Then, you'll hook up the charger's optimistic clamp into the battery's optimistic terminal plus the charger's unfavorable clamp on the battery's negative terminal. Typically, the charger's optimistic clamp is going to be red and the unfavorable clamp is going to be black. buttons: one particular to select the demand method, https://carbatterycharger.water.blog/2024/10/04/hukums-your-source-for-industrial-instruments-online/