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Portable Power Stations - Actual Capacity?

Discussion in 'Outdoors' started by I_squared_r, Dec 10, 2020.

  1. Dec 10, 2020 at 6:20 AM
    #1
    I_squared_r

    I_squared_r [OP] Well-Known Member

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    Hi all. I have a Rockpals 520wh station and i've been testing it. It seems to me that the actual capacity is 67% of their listed .. somewhere around 350wh.

    I'm running a Iceco JP40 fridge at 39F and I got 29 hours with it.

    Power draw is 35w on eco mode. 3w at idle. Estimating a duty cycle of 33%. (35w)x(.33)=12w (rounded up). (12w)x(29hours)=350wh

    Ok. That's less than advertised. So I charge the station with my watt meter connected and it reads 350wh after a full charge. But also impressed that my estimate was spot on lol

    Right now I am running the fridge again on the station's AC power and its like 60% discharged and my watt meter reads 150wh.

    My brother says these capacities are always over estimated. Is this true? Or should I warranty it?
     
  2. Dec 10, 2020 at 7:14 PM
    #2
    BalutTaco

    BalutTaco Moja_Przygoda

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    Idk. But i'll give you a free bump!
     
    I_squared_r[OP] likes this.
  3. Dec 10, 2020 at 7:54 PM
    #3
    I_squared_r

    I_squared_r [OP] Well-Known Member

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    I set the temperature higher from the initial.

    1st run:
    DC power, 30F, 29 hours

    charged it up 0.35kwh

    2nd run:
    AC power, 39F, 31 hours.. it still had a little charge left
    measured 0.29kwh draw with meter

    I found videos on youtube of people testing jackery 500 and getting ALOT more time than this crap. I'm going to try warrantying it. If that doesn't work, then i'll try for a refund and get a jackery..
     
  4. Dec 10, 2020 at 7:59 PM
    #4
    BalutTaco

    BalutTaco Moja_Przygoda

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    I say refund it! Seem a lot of people are happy about the jackery, plus they have a 15% sale atm!
     
  5. Dec 10, 2020 at 8:05 PM
    #5
    I_squared_r

    I_squared_r [OP] Well-Known Member

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    I just emailed them asking for a refund. Looks like I got fooled by the youtube reviews! Probably all fake reviews sponsored by the company.
     
  6. Dec 10, 2020 at 8:08 PM
    #6
    I_squared_r

    I_squared_r [OP] Well-Known Member

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    Also, no pass through charging. This means that I can't plug in a solar panel and run the fridge off the AC power. No worries, there's DC power, but wait, the DC power automatically shuts off after 6 hours!
     
  7. Dec 13, 2020 at 1:38 AM
    #7
    texas angler

    texas angler Well-Known Member

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    Get you a jackery and call it a day. Mine 500 runs my jp50 on DC and have nothing but great experience with this setup.
     
  8. Jan 13, 2021 at 6:24 AM
    #8
    I_squared_r

    I_squared_r [OP] Well-Known Member

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    An update: I wouldn't recommend Rockpals to anyone. Their customer service is non-existent and they don't make an attempt to speak english or provide technical support. Their technical support says "send picture", but its impossible to send picture of the power station shutting off after 6 hours. So I asked for a refund for their broken power station. After 3 days of pestering they send me a prepaid return label. I send it back and then I realize 3 weeks have passed without a refund. I email them and they send my refund minus $30. I said "hey, you said that you would give me a full refund for your power station that doesnt work right". They ignored my email. I will dispute the transaction through my credit card company.
     

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