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JacobsParts FP5139 Step-up Voltage Converter

4.7722 product ratings

JacobsParts Inc (420472)
99.7% positive feedback

Price:

$8.99

Free 2-3 day shipping

Get it between Sat, Apr 27 and Mon, Apr 29

Returns:

30 days returns. Seller pays for return shipping.

Condition:

New

The FP5139 module is small and easy to use. Input: 3-35V DC 9A, Output: 3.5-35V DC 6A, Max Power: 100W when input and output both exceed 20V, otherwise 65W. Useful for a wide range of applications, such as powering 5V USB devices from a 3.7V lithium cell, powering higher powered electronics from a 12V battery, and a wide range of automotive and electronic projects.

About this product

Product Identifiers

Brand
JacobsParts
MPN
FP5139
UPC
0845832027920
eBay Product ID (ePID)
1602267931

Product Key Features

Ripple & Noise
1.16 ounces
Current Conversion
DC to DC
Color
Blue
Nominal Power Rating
100 W
Type
Forward Converter

Dimensions

Weight
0.07lbs.

All listings for this product

item 1 FP5139 100W DC Boost Step-up Adjustable Voltage Power Converter LED Voltmeter
$8.99
Free shipping
item 2 FP5139 100W DC-DC Boost Step-up Voltage Converter Module Adjustable Power Reg...
$16.65
Free shipping
item 3 DC Boost Step-up Adjustable Converter with LCD Screen
$5.99

4.8

4.8 out of 5 stars based on 22 product ratings

22 product ratings

18 users rated this 5 out of 5 stars
3 users rated this 4 out of 5 stars
1 users rated this 3 out of 5 stars
0 users rated this 2 out of 5 stars
0 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

See all 22 reviews

5 out of 5 stars
by gramnpop3Sep 10, 2020
Top favorable review
Great product, fast shipper
I struggled to find a way to operate led panels in my rv ceiling fixtures. I needed a simple way to power them when wired in series. Since I used 3 per fixture, I needed a way to get close to 36 volts. These little boards are perfect for that purpose. Once hooked up to 12 volt battery, I was able to adjust the voltage under load using the built in volt meter (which read about 2 volts different than my cheap multimeter). Still, I was able to run the lights at full brightness but chose to turn them down to 33 volts since the circuit sees 14 volts when the battery is charging. The brightness is barely less and adequate for my needs. These panels are 4 watts each so are 12 watts in total. They produce more light than the two - 15 watt fluorescent tubes that they replace and can operate on some lower voltage conditions when battery voltsge is dropping when away from ac or dc sources. A great product and worth the $ simply for the meter! I bought 2 more! I will measure ooeratingbtemps under full load to determine if I need a fan to cool the heat sink. As these fixtures are in the ceiling, ambient temps easily approach 100 deg F or more in the summer. I will probably install a small 12 volt fan along with a thermostatic probe to turn it on when needed. If you are looking for a dc boost circuit in this product's range, don't hesitate. You can't go wrong with this little board! Please ignore typos, I cannot go back to edit for some reason. Read full review
Verified purchase: Yes | Condition: New
3 out of 5 stars
by brly-5578Oct 12, 2021
Top critical review
It probably works but not for very low voltages
As far as I know, this product is alright. But It didn't work for the project I was going to use it for. If you have a project where a small volatage needs to be boosted ( say under 3 volts ) it may not work. The output voltage I was getting was the same as the input even after adjusting the potentiometer. Also, it would be nice if all these electronic gadgets online had links to their datasheets.
Verified purchase: Yes | Condition: New
4 out of 5 stars
by mhen4284Dec 27, 2020
Works great for my application.
Using this board to get 19V from 12V battery to power my laptop in my RV.. Works great and is pretty RFI quiet compared to an inverter and the stock power supply for the Laptop. Important when running Ham Radio portable. Only issue I had was one of the screw down terminals on the output was reversed in its housing making it impossible to get a wire into it. Unsoldered the connector and soldered wires to the PCB. Will order another one as a spare.
Verified purchase: Yes | Condition: New
5 out of 5 stars
by flowerleafstoreFeb 18, 2021
Capable DC converter.
Great small unit that can run laptops (from lead acid 12V battery) if you have already charged the laptop battery. Will also charge the laptop battery, but you cannot turn on the laptop until battery is full. Put a good mini fan over it. Remember that laptops at 100 percent processing take much more power and may overheat unit. A laptop at idle will easily run off this unit.
Verified purchase: Yes | Condition: New
5 out of 5 stars
by orcimaDec 14, 2020
Wonderful, can't beat it for the price
excellent product. Very good manufacturing and welds. Good quality components, functional screen so no need to get a multi-meter. (And in my experience, accurate too)
Verified purchase: Yes | Condition: New

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Picture 1 of 1

JacobsParts FP5139 Step-up Voltage Converter

About this product

Product Identifiers

Product Key Features

Dimensions

All listings for this product

item 1 FP5139 100W DC Boost Step-up Adjustable Voltage Power Converter LED Voltmeter

item 2 FP5139 100W DC-DC Boost Step-up Voltage Converter Module Adjustable Power Reg...

item 3 DC Boost Step-up Adjustable Converter with LCD Screen

Ratings and Reviews

Most relevant reviews

Great product, fast shipper

It probably works but not for very low voltages

Works great for my application.

Capable DC converter.

Wonderful, can't beat it for the price

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