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Bestek 300W Pure Sine Wave Power Inverter Car Adapter (DC 12V-AC 110V) EXPIRED

$32
$41.99
+ Free S/H
+49 Deal Score
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Bestek via Amazon.com has Bestek 300W Pure Sine Wave Power Inverter Car Adapter (DC 12V to AC 110V w/ 4.2A Dual Smart USB Ports) on sale for $41.99 - Extra $10 Off w/ promo code VU4WYUTP (apply at checkout) = $31.99. Shipping is free (select in delivery option). Thanks noahbalboah

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  • Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
  • If you're not a student, there's also a free 1-Month Amazon Prime trial available.
  • This power inverter offers continuous DC to Ac power and 700W of peak power w/ 2 AC outlets/USB charging port. Great for powering laptops, speakers, camera, game consoles & more. Provides sine wave output which is more stable and can be applied to many devices. - Discombobulated

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Edited August 26, 2019 at 06:00 PM by
Bestek via Amazon has 300Watt Pure Sine Wave Power Inverter [amazon.com] for $31.99 w/ coupon code VU4WYUTP. Shipping is free.
Here is a really nice overview of this power inverter: https://www.youtube.com/watch?v=ZHmAGaxGID8
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I don't get their marketing claims. You aren't going to get 300W off your cigarette lighter in the first place. Since "lighter" sockets never have lighters in them anymore they are usually fused at 10amps. Sometimes 15 amps if your are lucky.

That means if your are lucky you will get 120-180Watts of power out of your cigarette lighter before fuses blow. So have no clue why they are selling a 300W unit that doesn't have alligator clips on it and only plugs into a cigarette lighter as most anything over 150W needs to connect to the battery.

Also have no clue where they are getting their 700W peak output claim from. There is no way they could be pulling 50 amps through that small DC power cord and no cigarette lighter is rated for that anyway. I think they are getting a little bit liberal with their math.
54 Helpful?
Absolutely correct. Here is an example of a "real" 300W sine inverter:
https://www.amazon.com/Morningstar-SI-300-115-Morningstar-SI-300-115V-UL/dp/B007IAFN16/ref=pd_rhf_dp... [amazon.com]
It takes a fairly heavy cable connected directly to the 12V battery for auto use.
15 Helpful?
It's in the description that it's only 150watt through the cig plug.. Anything above 150watt needs an adapter with alligator clips.

700watt peak is too high of a claim.

For 360watt max rms, the peak is around 510watt.

The rms is the useable number. Peak is the number use to calculate the RMS value and company use it for marketing. Peak x .707 = RMS .

In this case, 300watt is the rated RMS means continuous output. 360watt is the spike draw. Therefore, the true peak value is 424watt.

Does not matter if it 700watt or 424watt peak. None of those number applies to you at the output. The most important number is 300watt.

Even that is false advertise. Like you mention, you cant draw more 150watt without an adapter, which is not included.
9 Helpful?

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#3
Reviews are pretty good for this unit. Does anyone have a good usage scenario for this? I like the idea of having 110v available in the car but have no idea what would be good use case.
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#4
Quote from MaGNuM
:
Reviews are pretty good for this unit. Does anyone have a good usage scenario for this? I like the idea of having 110v available in the car but have no idea what would be good use case.
I use it mainly for laptop and small electronics that normally don't have DC Car unit. Nice to have the option but not a everyday item.
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#5
Seems like a good solution for when AC power isn't available and the health of your electronic devices is worth more than $31 ....
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#6
Quote from MaGNuM
:
Reviews are pretty good for this unit. Does anyone have a good usage scenario for this? I like the idea of having 110v available in the car but have no idea what would be good use case.
Could be very useful at home during a power outage. Run an extension cord from this device in your car to inside your house. While it won't power your refrigerator, powering your modem/router would be nice. It'll even power a reasonably big LED TV. 600 watts might even be enough for some small microwave ovens.
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#7
I don't get their marketing claims. You aren't going to get 300W off your cigarette lighter in the first place. Since "lighter" sockets never have lighters in them anymore they are usually fused at 10amps. Sometimes 15 amps if your are lucky.

That means if your are lucky you will get 120-180Watts of power out of your cigarette lighter before fuses blow. So have no clue why they are selling a 300W unit that doesn't have alligator clips on it and only plugs into a cigarette lighter as most anything over 150W needs to connect to the battery.

Also have no clue where they are getting their 700W peak output claim from. There is no way they could be pulling 50 amps through that small DC power cord and no cigarette lighter is rated for that anyway. I think they are getting a little bit liberal with their math.
Reply Helpful Comment? 59 5
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#8
OP were did you get the coupon code from?

Do you know/are the seller?
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#9
Quote from dazedxxx
:
OP were did you get the coupon code from?

Do you know/are the seller?
Found it on an Amazon deals Facebook page. I am unfortunately not the seller nor do I know them.
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#10
Quote from joe000
:
Could be very useful at home during a power outage. Run an extension cord from this device in your car to inside your house. While it won't power your refrigerator, powering your modem/router would be nice. It'll even power a reasonably big LED TV. 600 watts might even be enough for some small microwave ovens.
Great idea on powering a modem, never thought of that!
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#11
Quote from BigToys4BigBoys
:
I don't get their marketing claims. You aren't going to get 300W off your cigarette lighter in the first place. Since "lighter" sockets never have lighters in them anymore they are usually fused at 10amps. Sometimes 15 amps if your are lucky.

That means if your are lucky you will get 120-180Watts of power out of your cigarette lighter before fuses blow. So have no clue why they are selling a 300W unit that doesn't have alligator clips on it and only plugs into a cigarette lighter as most anything over 150W needs to connect to the battery.

Also have no clue where they are getting their 700W peak output claim from. There is no way they could be pulling 50 amps through that small DC power cord and no cigarette lighter is rated for that anyway. I think they are getting a little bit liberal with their math.
Absolutely correct. Here is an example of a "real" 300W sine inverter:
https://www.amazon.com/Morningstar-SI-300-115-Morningstar-SI-300-115V-UL/dp/B007IAFN16/ref=pd_rhf_dp... [amazon.com]
It takes a fairly heavy cable connected directly to the 12V battery for auto use.
Reply Helpful Comment? 16 1
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#12
Quote from BigToys4BigBoys
:
I don't get their marketing claims. You aren't going to get 300W off your cigarette lighter in the first place. Since "lighter" sockets never have lighters in them anymore they are usually fused at 10amps. Sometimes 15 amps if your are lucky.

That means if your are lucky you will get 120-180Watts of power out of your cigarette lighter before fuses blow. So have no clue why they are selling a 300W unit that doesn't have alligator clips on it and only plugs into a cigarette lighter as most anything over 150W needs to connect to the battery.

Also have no clue where they are getting their 700W peak output claim from. There is no way they could be pulling 50 amps through that small DC power cord and no cigarette lighter is rated for that anyway. I think they are getting a little bit liberal with their math.
It's in the description that it's only 150watt through the cig plug.. Anything above 150watt needs an adapter with alligator clips.

700watt peak is too high of a claim.

For 360watt max rms, the peak is around 510watt.

The rms is the useable number. Peak is the number use to calculate the RMS value and company use it for marketing. Peak x .707 = RMS .

In this case, 300watt is the rated RMS means continuous output. 360watt is the spike draw. Therefore, the true peak value is 424watt.

Does not matter if it 700watt or 424watt peak. None of those number applies to you at the output. The most important number is 300watt.

Even that is false advertise. Like you mention, you cant draw more 150watt without an adapter, which is not included.
Reply Helpful Comment? 10 1
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#13
Quote from BigToys4BigBoys
:
I don't get their marketing claims. You aren't going to get 300W off your cigarette lighter in the first place. Since "lighter" sockets never have lighters in them anymore they are usually fused at 10amps. Sometimes 15 amps if your are lucky.

That means if your are lucky you will get 120-180Watts of power out of your cigarette lighter before fuses blow. So have no clue why they are selling a 300W unit that doesn't have alligator clips on it and only plugs into a cigarette lighter as most anything over 150W needs to connect to the battery.

Also have no clue where they are getting their 700W peak output claim from. There is no way they could be pulling 50 amps through that small DC power cord and no cigarette lighter is rated for that anyway. I think they are getting a little bit liberal with their math.
This is why any decent one of these also comes with battery clamps (even the cheaper ones usually do).
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#14
worked a few times for me then it took a crap.
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#15
Bought them as gifts for Christmas for all my friends. We enjoy going mudding together
Reply Helpful Comment? 0 1
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