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Samlex SAM-250-12 12-Volt 250-watt DC to AC Inverter

3.2 3.2 out of 5 stars 22 ratings
$49.90
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Purchase options and add-ons

Brand Samlex America
Power Source Battery Powered,Corded Electric
Wattage 250.00
Model Name Samlex SAM-250-12 12-Volt 250-watt DC to AC Inverter
Color Blue

About this item

  • Durable construction
  • Compact and lightweight design
  • Soft start & cool surface technology
  • Safety certified with protections for thermal, battery overload, short circuit & earth fault
  • USB charging port

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Samlex SAM-250-12 12-Volt 250-watt DC to AC Inverter

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Samlex SAM-250-12 12-Volt 250-watt DC to AC Inverter

Samlex SAM-250-12 12-Volt 250-watt DC to AC Inverter

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Customer reviews

3.2 out of 5 stars
3.2 out of 5
22 global ratings

Customers say

Customers like the performance of the inverter. They say it works great and is efficient. However, some customers have reported issues with the voltage and fan speed. They mention that the inversion crashes past half load and the fan seems to run under any load.

AI-generated from the text of customer reviews

7 customers mention5 positive2 negative

Customers like the performance of the power inverter. They say it works great, is efficient, and runs well. Some mention that the fan is loud.

"This product was perfect for what I needed and is running great...." Read more

"installed and it worked great." Read more

"Working great in our moterhome" Read more

"Great, efficient inverter, but loud fan..." Read more

3 customers mention0 positive3 negative

Customers are dissatisfied with the voltage of the power inverter. They mention that it blew the fuse immediately and that the fan seems to run under any load.

"...Still works. Fan has gotten very whiny, and voltage crashes past half load… to like 90V. For 4:1 SMPS power supplies it’ll work just fine...." Read more

"...Seems well built. My only complaint is the fan seems to run under ANY load and is quite loud. Almost have 3 Star just because of the fan" Read more

"Took me about 30 days before I used this samlex SAM-250 It blew the fuse immediatly (polarity was confirmed correct)put a new fuse in and it flashed..." Read more

Don’t waste your money.
1 Star
Don’t waste your money.
I used this inverter as a power source for my sump pump that’s rated for 2.5amp at 120. I recorded 3 amps of dc draw while pump was running. Effectively there was no load…. After a few minutes I went to check on it and the light was out indicating no power. Sure enough no ac output. No fuse to replace…. Removed the screw on both sides and found the damn thing isn’t even serviceable…. Both ends are soldered in…. Clipped the wires on dc side and pulled out the board, Found the 30amp fuse was blown…. Sure I could attempt to replace the fuse and use disconnect-able terminals and on the dc side. But honestly it’s not worth it. This thing is cheap chineasium crap… why would you design it like that… how fricken dumb….
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Top reviews from the United States

Adam
2.0 out of 5 stars Cooling fan stopped working after two years.
Reviewed in the United States on July 26, 2022
Verified Purchase
The cooling fan stopped working after two years. Of course, right after the warranty ended.
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Shaofu Chang
5.0 out of 5 stars Nice little unit, I like it.
Reviewed in the United States on May 28, 2015
Verified Purchase
Nice little unit, kind of an unusual design as there's no way to physically bolt it to anything. The absence of mounting flanges required a little bit of creativity. The way the terminal posts are designed allowed the inverter to stand vertical without interfering with the fan, tip over, or short the binding posts to the enclosure if it was metal. I would have like to see thicker gauge wire for a 250W unit, but in a pinch the included pair will do. The inverter has a 30A ATC type fuse but it is mounted internally and by the looks of it soldered in place. In shut down mode the inverter draws about 7mA, on with no load draws something close to 120mA.
Do note, while it comes with cigarette plug adapter modern cars rate their sockets at 10A, meaning the maximum output is 120W max, less realistic efficiency loss your inverter output will be limited to about 90W max. So if you plug your 120W madmax gaming laptop in and it blows the works, don't blame it on the inverter.
Because mine was built into a battery box, it has operated only on loads ranging from 50-150W for a number of hours. I have not attempted to operate it with inductive loads, only resistive. So far so good, fan clicks on and off, keeping itself cool.

Edit: it’s now 2022, this inverter survived occasional use but otherwise lived on the car. Still works. Fan has gotten very whiny, and voltage crashes past half load… to like 90V. For 4:1 SMPS power supplies it’ll work just fine. A linear power supply not so much. For what it’s been used for (Christmas lights on the car) it’s working well still.
One person found this helpful
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Joseph r.
1.0 out of 5 stars keep shopping, this is junk.
Reviewed in the United States on February 4, 2016
Verified Purchase
i just got my second one in the mail yesterday. Excellent inverters. I've tested almost every small inverter out there for a portable solar generator I've developed for future sale. EVERY other inverter tested met on average, half of the advertised efficancey, most had little surge capability if any and a few wouldnt even run the continues wattage theyre supposed to run. This Samlex performed better then everything i tested in the 200-400watt range....after beefing up the factory wiring from 14awg to 10 of course. i ran a 250 watt space heater for hours on a 50ah battery, it started a hotel fridge and ran it so the surge was actually stated correctly and i even tested efficancy up 3% from the advertised 90%. thats huge for a small inverter. it ran my lithium battery chargers also, modified sine wave and all....must be clean enough. turn it on and it tests the fan briefly and goes back to idle and stays quiet unless a load above 5-10 watts is applied. perfect for small off grid systems. five stars from a fella with LOTS of expecience counting amps and volts with small to large inverters running off power from the sun.

4 month update: well i started out happy and now im rather upset. i bought 4 of these 250 watt inverters and 2 of them are junk. flat out stopped working. the usb work but no AC. not only that but out of the box the hz stayed pretty steady on 60 and now they all run between 62-64.5 hz....the powerput plumited on all four after about a month. out of the box theyre pretty and work great but fade fast. save your money and get a pure sine. microsolar an CNBOU are inexpensive brands but are both much higher quality builds. cleaner, more effecient and quieter...oh yeah....and they work.
6 people found this helpful
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Ev Go
5.0 out of 5 stars Great buy for a well priced inverter!
Reviewed in the United States on July 6, 2020
Verified Purchase
This product was perfect for what I needed and is running great. I did order one that worked right off the bat but couldn't get it going after a few hours. The company sent me a new one right away! Great buy for a well priced inverter!
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Jonathan
4.0 out of 5 stars Great, efficient inverter, but loud fan
Reviewed in the United States on March 30, 2017
Verified Purchase
Great low idle current draw <170-200ma. Seems well built. My only complaint is the fan seems to run under ANY load and is quite loud. Almost have 3 Star just because of the fan
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Davey Jones
2.0 out of 5 stars Super loud fan
Reviewed in the United States on April 10, 2021
This one gets 2 stars ,. at least it still runs after 4 years. It runs my macbook. but the Fan is Super loud. I use it at a hot spot and I have to listen to the loud annoying sound all the time.
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steve Turner
1.0 out of 5 stars Never worked
Reviewed in the United States on August 1, 2015
Verified Purchase
Took me about 30 days before I used this samlex SAM-250 It blew the fuse immediatly (polarity was confirmed correct)put a new fuse in and it flashed input voltage error and it never has worked (tested other power sources) this is a garbage unit and i threw my money away when i ordered it dont do the same, skip this one!
signed
A verry experienced inverter user
2 people found this helpful
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RickP
5.0 out of 5 stars Nice mid-sized inverter
Reviewed in the United States on October 15, 2013
Verified Purchase
Appears well made. Very low standby power usage. Fan stays off on standby and kicks in when load is applied. The fan is fairly loud. Would not recommend if you are going to be close by while using it for long periods of time in a quiet environment. The fan noise would probably be get annoying after a while.
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