Two of my battery's won't charge. I know it's not a problem with the charger because one of my battery's work with it. Any one know what's going on. : r/Traxxas
Lithium-ion Batteries: A Complete Guide - GolfCarts.org
How to Fix Dead Lithium-Ion Batteries That Won't Hold a Charge Anymore « Hacks, Mods & Circuitry :: Gadget Hacks