GFS Power

DC UPS – Mobile

Start Guard


Provides Voltage Protection During Engine Start

The abrupt DC system voltage drop that accompanies engine starting can cause microprocessor-based voice and data transmitters to “dump” programmed memory.

StartGuard solves this problem by providing supplemental voltage to sensitive electronics while the engine is cranked. It contains a sealed rechargeable battery which is switched on-line to electronics when the starter switch or solenoid is engaged. When the engine is running StartGuard automatically goes off-line and the internal battery is recharged by the alternator.

Start Guard

Ordering information:

  • NS-12-20     Mobile DC UPS Startguard

Input Voltage: 13.8 – 14.8 VDC nominal, 15.5 VDC max.
Relay Activation Input Voltage: 7-15 VDC
Output: 20 amps max.
Battery: 12 VDC, sealed rechargeable, 5-7 year life (typical) 5 amp-hour capacity, Certified by DOT and IATA for shipment by air.
Back-up Capacity (Fully Charged): (See matrix)


Model Input Back-Up Capacity Dimensions Weight
1 Minute 2 Minutes Inches Centimeters Lbs Kg
NS-12-20 13.8-14.8 VDC Nominal,15.5 VDC Max 20 amps 18 amps H W D H W D 5.5 2.5
8.25 4.9 3.5 20.1 12.5 8.9


© GFS Power. Website by Mick's Design.