Can You Leave Your Batteries Connected to Your R/C Vehicle When Turned Off?

Can you leave your fully-charged batteries plugged into your radio controlled car, buggy, truck, or van? What if the R/C battery is fully drained? Are the rules different for NiCd (Nickel-Cadmium) vs. NiMh (Nickel-Metal Hydride) vs. LiFe (Lithium Iron Phosphate) vs. LiPo (Lithium Polymer)? We get charged up and drain all of our aggregated knowledge about battery storage in this episode of the RC Deep Dive podcast.