The DC-UPS powers your products from the vehicle utilizing the auto electrical system, but switches to external battery power when the auto's battery is taken out, stolen, or drops below a predetermined voltage, acting for a battery backup (BBU) and power conditioner. Neither ZDNET nor the author are compensated for https://remingtonx4nu1.slypage.com/34663446/not-known-facts-about-power-supply-backup