Sub-C Size NiMH for R/C or RC - Team Integy
DIY Li-ion battery building kit | Make your own 18650 packs by Micah Toll — Kickstarter
Battery Building Instructions – DIY Batteries
Amazon.com: XBERSTAR 18650 Power Bank case,Li-Ion Battery Storage Box -18650 Holder for Uninterrupted Power Supply UPS DIY Battery Special Plastic DIY kit (set1) : Electronics
TUTORIAL: How to Create Your Own DIY Battery Pack! (On the Cheap! - Misc - Lithium Ion) - YouTube