The DC-UPS powers your gear during the vehicle using the automobile electrical system, but switches to external battery power once the auto's battery is taken off, stolen, or drops down below a predetermined voltage, performing to be a battery backup (BBU) and power conditioner. A typical UPS can final anyplace https://dallasebwsn.qowap.com/93258371/the-best-side-of-power-supply-backup-for-pc