What size fuse should be used on the input side?

The input at 12v would be 24amps since the output is 288 watts at 48v. Also that raises some concern because the input wires are 16awg, which is rated to handle only about 10amps at 12v. This is not to US wiring standard and could potentially cause a fire. When I asked the seller about this they simply answered "yes, it is ok" with zero explanation as to why. But the facts are it isn't technically safe with those specs. That input wire should be at least 8-10awg if using a 30amp fuse.

So will this go both ways? 12v to 48v up or 48v to 12v down?

No, it is 12v to 48v dc step up converter

Will the output be regulated, that is limited to 3a, 14 watts, regardless of the load? and with no damage to the buc?

Yes, this 12v to 48v converter will automatically adjust the current and power required by the device at the output, provided that the voltage of your device is 6-16v.

I am looking to convert a 18V 5 amp hr RYOBI one plus drill battery to a 12V lighting for an EBIKE is this suitable for this and which one do I need?

Please check the model of 24V TO 12V 10A 120W Step Down,here is the ASIN: B0963J2YBD

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DC 12V Step Up to 48V 6A Boost Converter 288W DC Voltage Regulator Power Converter Transformer for Golf Cart Club Car Solar System

Product ID: 473894968

Details

Brand
EAGWELL
Colour
Silver
Item weight
0.66 Pounds
Input voltage
12 Volts
Output voltage
48 Volts

⚡288W high power output

🔋12V to 48V step-up conversion

🛡️Full multi-protection smart chip

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₩127082

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Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Elevate Your Voltage, Empower Your Drive!

POWER YOUR AMBITIONS - Boost your 12V system to a robust 48V with 288W output—perfect for high-demand devices.
VERSATILE POWERHOUSE - Ideal for golf carts, solar setups, vehicles, LED lighting, and DIY projects—power up your lifestyle.
EFFICIENCY THAT SAVES - 97% conversion efficiency means less energy wasted and more power delivered.
BUILT TO BRAVE ANY ENVIRONMENT - Durable aluminum shell with silicone sealing ensures reliable performance in harsh conditions.
SMART PROTECTION ZERO WORRIES - Integrated smart chips guard against voltage spikes, overloads, and short circuits for ultimate device safety.

The EAGWELL DC 12V to 48V 6A Boost Converter delivers a powerful 288W output with an impressive 97% efficiency. Engineered with a rugged aluminum shell and silicone sealing, it withstands tough environments while smart chip protections safeguard your devices from voltage irregularities. Perfect for golf carts, solar systems, vehicles, and more, this step-up converter is the reliable upgrade your power setup needs.

Specifications

ASIN	B0B7WZGCM3
Best Sellers Rank	#64,429 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #235 in Power Converters
Brand	EAGWELL
Color	Silver
Customer Reviews	4.2 4.2 out of 5 stars (143)
Input Voltage	12 Volts (DC)
Item Weight	10.56 ounces
Manufacturer	Eagwell
Mfr Part Number	I1600-AM
Model Number	11-16V to 48V 6A
Output Voltage	48 Volts (DC)
Plug Type	2.1mm center positive barrel jack
Power Source	DC DC Converter
Unit Count	1.0 Count
Warranty Description	1 Year Manufacturer

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