"Best forty bucks I've spent," Mark grinned, tucking the BX60 back into its case. The instructions were simple, but the performance was professional. He wasn't just jumped; he was .

Corroded battery terminals create resistance and prevent efficient charging. Use a wire brush or a battery terminal cleaner to remove the white/green powdery buildup from the battery posts (the + and – metal knobs).

: Often indicates "Standby" mode or that the battery is nearly full. Pro Tips for Longevity