Description
- High-concerned chemical: None
- is_customized: Yes
- Output Current: 120A Max
- Output Frequency: 50/60Hz
- Model Number: ST12000W
- Type: DC/AC Inverters
- Weight: 16KG
- Size: 50*30*20cm
- Output Type: SINGLE
- Brand Name: SAINT OLM
- Origin: Mainland China
- Certification: CE
- Input voltage: 12V 24V 48V
- Output voltage: 100V/110V/120V 220V/230V 50Hz/60Hz
- Wave Form: Pure Sine Wave
- 12V Inverter Charger Current: 20A
- 24VV Inverter Charger Current: 10A
- 48V Inverter Charger Current: 5A
- UPS response time: 10ms

Heartfelt advice: SAINTOLM only sells Top-quality products. We do not engage in any fraudulent activities.
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We will never label inverters with false power!
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Meanwhile, we hope that buyers have professional knowledge. In this way, you will know that the products we sell are of good quality and genuine!
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Don't be deceived by the advertisements on the web page! If you are not professional, please do not be deceived by the labels on the inverter! All of these can be modified at will!
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The quality of the product speaks for itself! Among inverters of the same power, the SAINTOLM inverter is almost the heaviest! Our materials are the most abundant! If you can't determine whether the product has sufficient power, you can judge whether the product is reliable by its weight!
I'm very grateful that you patiently read through my introduction. I hope my explanation can be of help to you
The best greeting
Eli

Why Choose ST-12000 ULTRA Series
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Multi-transformer inverter:The ultra-high inverter power is very stable. Multiple high-power transformers operate in parallel, which is even more stable and has a higher load capacity. It is far superior to amorphous inverters. Therefore, it is heavier, more expensive and more reliable!
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Powerful DC To AC inverter: This car power inverter delivers 500W-6000W of continuous DC 12V/24V/48V to AC 110V/120V/220V/230V power and up to 12000W of peak surge power when the load is started.
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Ultra-high conversion efficiency:The car inverter has >88%-𝟗2% Conversion efficiency, it maximizes battery life, reducing energy loss and saving money on fuel or solar power.
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Pure Sine Wave Inverter: The power inverter delivers clean&stable AC power just like grid electricity, protects laptops, televisions, medical equipment, and cpap machines, tools, sensitive electronics from damage.
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Safety protection advantages: The SAINTOLM ST-Ultra inverter 1overload/short circuit/overheat/low temperature/reverse polarity/under voltage.
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LED Warning lights : instantly alert you to issues.GFCI GROUND-fault circuit interrupter prevents electric shocks, ideal for outdoor, boats, rv, truck, cabins, off-grid use
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Auto-speed fan: smart adjusts cooling based on workload
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Three-in-one multi-functional: ①Inverter function, converting DC To .AC②The UPS uninterruptible power supply function ensures that your equipment is always powered (from the battery or the power grid). ③ . Charging function: It continuously charges the battery with a small current, protecting the battery, extending its lifespan, and ensuring that the battery has sufficient power to prevent the situation where there is no power to provide energy during a power outage.
In fact, you only spent the money for one device to buy three products. And these three products have been merged into one product! Lighter! "Higher efficiency!" Safer! More features! Solve more problems! Adapt to more application scenarios!


















































T***i (verified owner) –
I recommend this seller! I recommend this big monster inverter .it weighs about 10 kg!
My rv is equipped with 8 18v 200w solar panels (by area limit) 4s2p. A total of 1600w and 72v the solar controller is saintolm apex180120a. Pv180v 120a. I use 4 groups of 12v 200ah lifepo4 to facilitate the later conversion to a 24v or 48v system.
The inverter runs the air conditioner, microwave oven and everything else in my rv without any problem. Its continuous power is 6,000 watts and the surge power is 12,000 watts. This means that there should be no problem running power-consuming equipment. It can fully cover the power consumption of all devices.
Due to the limited power of my battery or the limited power supply i’m responsible for, i can only test an input current of dc 445a max! And there are no signs of cable heating. Providing sufficient power is by no means a problem.
c***r (verified owner) –
A very expensive inverter, but it’s worth it! Don’t miss it!
Beautiful works of art. The power is real. Even more so, the weight far exceeded my expectations. It looks very reliable.
I use it semi-off-grid at home. In the area where i live, not only is the electricity bill expensive, but the power system is also very unstable. Therefore, i have to need an inverter that has both ups and charging functions!
Perfect.
This is a big guy. Its weight and volume look more like those of a low-frequency inverter.
Adopt a multi-transformer inverter mode. It’s very reliable.
Although it cost me a sum of money, i think it was well worth it. It won’t abandon you at critical moments and can even solve more problems.
た***r (verified owner) –
What a terrifying product! I can’t believe it’s made in china! It’s a perfect work of art!
Japanese manufacturing is being surpassed. German technology seems to have not advanced for a long time. Inverters produced in the united states are not as reliable as those produced in china.
I once believed that equipment produced in japan was the most stable and reliable! However, there is no doubt that we have failed in the field of new energy.
I can’t believe an inverter with a peak power of 12000w and a rated power of 6000w can weigh 11kg. It’s huge, way too big. Just by looking at its weight, you can tell it’s very reliable.
The craftsmanship looks much better than inverters produced in japan. (there are few inverter brands in japan. Most of the expensive inverters on amazon japan are actually from china.) I firmly believe it’s superior to the inverters on amazon, none of which are as heavy as this big guy. It’s terrifying.
た***r (verified owner) –
At the seller’s suggestion, i replaced the 48v-230v inverter. Because i need to use a super large compressor.
I am very satisfied with this product. The package arrived intact and sturdy.
The seller is honest and reliable, and has not deceived me in any way. I’m very happy.
Everything is working perfectly and automatically.
This inverter is very stable and reliable. I no longer have to worry about equipment damage during work this time. Stable and reliable products are very important, as they are more reliable than buying cheap ones.
What i learned from aliexpress (or rather chinese people) is that if you spend a very cheap amount of money on a product that looks very cost-effective, you will spend another amount of money on a new product in the near future.
f***i (verified owner) –
It is large and massive with a heavy weight, which indicates the quality of the product.
This product is not a children’s toy.
And it has a feature to charge batteries from home electricity.
And the seller is kind and excellent with very fast response.
He gave me a free upgrade for the device, which is a remote control screen.
And talking about the product never ends.
I recommend dealing with this store. I told them about the problem I was facing, and they honestly and sincerely told me the solution. The merchant didn’t just want to sell but wanted customer satisfaction first and foremost.
Even after the sale, he responds to questions very quickly.
The package arrived very quickly from DHL and was tightly and securely packed.
And I am very happy.
き***r (verified owner) –
This unit deserves it’s 5 star rating.
The st-10000ultra inverter works as described in the add. Fan noise is very acceptable at least in my garage. I purchased it to perform load testing on 48v lifepo4 batteries. I also use a fan forced 2 temperature heater 750w and 1000w and 3000w air compressor for testing.
Running without pressure!perfect!
Then i turned it down to the lower setting and the input amps was 53.
The inverter is always gentle.
If you choose a high-power inverter, i suggest you choose a 48v system, which has a higher voltage than 12v. This way, the battery provides lower current and is safer for the system and equipment. Higher conversion efficiency!
Do not choose a 12v system unless absolutely necessary.
안***r (verified owner) –
That’s too exaggerated. This inverter is as big as a monster. Too big, too big. I can guarantee that the weight will definitely exceed 10kg. The same power inverter i bought before only weighed half of it, and they looked like children’s toys in front of saintolm st-12000 ultra.
I even suspected at one point that this was a low-frequency inverter.
After testing, it is very reliable.
I love it too much.
Great service, both before and after purchase
A trustworthy brand.
I am not professional enough to provide a sufficiently professional evaluation like other professional buyers. I hope my evaluation can help others.
Sincere greetings
Love comes from korea
E***s (verified owner) –
I ordered the 12 kw inverter with 48 v dc input. There was a sticker on the back that said “12 v dc input.” I panicked a bit, but since it’s also a battery charger, i connected the 220 v ac cord, turned on the inverter, and then measured the dc pins: thankfully, 48 v. after installing everything and connecting it to a 48 v battery, the inverter works perfectly. The correct label (48 v) was barely visible on the front. All’s well that ends well. I’m very happy with this inverter.