You can damage the battery or the inverter by making it spark while connecting. It is recommended to use a resistor between the battery and inverter before connecting. This will charge the capacitors and there will be zero spark. If you don’t have a resistor handy and most people don’t you can do what I did. Take a simple test light the kind that looks like an ice pick, and clip the alligator clip to the battery cable and touch the other end to the battery terminal. The bulb in the test light will illuminate and then go out indicating the capacitors are charged. This test light must have an incandescent bulb to work. Not an led.
The only pieces at risk of damage are the screws 🪛 bolts 🔩, and washers. Pieces of molten metal could be generated and hurt people very seriously. Inverter internals and battery won't get damaged. Disclaimer: do it at your own risk. I don't take responsibility for damages.
I bought one for a home solar system, works great and it sells for as low as $210 now. Buyer beware as many Asian brands advertised as pure sine wave but are actually modified sine wave.
I just installed my unit but it is reassuring to see others using the same unit. However the only thing different I am doing is installing an Ultra-capacitor behind the inverter to lower the battery voltage fluctuations and if the battery is fully charged then the unit will grab power from the Ultra capacitor before the batteries. The secondary advantage being that excess power from the solar panels will get used before the battery gets touched if installed correctly. It almost acts as a sort of solar soft start for the unit. Some people will say that you don’t need it but people who have it show it’s worth having. It’s just too bad that not many videos cover adding Capacitors to your system. It’s likely just because it can be the more dangerous thing to touch with bare hands when installing. So wear gloves. They increase the life of your system too by offloading cycling from the batteries and making power immediately available faster than even lithium.
I wish you could have showed the watts being used when running your AC and Microwave and everything at the same time. That is what I was waiting for as several other people cant get the rated watts out of their vevor inverter! Thanks for making the video as it helped.
You can make a connection with a big resistor between the cable and the battery terminal to charge the capacitors in the inverter without a big spark then make the final connection with the cable to the terminal to keep from blowing out the inverter.
I have a Tripp Lite 1250 watt inverter which is quite heavy compared to these newer units, why is that ? Is it less efficient or possibly better ? Thanks 👍
I'm waiting for the video where JJ2K adapts a truck's ladder rack to his Monkey, mounts solar panels on top, inverters on the sides, Xmas lights, DC fridge..the works, and drives around town with that setup. Total Mad-Max style AZ hyperinflation-survival-bike.
So, that battery sag (dropped to 11.?v while you had the big load) is potentially a problem. Keep in mind this is a 12v DC input, so at full rated load, you're pulling almost 300A. For the peak 7000w, that would be about 700A spike! I'll bet almost anything that battery isn't rated for a 300A output. You see a flashing red warning light near the power light on the invert during these situations. Best to have multiple batteries paralleled (3 or more) so that each battery isn't exceeding it's rated output. 4 or 5 if you expect the 7000w spikes to actually be a thing on your implementation. Those lithium batteries do have a surge/spike rating but you still need to allow enough head room on the batteries to handle that spike. One big issue with this setup could be that parts may fail in the inverter if the input voltage is insufficient. With a lower voltage a FET may not turn on fully and therefore it generates massive heat and it burns out, and you have a dead inverter, because YOU didn't supply it enough DC power. When paralleling batteries, the neatest solution is to run each battery positive to a honking big bus bar, and the same for the negatives (to a different bus bar) and then connect the inverter input to those bus bars. This ensures you have sufficient input and the inverter won't struggle to turn those FETs on, giving you safe operating conditions. Also, "sine wave" inverter isn't specific enough. Insist on "Pure Sine Wave" inverters. Never go for the cheaper modified sine wave or something only labelled as "sine wave" (if your goal is clean power like you get from your utility grid in your house).
Man I don't how in the world this video doesn't have more likes , I was on my way to spending an arm and leg on a ecoflow or blue etti , I'm going with this , what's the best way to solar charge these batteries.
👍👌❤️🇨🇦, sweet review, I would like to have a temp on the cables, I would be installing larger ones for heavy loads, less voltage loss, I would also like to see the same display that is on the inverter to be also on the remote display, the little battery display is basically useless, having the volts and watts on the display would be a big bonus
I just found this video and it is very helpful. I have a question about this inverter because I am hoping to buy one soon. How long does it last with the amount of load that you put in it? I appreciate your information.
Just checked on Amazon...it's out of stock. It is unknown when more will be available. But thanks, Sensei, I'm really, no REALLY, impressed with this bit of kit.
Nice review, thank you kindly for this upload.Your knowledge and overall rundown of this inverter will help me decide rather to purchase or not. Keep informing the people...
So, how's the inverter holding up since you did this video? I'm thinking about getting one of these, or the 5000 watt version. It would've been nice to see the inverter display when you had your AC, microwave etc running at the same time to know the combined power draw and to know how much more you could turn on, if any at all.
I bought one of those things found it to be cross wired from factory did continuity test on the four out put receptacles and the neutral and hot were swapped on every other one of the 4 that can’t be good but the ground toned out fine this was also the case at the bottom contacts between the receptacles and the hard wire contacts below
Not bad of a test only thing I seen was the voltage on the unit and remote did not match even with no load on that unit. With that big of a load I bet the battery will not last long but it do it.
Two things how do you change the fuses not in the manual…Second tell me next year if the display is still working…I’ve seen a lot of reviews on these things and apparently the display goes dim and unreadable. Have fun stay safe.
I thought about buying a vevor 2500w inverter but have some not so good reviews. I have a renogy 700w its a good inverter but too small for what I need. Most of the bad reviews on vevor were it didn't last much over a year and another person said it almost caught on fire. I need to run a 1400w chipping hammer but less than 5 minutes at a time.
Always better to go bigger than you need & not run them so hard, it may have a higher idle draw but will handle inductive loads better, ie: motor starting, microwaves, coffee machines, etc.
I love this inverter, however..... How do I calculate how long I can run it? Battery "Ah capacity" as how it relates to load = time? I am obviously a newbie and need some help in the design. Initially I bought a Ecoflow River 2 (300w) powered by Renogy 100w Solar panel to get started and want to eventually bump it up to 2000w+ for when I leave on my USA Ultimate road trip (Honda Odyssey build out). I need to calculate total Ah needed to finalize the build out and see how it affects my budget on the battery costs. I thank you in advance for your time and help on this matter....... (GRIN)
Great question. What's the amp hour of your battery? Take that number and multiply it by battery voltage. My setup for example. 300A x 12.8V = 3840 watt hours... then you take wattage draw... let's say its 1000 watts... divide watt hours by wattage draw... 3840 divided by 1000 = 3.84 hours... I usually round it down to the next number to stay conservative so it'll run for appropriately 3 hours safely...I hope this helps you!
@@tobyz.3452definitely go lifepo4 for this if it is in ur budget, but also remember to check on the battery BMS size for charging & discharging in particular as u will need to be able to supply 12v @ 250A-300A continuous output for 3000W-3500W, 12v & 200Amp Battery output will give you around 2500W. Hope this helps.
im sorry if I am going "off grid" that is the last inverter i am going to rely on, I want a known good inverter that can run 24/7 and not fail in 2 years
Are you able to plug that into your home? Electricity one hundred ten volt circuit and power it off of that, instead of a battery I want to get the 48 V. Version so I'm sure I can hook the 48 V to my power box downstairs safely. And then I could run a Bitcoin miner. And make five thousand dollars every year
The main issue I see here is most 100AH batteries have a maximum continuous draw of 1250 Watts, and at that draw the battery will last 1 hour maximum. There's no way a 400 Watt solar is going to keep that battery from discharging so you are going to be "dead in the water" within one hour. So much for keeping cool in hot weather!
Website claims less than 1amp. I just ordered one a few days ago and a 260ah battery for my truck.hopefully it will run a mig welder for offroad repairs.
Buyer beware if you ever receive a bad unit take if from me VEVOR will leave you on your own and that's my personal experience with this company and they will give you the runaround. I am going to make a video showing what I got in the box. LET'S SAY THE VIDEO WON'T BE A GOOD LOOK FOR THIS COMPANY.
Everything in the video could probably read of the website and manual, useful video review of such product includes oscilloscope reading no load and underload, and proction testing to see if the claim in the manual stand true, otherwise this was a waste of time.
BE VERY CAREFUL. these inverters blow up. I'm serious. a guy gave me this exact one and the company cut corners on diodes to protect the IGBTS and the failed causing the whole inverter to smoke up. sure it works good (I fixed it and tested it) its just it will blow up.
Nah, they pretty much always spark. Your on/off switch only isolates the output. The input will always charge the caps as soon as you connect it. Use something resistive (a 12v bulb, an actual resistor about 20ohm and 5-10w or even a graphite pencil led will work) It only takes 3-5 seconds and the caps will be charged enough that that inrush of current will be subdued enough that the cable touching the terminal won't spark. Also the caps should hold that charge for long enough that you don't have to rush to swap out the resistive item and get the cable to the terminal. Well over a minute or more, so don't stress and start rushing. Keep it slow and safe.
Great video I like to comment about using the test light so you don't get the spark too late for me for that 1. Also no one addresses the hardwire terminal box which 1 is the positive neutral and ground on it ? When they use a black yellow and red wire all known to be hot wires
Give it a year, a year and a half tops of continuous use, especially when powering inductive loads, and I can pretty much guarantee that you'll be sending this unit to a shop for repair. All high frequency, transformerless inverters on the market have a much higher, failure rate when compared to low frequency, transformer based inverters. The reason for this is that these cheap, lightweight inverters don't have an iron core, copper wound, iron core output transformer. And a 7,000 Watt surge capacity for a 3,500 Watt inverter is pretty wimpy when you consider that a low frequency inverter inverter offers a minimum surge capacity of 10,500 Watts. And you really ought to reconsider your claims about this product. This inverter is absolutely NOT certified for use with medical equipment. It's not even UL-1741 listed. If a patient is injured because of your recommendation that this inverter is suitable for use with medical equipment, you're probably going to find yourself in legal hot water.
You can damage the battery or the inverter by making it spark while connecting. It is recommended to use a resistor between the battery and inverter before connecting. This will charge the capacitors and there will be zero spark. If you don’t have a resistor handy and most people don’t you can do what I did. Take a simple test light the kind that looks like an ice pick, and clip the alligator clip to the battery cable and touch the other end to the battery terminal. The bulb in the test light will illuminate and then go out indicating the capacitors are charged. This test light must have an incandescent bulb to work. Not an led.
Yes I use an old 21 watt car bulb in series to pre charge the capacitors.
Do you mean like a fuse
The only pieces at risk of damage are the screws 🪛 bolts 🔩, and washers. Pieces of molten metal could be generated and hurt people very seriously.
Inverter internals and battery won't get damaged.
Disclaimer: do it at your own risk. I don't take responsibility for damages.
I bought one for a home solar system, works great and it sells for as low as $210 now. Buyer beware as many Asian brands advertised as pure sine wave but are actually modified sine wave.
I just installed my unit but it is reassuring to see others using the same unit. However the only thing different I am doing is installing an Ultra-capacitor behind the inverter to lower the battery voltage fluctuations and if the battery is fully charged then the unit will grab power from the Ultra capacitor before the batteries. The secondary advantage being that excess power from the solar panels will get used before the battery gets touched if installed correctly. It almost acts as a sort of solar soft start for the unit. Some people will say that you don’t need it but people who have it show it’s worth having. It’s just too bad that not many videos cover adding Capacitors to your system. It’s likely just because it can be the more dangerous thing to touch with bare hands when installing. So wear gloves. They increase the life of your system too by offloading cycling from the batteries and making power immediately available faster than even lithium.
I wish you could have showed the watts being used when running your AC and Microwave and everything at the same time. That is what I was waiting for as several other people cant get the rated watts out of their vevor inverter! Thanks for making the video as it helped.
probably 1350w on the air conditioner, 400w for electric fridge and 1200w 0n microwave
You can make a connection with a big resistor between the cable and the battery terminal to charge the capacitors in the inverter without a big spark then make the final connection with the cable to the terminal to keep from blowing out the inverter.
This is a good idea but the right solution is a flyback diode. Check that out.
I have a Tripp Lite 1250 watt inverter which is quite heavy compared to these newer units, why is that ? Is it less efficient or possibly better ? Thanks 👍
This was a great review of a great product...... Thanks for sharing..... Better than the last one you had that started on fire...
AMAZING-VEVOR HAS SOME GOOD STUFF/ THANKS MUCH
Keep testing. Panel input,battery charge, current draw, please post, I’m setting up a new system for my enclosed trailer, real world data is the best.
I just bought the 2500W and it won’t stop beeping. It has 1/0 wire and is reading 12v input but won’t give any output and beeping non stop.
i like the Vevor 3600 Watt CGI outlet version. I was very impressed with the demo i saw.
Do you think they are really GFCI just because it says they are?
@@MikeJones-rk1un Thats a good question
@@mannyfragoza9652 I've seen a guy test them and his were not GFCI.
I'm waiting for the video where JJ2K adapts a truck's ladder rack to his Monkey, mounts solar panels on top, inverters on the sides, Xmas lights, DC fridge..the works, and drives around town with that setup. Total Mad-Max style AZ hyperinflation-survival-bike.
I'm working on it... lol
The question is not can it run these loads. The question is how does the inverter hold if it runs heavy loads all day long.
Es buenazo para hacer la conexión con la batería.
So, that battery sag (dropped to 11.?v while you had the big load) is potentially a problem.
Keep in mind this is a 12v DC input, so at full rated load, you're pulling almost 300A. For the peak 7000w, that would be about 700A spike! I'll bet almost anything that battery isn't rated for a 300A output. You see a flashing red warning light near the power light on the invert during these situations.
Best to have multiple batteries paralleled (3 or more) so that each battery isn't exceeding it's rated output. 4 or 5 if you expect the 7000w spikes to actually be a thing on your implementation. Those lithium batteries do have a surge/spike rating but you still need to allow enough head room on the batteries to handle that spike.
One big issue with this setup could be that parts may fail in the inverter if the input voltage is insufficient. With a lower voltage a FET may not turn on fully and therefore it generates massive heat and it burns out, and you have a dead inverter, because YOU didn't supply it enough DC power.
When paralleling batteries, the neatest solution is to run each battery positive to a honking big bus bar, and the same for the negatives (to a different bus bar) and then connect the inverter input to those bus bars. This ensures you have sufficient input and the inverter won't struggle to turn those FETs on, giving you safe operating conditions.
Also, "sine wave" inverter isn't specific enough. Insist on "Pure Sine Wave" inverters. Never go for the cheaper modified sine wave or something only labelled as "sine wave" (if your goal is clean power like you get from your utility grid in your house).
Excellent comment. Thank you so much!
Man I don't how in the world this video doesn't have more likes , I was on my way to spending an arm and leg on a ecoflow or blue etti , I'm going with this , what's the best way to solar charge these batteries.
Thank you, a good mppt charge controller will do the trick
👍👌❤️🇨🇦, sweet review, I would like to have a temp on the cables, I would be installing larger ones for heavy loads, less voltage loss, I would also like to see the same display that is on the inverter to be also on the remote display, the little battery display is basically useless, having the volts and watts on the display would be a big bonus
I just found this video and it is very helpful.
I have a question about this inverter because I am hoping to buy one soon.
How long does it last with the amount of load that you put in it?
I appreciate your information.
Awesome review, thank you for helping me to move forward with my purchase!
Fantastico video... ya nada mas estaba esperando qué se ardiera el bms de la bateria... con una carga de arriba de 200 amps .. muy buen video,
How do you hardwire this unit the instructions do not give you wire color codes ?
Just checked on Amazon...it's out of stock.
It is unknown when more will be available.
But thanks, Sensei, I'm really, no REALLY, impressed with this bit of kit.
Shows in stock using link in description box!
Nice review, thank you kindly for this upload.Your knowledge and overall rundown of this inverter will help me decide rather to purchase or not.
Keep informing the people...
Is it still working after a year ?
Thanks for showing.
You should Always connect the Positive 1st.
So, how's the inverter holding up since you did this video? I'm thinking about getting one of these, or the 5000 watt version. It would've been nice to see the inverter display when you had your AC, microwave etc running at the same time to know the combined power draw and to know how much more you could turn on, if any at all.
Still running great!
I bought one of those things found it to be cross wired from factory did continuity test on the four out put receptacles and the neutral and hot were swapped on every other one of the 4 that can’t be good but the ground toned out fine this was also the case at the bottom contacts between the receptacles and the hard wire contacts below
Tha would explain why mine just sparked out and almost caused a fire...
How much was it pulling while running the ac microwave and fridge
did you hard wire it in the chinook or one of the outlets?
Good looking unit , thanks for sharing , God bless !
Thank you brotha! God bless you!!
Not bad of a test only thing I seen was the voltage on the unit and remote did not match even with no load on that unit. With that big of a load I bet the battery will not last long but it do it.
Two things how do you change the fuses not in the manual…Second tell me next year if the display is still working…I’ve seen a lot of reviews on these things and apparently the display goes dim and unreadable. Have fun stay safe.
What size are the cable lugs on this unit? I can't find that info in the description. I want to buy better cables. Thanks.
Hi Sensei.
So that has 25 amp output?
That's bloody good if it's so.
Many thanks.
I thought about buying a vevor 2500w inverter but have some not so good reviews. I have a renogy 700w its a good inverter but too small for what I need. Most of the bad reviews on vevor were it didn't last much over a year and another person said it almost caught on fire. I need to run a 1400w chipping hammer but less than 5 minutes at a time.
What size is your air conditioning unit? Nice video.
One question...... could you hook up two inverters in series or parallel in a system?? or it's better to get a bigger wattage one to run?
I'd get a higher wattage inverter
@@jiujitsu2000 thank you
Always better to go bigger than you need & not run them so hard, it may have a higher idle draw but will handle inductive loads better, ie: motor starting, microwaves, coffee machines, etc.
I love this inverter, however..... How do I calculate how long I can run it? Battery "Ah capacity" as how it relates to load = time? I am obviously a newbie and need some help in the design.
Initially I bought a Ecoflow River 2 (300w) powered by Renogy 100w Solar panel to get started and want to eventually bump it up to 2000w+ for when I leave on my USA Ultimate road trip (Honda Odyssey build out).
I need to calculate total Ah needed to finalize the build out and see how it affects my budget on the battery costs.
I thank you in advance for your time and help on this matter....... (GRIN)
Great question. What's the amp hour of your battery? Take that number and multiply it by battery voltage. My setup for example. 300A x 12.8V = 3840 watt hours... then you take wattage draw... let's say its 1000 watts... divide watt hours by wattage draw... 3840 divided by 1000 = 3.84 hours... I usually round it down to the next number to stay conservative so it'll run for appropriately 3 hours safely...I hope this helps you!
@@jiujitsu2000 Thank you for the math. I do not have a battery yet, but this helps in finalizing LiFePo4 battery(s) selection. Thanks again!
@@tobyz.3452 you're welcome!
This video also has some good info www.youtube.com/watch?v=zTi_NQzU
@@tobyz.3452definitely go lifepo4 for this if it is in ur budget, but also remember to check on the battery BMS size for charging & discharging in particular as u will need to be able to supply 12v @ 250A-300A continuous output for 3000W-3500W, 12v & 200Amp Battery output will give you around 2500W. Hope this helps.
Thanks for this video
Most welcome. Thank you
How many watts solar do you use to charge and run your RV system?
I use 400 watts. I have videos on my solar and Chinook playlist
im sorry if I am going "off grid" that is the last inverter i am going to rely on, I want a known good inverter that can run 24/7 and not fail in 2 years
Are you able to plug that into your home? Electricity one hundred ten volt circuit and power it off of that, instead of a battery I want to get the 48 V. Version so I'm sure I can hook the 48 V to my power box downstairs safely. And then I could run a Bitcoin miner. And make five thousand dollars every year
You made a very good e
The main issue I see here is most 100AH batteries have a maximum continuous draw of 1250 Watts, and at that draw the battery will last 1 hour maximum. There's no way a 400 Watt solar is going to keep that battery from discharging so you are going to be "dead in the water" within one hour. So much for keeping cool in hot weather!
how many watts of solar would you imagine is needed in this case?
Very nice, but to buy it i need to sell my kidney first.
How much?
@@rheidtech
Under $300, so not bad for what you're getting.
Currently out of stock though😭😭😭😭
@@dandycat2204 out of kidneys? Wow. That sucks. Just wanted 1. Dont need it.. just prepping ya know. 😅
@@rheidtech
Are you sure, cos I do have a spare...it's yours for the bargain basement price of $500,000.
Barely used.
@@dandycat2204 yeah right...prolly used the piss out of it... ill be in touch. Lol.
Where goes the fuse that it comes with ? Manual doesnt say
Your cm to inches conversion is very wrong- 0.98 inches is 2.489 cm, NOT 9.5 cm. Just an honest mistake.
How much power does it use in standby mode?
Website claims less than 1amp. I just ordered one a few days ago and a 260ah battery for my truck.hopefully it will run a mig welder for offroad repairs.
Where did you get the battery from?
Which one? I had 2 in this video. Both from Amazon
@JIUJITSU2000 the big one at the start of the video when you hooked up in the inverter
@@blakerogers407 this one can be found on Amazon. Link in this video... ruclips.net/video/BBIhaqcMPG0/видео.html
🏆🏆🏆
Buyer beware if you ever receive a bad unit take if from me VEVOR will leave you on your own and that's my personal experience with this company and they will give you the runaround. I am going to make a video showing what I got in the box.
LET'S SAY THE VIDEO WON'T BE A GOOD LOOK FOR THIS COMPANY.
Everything in the video could probably read of the website and manual, useful video review of such product includes oscilloscope reading no load and underload, and proction testing to see if the claim in the manual stand true, otherwise this was a waste of time.
BE VERY CAREFUL. these inverters blow up. I'm serious. a guy gave me this exact one and the company cut corners on diodes to protect the IGBTS and the failed causing the whole inverter to smoke up. sure it works good (I fixed it and tested it) its just it will blow up.
I'd be interested to know more about your setup. What sort of battery were you using?
@@CollinBaillie lifepo4s and Agms at 12v
They don't usually spark if you leave them turned off during connection.
Nah, they pretty much always spark. Your on/off switch only isolates the output. The input will always charge the caps as soon as you connect it. Use something resistive (a 12v bulb, an actual resistor about 20ohm and 5-10w or even a graphite pencil led will work) It only takes 3-5 seconds and the caps will be charged enough that that inrush of current will be subdued enough that the cable touching the terminal won't spark. Also the caps should hold that charge for long enough that you don't have to rush to swap out the resistive item and get the cable to the terminal. Well over a minute or more, so don't stress and start rushing. Keep it slow and safe.
@@CollinBaillie I've always made sure that they were turned off and have had never had one to spark.
Great video I like to comment about using the test light so you don't get the spark too late for me for that 1. Also no one addresses the hardwire terminal box which 1 is the positive neutral and ground on it ? When they use a black yellow and red wire all known to be hot wires
I bought one from ebay .doesnt work out of the box no ac out at all juck
Oh no!
Give it a year, a year and a half tops of continuous use, especially when powering inductive loads, and I can pretty much guarantee that you'll be sending this unit to a shop for repair. All high frequency, transformerless inverters on the market have a much higher, failure rate when compared to low frequency, transformer based inverters. The reason for this is that these cheap, lightweight inverters don't have an iron core, copper wound, iron core output transformer. And a 7,000 Watt surge capacity for a 3,500 Watt inverter is pretty wimpy when you consider that a low frequency inverter inverter offers a minimum surge capacity of 10,500 Watts. And you really ought to reconsider your claims about this product. This inverter is absolutely NOT certified for use with medical equipment. It's not even UL-1741 listed. If a patient is injured because of your recommendation that this inverter is suitable for use with medical equipment, you're probably going to find yourself in legal hot water.