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forum threadt0mmyr posted Yesterday 03:29 PM
forum threadt0mmyr posted Yesterday 03:29 PM

UDPOWER C400 Portable Power Station (256Wh, 400W) $105 Shipped

$105

$210

50% off
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Came across this and it actually looks like a pretty decent little power station if you stack the code. It drops from $169.99 down to around ~$105, which feels pretty low for a 256Wh unit with LiFePO4.

It's rated at 400W (800W surge), so more for smaller stuff like laptops, routers, maybe a mini fridge or CPAP. The battery is LFP with 4000+ cycles which is nice since most cheaper ones in this range still use regular Li-ion. Charging speed also looks fast for the size, they claim about 0–80% in ~1.5 hours if you use both inputs.

One thing that stood out is it also has a built-in jump starter (400A peak), which is kinda random but actually useful if you keep it in the car. Otherwise it's the usual ports setup with AC, USB-C, USB-A, car port, etc. Supports solar too if you're into that.

Weight is around 6.3 lbs so pretty easy to throw in a bag or keep in the trunk. Says it's quieter than most, not sure how true that is but these small units are usually fine anyway.

At around ~$100 after code, feels like a solid option if you just want something simple for backup or travel without spending $300+.

code RUD69

https://udpwr.com/products/udpowe...0794755262
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About the Poster
Came across this and it actually looks like a pretty decent little power station if you stack the code. It drops from $169.99 down to around ~$105, which feels pretty low for a 256Wh unit with LiFePO4.

It's rated at 400W (800W surge), so more for smaller stuff like laptops, routers, maybe a mini fridge or CPAP. The battery is LFP with 4000+ cycles which is nice since most cheaper ones in this range still use regular Li-ion. Charging speed also looks fast for the size, they claim about 0–80% in ~1.5 hours if you use both inputs.

One thing that stood out is it also has a built-in jump starter (400A peak), which is kinda random but actually useful if you keep it in the car. Otherwise it's the usual ports setup with AC, USB-C, USB-A, car port, etc. Supports solar too if you're into that.

Weight is around 6.3 lbs so pretty easy to throw in a bag or keep in the trunk. Says it's quieter than most, not sure how true that is but these small units are usually fine anyway.

At around ~$100 after code, feels like a solid option if you just want something simple for backup or travel without spending $300+.

code RUD69

https://udpwr.com/products/udpowe...0794755262

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Yesterday 03:39 PM
292 Posts
Joined Jul 2007
don602Yesterday 03:39 PM
292 Posts
Question - How many hours will the run a 20-watt fan? (part to a wall-mounted propane heater ). 400/20=20 hours??? Thanks
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Yesterday 03:46 PM
148 Posts
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PupperScupper
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Yesterday 03:46 PM
148 Posts
Delivery date is May 28th.
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Yesterday 03:52 PM
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Joined Oct 2011
blarneyrubble
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Yesterday 03:52 PM
160 Posts
Quote from don602 :
Question - How many hours will the run a 20-watt fan? (part to a wall-mounted propane heater ). 400/20=20 hours??? Thanks
256/20=12.8-the power consumption on the unit itself.
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Yesterday 03:58 PM
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Joined Dec 2019
golfreakYesterday 03:58 PM
1,035 Posts
$105 is a pretty good deal.
A lot of the power station in this size is 300w/~280wh.
This one is 400w so that extra 100w will come in handy at times.
I have a few power stations this size at 300w and at times, I needed just a little more power.
600w would be a great but we're talking about $100 here.
That jump starter is a huge bonus.
This is something you can leave the in the car permanently.
Last edited by golfreak April 28, 2026 at 09:02 AM.
Yesterday 03:58 PM
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Joined Nov 2018
FeistyAppliance7297Yesterday 03:58 PM
7 Posts
tyyyyy
Yesterday 04:00 PM
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Joined Dec 2019
golfreakYesterday 04:00 PM
1,035 Posts
Quote from blarneyrubble :
256/20=12.8-the power consumption on the unit itself.
Let's add in the loss of inverter efficiency.
Most the the smaller power station efficiency is 80-85%.
256*80 = 218/20. Say around 10 hrs give or take.
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Today 12:02 AM
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WoodSlayR
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Today 12:02 AM
1,355 Posts
Quote from don602 :
Question - How many hours will the run a 20-watt fan? (part to a wall-mounted propane heater ). 400/20=20 hours??? Thanks
I'd highly recommend spending $200 dollars more and get something with 500% more capacity & nearly 4 times more inverter output at 1488Wh & 1500 watts. Like the OUPES Exodus 1500 on sale for $305. It also comes with a 6 year warrantee. On top of all that, it's also 33% cheaper per Wh at 20 cents vs 31 cents for this unit. In real world usage, It would run your fan continuously for over 63 hours calculating at 85% efficiency or 1190 useable Wh out of 1488 total.
https://slickdeals.net/f/19409346-oupes-exodus-1500-portable-power-station-1500w-1488wh-303?src=SDSearchv3&attrsrc=Thread%3AExpired%3AFalse%7CSearch%3AType%3Aac_keyword%7CSearch%3ASort%3Arelevance%7CSearch%3AHideExpired%3Afalse
Last edited by WoodSlayR April 28, 2026 at 05:08 PM.

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Today 12:19 AM
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WoodSlayR
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Today 12:19 AM
1,355 Posts
Quote from golfreak :
$105 is a pretty good deal.
A lot of the power station in this size is 300w/~280wh.
This one is 400w so that extra 100w will come in handy at times.
I have a few power stations this size at 300w and at times, I needed just a little more power.
600w would be a great but we're talking about $100 here.
That jump starter is a huge bonus.
This is something you can leave the in the car permanently.
You probably don't want to leave them in your car if you live somewhere that has long cold winters. LFP is best stored above freezing temps, so 32F or above, but its recommended to store them even warmer than that if you plan on storing them long term. Anything more than 3 months would be considered long term.
Last edited by WoodSlayR April 28, 2026 at 05:22 PM.

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