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DC UPS: StartGuard

STARTGUARD wht bkgndThe abrupt DC system voltage drop that accompanies engine starting can cause communication/navigation electronics 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 sensing 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.


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 8.25 x 4.9 x 3.5 20.1 x 12.5 x 8.9 5.5 2.5

Provides Voltage Protection During Engine Start