• GYVRM 12V to 57V boost module
  • DC DC step up converter for Starlink Gen 3
  • CE FCC RoHS boost converter 300W
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AutoSmart Parts

DC to DC Boost Converter 12V to 56V or 57V, GYVRM for Starlink Gen 3 4.5A 300W

DC to DC boost converter 12V to 56V or 57V, perfect for Starlink Gen 3 router. 4.5A output, 300W max, CE FCC RoHS certified. GYVRM brand.

$87.99 AUD
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check Powers Starlink Gen 3 router from 12V battery
check 4.5A output at 56V or 57V, 300W peak
check CE, FCC, RoHS certified
check Compact 74 × 74 × 32mm, mounts anywhere

Select Output Current
Select Input Voltage
Select Output Voltage

Specifications

Model: SDL1256 / 5704D5DC
Type: DC to DC boost converter (step up)
Input voltage: 12V (range 9 to 30V)
Output voltage: 56V or 57V (choose variant)
Output current: 4.5A max
Output power: 201 to 300W
Frequency: 50 Hz
Size: 74 × 74 × 32 mm
Weight: 280g
Certification: CE, FCC, RoHS

Compatible With

Primary use: Starlink Gen 3 router 12V install in caravans, RVs, boats, off grid setups
Other uses: Industrial control, LED lighting, instrumentation, refrigeration, displays, digital products
Not compatible with: Solar panels or wind turbines (direct connection)
Not for charging: Cannot charge lithium or lead acid batteries

What’s Included / Care Instructions

What's included:
• 1 × GYVRM DC boost converter (56V or 57V output variant)

Care:
• Long term use should not exceed 50% of max load
• Use input fuse or air switch for safety
• Keep input and output cables under 2 metres (use thicker wire for longer runs)
• Ensure adequate ventilation to avoid overheating
• Verify polarity before connecting (no reverse polarity protection on output)

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Install Guide

1. Turn Off All Power

Switch off all power sources and load switches. Double check polarity on all connections before proceeding.

2. Wire Output to Starlink

Connect OUTPUT- to your Starlink negative, OUTPUT+ to positive. Use proper gauge copper wire, keep total length under 2 metres.

3. Wire Input and Power On

Connect a fuse or breaker inline to INPUT+ from your 12V battery positive. Connect INPUT- to battery negative. Confirm all polarities, then turn on power.

Common Questions Before You Buy

Which voltage should I choose, 56V or 57V?
Check your Starlink Gen 3 router's power input spec. Most run on 57V DC. Some setups use 56V. If unsure, check the Starlink router label or manual.
Will it run my Starlink for hours?
Yes, as long as your 12V battery has the capacity. Starlink Gen 3 draws roughly 50 to 80W average, so a 100Ah deep cycle battery typically runs it 12 to 18 hours.
Can I connect it directly to a solar panel?
No. The converter cannot connect directly to solar panels or wind turbines. You need a battery in between with proper charge controller.
Is it safe for long term use?
Yes, but for prolonged use don't exceed 50% of max load (about 150W). Ensure good ventilation around the unit. Use an input fuse for safety.
What if my cable run is more than 2 metres?
Increase the wire diameter (lower AWG number) to compensate for voltage drop. Otherwise the output voltage will sag and the Starlink may not power on properly.