Imars 135W 19V Portable Folding Solar Panel for US$79.99 (~A$110.24) Delivered (AU Stock) @ Banggood AU

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AAA-A on 22/04/2022 - 08:44 au.banggood.com (300 clicks)
Last edited 22/04/2022 - 10:18 by 1 other user

BG5d1832

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iMars SP-B135 135W 19V Folding Portable Solar Panel for $US79.99 or ~$AUD110.24 Delivered from an Australian Warehouse after coupon: BG5d1832

Features:

1. 135W High Power.
2. Superior Monocrystalline Solar Cells.
3. 21% High Conversion Efficiency.
4. Waterproof PET Panel: High temperature resistant, dustproof and waterproof, easy to cope with all kinds of harsh environment.
5. DC & USB 4 Output Ports: Meet the needs of different devices.
6. Foldable & Portable: Can be folded into a briefcase and easy to take out everywhere.
7. Built-in Quick Connector: Can be connected in series or parallel.
8. Suitable for Laptop, Car Battery, Portable Power Station, Cellphone, Power Bank and Tablet, etc.

Specifications:

Model: SP-B135
Name: Foldable Solar Panel
Power: 135W
DC Output: 23.6V/5.7A±5% (VOC/ISC)
USB-C PD3.0 Output:19V/3A, 12V/5A, 9V/2A, 5V/2A
USB QC3.0 Output: 5V/3.4A
USB Output: 5V/2A

Expanded size: 936 * 555mm
Folded size: 470 * 560mm
Weight: 3kg

100W model also available for $US69.99 or $AUD$96.46 after coupon BG9963c0

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• 

  Lolitsjoel on 22/04/2022 - 09:05

  +7

  Again another undersized, over estimated panel wattage. this is probably just over 80w

  • 

    RecklessMonkeys on 22/04/2022 - 09:30

    Are there any independent assessments of what various solar panels are actually generating?

    • 

      DonWilson on 22/04/2022 - 09:58

      +1

      Some but it's unlikely you'll find someone properly testing the vast majority of stuff on the market.

      But yeah, 200W per square meter is about the best you can expect with the type of panels available to cheap "brands". This thing is 0.52m^2 including the frame and handle. Most likely under 100W, 80W a real possibility.

    • 

      foursure on 22/04/2022 - 11:24

      +3

      A good estimate I use is to multiply the panel surface area by their 'proposed' efficiency.

      In this case 0.936m * 0.555m = 0.519m2 (actual panel area will be less than this)

      0.519m2 * 21% = 0.108 => 108W

      However, 21% is unlikely given the cost of the panel, it's efficiency is more likely ~17% which calculates to 88W…

      It's not exact, but helps filter out the obvious junk.

      • 

        Dr Ginger on 22/04/2022 - 12:00

        +1

        Looks like a 1 star review on the site backs you up

        The solar panel only has a maximum output power of 90W and not 135W as stated. The total area of the two halves of the solar panel is 2 x 520mm x 417mm, which results in 0.43m² and thus a maximum output power of 90W with an efficiency of 21%: Pmax=1000W/m² x 0.43m² x 0.21=90W

    • 

      RecklessMonkeys on 22/04/2022 - 15:24

      Thanks fellas for your responses. Food for thought.

  • 

    willyroo on 22/04/2022 - 12:19

    +1

    Yep, bought some "250W" lightweight panels cheap on eBay, knowing they'd struggle to get much more than 150W - at 150W was happy with the W/$.

    Plugged into the Victron on a lovely sunny day in Brisbane, and peak was 152 watts.

    Reference was a set of 2015 vintage Sunyee 160W panels - peak exactly the same at 152 watts.

    • 

      RecklessMonkeys on 22/04/2022 - 15:27

      There are panels advertised as 300W which have zero chance of being so. Still, I'm curious to know what they actually hit.

• 

  muralimailbox on 22/04/2022 - 15:21

  -3

  I don't trust bangood it's a scam website. I had got a different product altogether couple of times they are one of the fake site.

  • 

    chamer911 on 22/04/2022 - 19:56

    +2

    I've bought sooo many electronics and drone parts off them, even had a warranty return with them that I was really surprised about.

    Just a different experience :)

    • 

      DonWilson on 22/04/2022 - 22:00

      +1

      Ditto. Bought thousands of dollars of stuff over the last decade. They aren't new, the aren't a scam. Is it possible to have a bad consumer experience? Hell yeah. But not worse than any other China shippper, hell, slightly better than most.

      • 

        xoom on 23/04/2022 - 08:53

        +1

        Same. Bought heaps from banggood. Sure it took time to get the goods but it all got to me. Eventually.

• 

  k0ka2 on 26/04/2022 - 20:53

  +2

  For those keen on this, there is a time limited (72 hours) half price promotion on these using coupons on this Banggood page. eg. this SP-B135 around AU$68 delivered (AU stock).