The DC-UPS powers your tools from the auto using the vehicle electrical system, but switches to external battery power if the motor vehicle's battery is removed, stolen, or drops under a predetermined voltage, performing to be a battery backup (BBU) and power conditioner. Who else endorses it? Wirecutter also favors https://elliotttpjd.getblogs.net/66662624/the-2-minute-rule-for-backup-power-supply