Can I put two of these in parallel to get 720 watts?

Not a good idea to simply connect in parallel. However, if you hook each one to a 1 ohm ceramic resistor each, then connect them together. The issue is that each one will want to be at a slightly different voltage and they’ll fight each other. You need to buffer that difference with a resistor on each of them.

Large spark when conncting 72v battery normal?

Yes, it is normal to get a rather unnerving spark when connecting the converter to the battery.

What in the input amperage required?

That would depend on the AMP draw of the output, and the voltage of the input. You can probably find a good calculator by googling.

what is the exact output voltage and can it be adjusted?

The exact voltage is 12,4V and don’t have no ajustement

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DC 40V-90V to 12V Converter Voltage Regulator Reducer 48V 60V 72V Step Down to 12V 20A 240W Converter Waterproof Buck Transformer Power Supply for Golf Cart Club Car LED Light

Product ID: 362153079

Details

Brand
Cllena
Color
Grey
Input Voltage
40 volts
Output Voltage
12 volts
Plug Format
2 Pin

⚡40V-90V wide input range

💧IP68 waterproof & dustproof

🔋12V stable 20A output

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Description

🔌 Step down in voltage, step up your game!

BUILT TO BRAVE THE ELEMENTS - IP68-rated aluminum shell offers waterproof, anti-shock, and dustproof durability for any environment.
POWER YOUR DEVICES WITH PRECISION - Delivers a consistent 12V at 20A, ensuring your electronics run smoothly without hiccups.
SMART PROTECTION FOR PEACE OF MIND - Advanced safeguards guard against overload, over-current, over-temperature, short-circuit, and over-voltage.
VERSATILE COMPATIBILITY FOR EVERY PROJECT - Perfect for golf carts, club cars, LED lighting, audio systems, and more—your all-in-one power solution.
UNMATCHED EFFICIENCY FOR MAXIMUM PERFORMANCE - Up to 95% conversion efficiency means less energy wasted and more power where it counts.

The Cllena DC 40V-90V to 12V 20A Converter is a high-efficiency, waterproof voltage regulator designed to deliver stable 12V power at up to 240W. Featuring IP68-rated aluminum housing and multiple intelligent protections, it ensures reliable performance for golf carts, LED lighting, and various electronic systems, making it an essential upgrade for professionals seeking durability and precision.

Specifications

ASIN	B09B72P9TH
Best Sellers Rank	#53,498 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #191 in Power Converters
Brand	Cllena
Color	Grey
Customer Reviews	4.3 4.3 out of 5 stars (61)
Input Voltage	40 volts
Manufacturer	Cllena
Mfr Part Number	DC7212-20
Model Number	Cllena DC40V90V-12V20A
Number of Items	1
Number of Outlets	1
Output Voltage	12 volts
Plug Type	2 Pin
Power Source	DC power supply

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10853 kr

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In stock

Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Iceland.

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TrustScore 4.5 | 7,300+ reviews

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