Anker 737 Powerbank with Dell XPS 15 9520?

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  1. Posts : 331
    Windows 10
       #1

    Anker 737 Powerbank with Dell XPS 15 9520?


    Have a dell xps 15 9520 with specs of i7-12700h, 32gb ram, 1tb ssd, nvidia 3050. Old laptop was dell xps 15 9550 with specs of i5-6300hq, 32gb ram, 1tb ssd, nvidia 960m?



    I purchased a dell pw 7018 lc powerbank a while back for it. Reason is does usb-c charging which the 9520 does. Reason being I work online so if there is a power outage, I want power backup. Yes I know I have laptop battery backup but isn't that many hours. I normally use my dell xps 15 9520 plugged in with 2 external monitors but when power outage happens, well I have to only use my laptop.



    My previous laptop was a dell xps 15 9550 from years back. I had 2 dell pw7015l powerbanks that I used with it. I remember when there was a power outage, I would connect it to my laptop and I would get around 1 hour 45 minutes of battery on it before it went out. I then did that with my other same powerbank and get the same amount of backup usually so 3.5 hours with those 2 powerbanks. My old xps 15 9550 would give me maybe 2 hour of battery at the most but it was mostly 1 hour 30 minutes. So I had about 5 hours of backup battery.



    The thing here is when I tested using the new laptop during a power outage... the dell pw 7018 lc powerbank gave about 50 minutes before it went out. Then I would only have my laptop battery to work with until the power came back. So my question is why I only got 50 minutes of backup with it? Is it because the processor of the 9520 is much more powerful and power hungry than my old dell xps 15 9550 which had a i5-6300hq processor? So if I were to buy a cable that allowed me to use my old barrel pw 7015l powerbanks with the new dell laptop, it would still probably get 50 minutes of backup each? The only difference between the pw 7018lc and the pw7015l seems to be one is usb-c and the other is barrel only right? They both have 18000 mah?



    Now my question is if I buy the anker 737 powerbank which seem to have very good ratings... how long would I be able to charge it to my 9520 before it runs out of battery? Note I would be connecting it to my laptop the moment there is a power outage so battery would be full at the time? It certainly would be more than 50 minutes right? But it won't be say 2 hours or more? I read the mah isn't that much more than the dell pw7018lc? Note I will also be doing something on the laptop while it is charging. Also someone said that if you wait till your laptop has 0% battery... a powerbank would use up more battery charging it from 0% to whatever compared to you just connecting it immediately to your laptop at 100% when there is a power outage. Can anyone confirm this is true?



    Now could this even fully charge a dell xps laptop if say the battery is 0%? It matters a lot more if it's 0% and then you let it charge to 5% and then you continue using it while charging at the same time right? Anyone here have experience with the anker 737 and have a dell xps? Thank you.
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  2. Posts : 1,337
    Windows 10
       #2

    Run time on a UPS or power block will be defined by the power draw and the life time of the battery as the battery degrades over time and the power draw increases you get less hours.

    So its both of these factors potentially. Without having to look up those parts i would chalk it up to these two factors as that is basically it anyway.
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  3. Posts : 331
    Windows 10
    Thread Starter
       #3

    So the newer dell xps 15 9520 draws a lot more power than the old dell xps 15 9550 then right? The processor is i7-12700h compared to i5-6300hq.


    Also the mah of the powerbank for both the pw 7015l and the pw 7018lc is both 18000 mah right? Those few times I used the
    pw 7015l powerbank with the old 9550, it got close to 1 hour 45 minutes each. Now I only use it when I had to etc.



    But what about the anker 737 compared to the pw 7018lc?
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  4. Posts : 282
    Windows 10 Pro
       #4

    All of the power banks are rated 65 Wh.

    You have to do the math to figure out how long a battery backup will last based on the power consumtion of the device being powered by the battery backup.

    So here it is. Your current laptop (the XPS 15 9520) which comes in two models. One is a 90 watt unit and the other is a 130 watt unit. Source Since you indicated you only got about ~50 minutes of run time on the backup battery, that jives with the math since I figured if you had a 90 watt XPS 15 9520 the backup batter would last ~43 minutes. Here's the math. Your battery backup is capable of delivery 65 watt hours.

    Your laptop is apparently consuming 90 watts. 65 watt hours (battery backup) / 90 watts (laptop power consumption) = .72 This is the fraction of time or fraction of one hour because amp hours...

    Take .72 * 60 (minutes in an hour) = 43 minutes.

    So that battery backup you say is giving you about ~50 minutes is correct. The numbers on amp consumption are not precise. It's hard to get that finite unless you use specialized equipment and whatnot. Meaning there are variables. I'm only off by maybe ~7 minutes.


    About that Anker battery backup, without showing all the math, it looks like it'll only give you about 20 more minutes of run time versus the battery backup you use now. So 43 minutes + 20 minutes gives you about an hour of run time on the Anker battery backup based on what info. I have.

    Why such low numbers versus the other laptop? You said it yourself, it's more than likely the CPU and all that RAM and whatnot.

    You should be able to use this cable with the PW7015L battery to power the laptop via USB C. A Dell adapter is required to charge the backup battery though.

    You can't use any old USB C cable for power delivery and whatnot. The spec is stupid as sin where some USB C cables do this but not that. So you have to always buy the right cable. I honestly think the USB Implementers Forum is somehow in bed with manufactures to make this crap like this for marketing. Meaning you can charge this for this cable and that for that cable and all this crap. No way the USB Implementers Forum and manufacturers would allow just one simple standard of USB C cable and make it easier for us consumers, you know?

    Yeah, it makes sense that if your laptop battery already has some power left it would help offset the batter backup you would be using. But to know for sure I'd have to see how the circuitry works. Actually, I believe you should never let a lithium Ion battery get to 0%. And if you store them for long periods of time they should be at 60%. Though, there are at least four types of lithium ion batteries that I know of and each may be different... I think for the general consumer market only two are mostly used as of this post.


    Your laptop has two battery options. An 86 Wh 6 cell battery and a 56 Wh 3 cell battery. If you battery is a 6 cell, the Anker battery backup should be able to charge it once. I think... I'm not sure if a battery backup can be used to charge the laptop. If you have a 3 cell battery, then the Anker battery backup can charge the laptop one and a third times. So the first time up to 100% and the second time probably around 30%. Again, I don't know for sure if the backup battery can charge the laptop battery. It should as I see no reason why not. But it depends on the circuitry.


    i7 12700H power draw and specs.


    i5 6300HQ power draw and specs.

    Both CPUs consume the same wattage per say, but with the i7 it can jump up to 115 watts depending on what you're doing. The i7 also has a minimum assured power of 35 watts. So I imagine that's only if the computer is at idle or whatever.

    And now looking at your old laptop's specs (XPS 15 9550), my numbers don't make any sense. I just don't know what the real power consumption is for these laptops. If I knew that I could figure this out more clearly. But I'm probably right about the run time on the Anker backup battery. Compared with the Dell battery backups, you're only getting about a third more power. The prices are about the same between the Dell PW7018LC and the Anker from what I see on their respective websites...

    Here, sort from price lowest to cheapest. "PW7018LC" in All Categories - PicClick (I don't know the country you live in).
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  5. Posts : 6,647
    Windows 11 Pro - Windows 7 HP - Lubuntu
       #5

    A laptop has many power plans to be used. Normally when using the PS it is set as high power and when on battery it is set as low power consumption.
    When on battery, set the laptop to use a Power Plan that reduce the CPU clock, the screen brightness etc so it will reduce the power consumption.

    There are some UPS that allow to replace the small battery (65Wh) with a car battery (700Wh) that is 10 times more usable time.
    I've done it many years ago on a 1200VA APC.
    ups with car battery hack - Google Search
    Last edited by Megahertz; 09 Jul 2023 at 17:27.
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  6. Posts : 331
    Windows 10
    Thread Starter
       #6

    F22 Simpilot said:
    All of the power banks are rated 65 Wh.

    You have to do the math to figure out how long a battery backup will last based on the power consumtion of the device being powered by the battery backup.

    So here it is. Your current laptop (the XPS 15 9520) which comes in two models. One is a 90 watt unit and the other is a 130 watt unit. Source Since you indicated you only got about ~50 minutes of run time on the backup battery, that jives with the math since I figured if you had a 90 watt XPS 15 9520 the backup batter would last ~43 minutes. Here's the math. Your battery backup is capable of delivery 65 watt hours.

    Your laptop is apparently consuming 90 watts. 65 watt hours (battery backup) / 90 watts (laptop power consumption) = .72 This is the fraction of time or fraction of one hour because amp hours...

    Take .72 * 60 (minutes in an hour) = 43 minutes.

    So that battery backup you say is giving you about ~50 minutes is correct. The numbers on amp consumption are not precise. It's hard to get that finite unless you use specialized equipment and whatnot. Meaning there are variables. I'm only off by maybe ~7 minutes.


    About that Anker battery backup, without showing all the math, it looks like it'll only give you about 20 more minutes of run time versus the battery backup you use now. So 43 minutes + 20 minutes gives you about an hour of run time on the Anker battery backup based on what info. I have.

    Why such low numbers versus the other laptop? You said it yourself, it's more than likely the CPU and all that RAM and whatnot.

    You should be able to use this cable with the PW7015L battery to power the laptop via USB C. A Dell adapter is required to charge the backup battery though.

    You can't use any old USB C cable for power delivery and whatnot. The spec is stupid as sin where some USB C cables do this but not that. So you have to always buy the right cable. I honestly think the USB Implementers Forum is somehow in bed with manufactures to make this crap like this for marketing. Meaning you can charge this for this cable and that for that cable and all this crap. No way the USB Implementers Forum and manufacturers would allow just one simple standard of USB C cable and make it easier for us consumers, you know?

    Yeah, it makes sense that if your laptop battery already has some power left it would help offset the batter backup you would be using. But to know for sure I'd have to see how the circuitry works. Actually, I believe you should never let a lithium Ion battery get to 0%. And if you store them for long periods of time they should be at 60%. Though, there are at least four types of lithium ion batteries that I know of and each may be different... I think for the general consumer market only two are mostly used as of this post.


    Your laptop has two battery options. An 86 Wh 6 cell battery and a 56 Wh 3 cell battery. If you battery is a 6 cell, the Anker battery backup should be able to charge it once. I think... I'm not sure if a battery backup can be used to charge the laptop. If you have a 3 cell battery, then the Anker battery backup can charge the laptop one and a third times. So the first time up to 100% and the second time probably around 30%. Again, I don't know for sure if the backup battery can charge the laptop battery. It should as I see no reason why not. But it depends on the circuitry.


    i7 12700H power draw and specs.


    i5 6300HQ power draw and specs.

    Both CPUs consume the same wattage per say, but with the i7 it can jump up to 115 watts depending on what you're doing. The i7 also has a minimum assured power of 35 watts. So I imagine that's only if the computer is at idle or whatever.

    And now looking at your old laptop's specs (XPS 15 9550), my numbers don't make any sense. I just don't know what the real power consumption is for these laptops. If I knew that I could figure this out more clearly. But I'm probably right about the run time on the Anker backup battery. Compared with the Dell battery backups, you're only getting about a third more power. The prices are about the same between the Dell PW7018LC and the Anker from what I see on their respective websites...

    Here, sort from price lowest to cheapest. "PW7018LC" in All Categories - PicClick (I don't know the country you live in).

    Thank you for the very long reply.


    The anker powerbank is rated 140 Wh isn't it? It isn't 65 Wh? However I read that using any non Dell powerbank with a dell laptop, you can only get max 90 Wh. Have you heard of this? So it would be either 65 Wh or 90 Wh right with the newer xps 9520?


    How do you know the xps 9520 comes in 2 models? And do you mean by that? The charger that comes with the xps 9520 is a 130Wh charger. But that doesn't have anything to do with the 90 watt consumption right? Also... my older xps 9550 also is a 130 Wh charger. Of course the difference between the xps 9520 and xps 9550 charger is that one is connected via usb-c... the older laptop is connected via barrel. Does that make sense?


    So based on that... does it sound right the xps 9520 with the dell pw 7018 lc powerbank last about 50 minutes or so? The thing is it is drawing watts 65 watts so 50 minutes is accurate? You said 43 minutes but that is assuming it was drawing 90 watts? Using the dell powerbank with the xps 9520 while drawing 65 watts means it would last around 50 minutes or less? Does the watts... laptop consumption number change every second or minute?


    Okay so the anker 737 has how much mah compared to the dell pw 7018lc? So it would give maybe 1 hour 10 minutes? That doesn't seem much at all with the way it is described. So basically if the xpsw 9520 had 0% battery, it might charge the xps 9520 to maybe 40% at best or something?


    Well the processor of this laptop is i7-12700h so it is a power hungry processor. The ram is 32gb but I don't think it has anything to do with that. Reason is because my older xps 9550 had 32gb as well and with the dell pw 7015l barrel powerbank... I got close to 1 hour 45 minutes. Also... the video card of the older laptop was an old nvidia 960m compared to the xps 9520 with the nvidia 3050. But does that make much of a difference?


    I also remember using the newer xps 9520 with the pw7018 lc powerbank and using it while not using the nvidia 3050... it was only using the intel xe graphics card... and the backup was about 50 minutes. Is that surprising? I would thought when not using the 3050... it would last longer? But it didn't.


    The dell adapter link you posted, yes I saw that a while back. However, it wasn't available on dell site. I could have purchased that and then used my 2 old pw7015l powerbanks with the newer xps 9520 right? Someone had told me it should work but not 100%.
    So because of that, I ended up buying the pw7018lc powerbank which uses usb-c since that is compatible with the newer xps 9520.


    My xps 9520 has the 86 Wh 6 cell battery. My old xps 9550, I had upgraded the battery from 56 Wh 3 cell to 86 Wh 6 cell. You really think the anker 737 would charge my xps 9520 once? I have a tough time believing that because since say the xps 9520 has 5% battery left... if I charge the anker 737 to it... wouldn't it only charge 1 hour 10 minutes max before it goes off based on the numbers you provided earlier? And not only that... the lower battery it is... the more battery it uses up compared to if say the xps 9520 was full battery when plug in the anker? So wouldn't it probably charge up to 50% at the most? The thing is I read online in reviews how people say it can charge their laptop 1.5 times or even 2 times but those laptops are probably very low U processors right?



    Yea the i7-12700h definitely draws more power than the i5-6300hq. You can the i7 can go up to 115 watts depending on what you are doing. So the watts change every second or minute? It could be 115 watts now... but seconds later be only 35 watts? So 35 watts is only if the laptop is idle? When I tested the xps 9520 with the pw 7018 lc and got 50 minutes of backup on it before it went off... this was when I was doing something and not idle. But if idle... it should be much more than 50 minutes? I can do that test later.



    Yea the thing is with the xps 15 9550, when I used my old pw 7015l powerbank with it when there is a power outage, I got close to 1 hour 45 minutes before it goes out. So since I had 2 of them, I could get 3.5 hours of battery backup. Compare that with the newer xps 9520 with the pw 7018 lc powerbank... I got only 50 minutes. That is like half which is a lot don't you agree?


    I purchased the dell pw7018lc as oppose to the anker 737 back then because I wasn't 100% sure if the anker 737 was compatible with the newer xps 9520.


    I'm from the US but outside of the US almost all the time. So I only buy the products usually when in the US.
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  7. Posts : 331
    Windows 10
    Thread Starter
       #7

    Is the information I mention above correct? I mean... that seem ridiculous a big powerbank like the anker 737 would only give 1 hour 10 minutes before it goes out.
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  8. Posts : 6,647
    Windows 11 Pro - Windows 7 HP - Lubuntu
       #8

    The powerbank like replaces the AC power supply so the computer doesn't know it is working on battery and it doesn't change the power plan according.
    Once you put the powerbank you must change the power plan to battery mode.
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  9. Posts : 331
    Windows 10
    Thread Starter
       #9

    So does this mean the anker 737 probably give me 1 hour 10 minutes of battery before it goes out? This is assuming I'm using my laptop while plugged in and then power outage, then I connect the anker 737 powerbank to my laptop until it goes out.


    So I'm only getting 1 hour 10 minutes only?


    So the people that say it could recharge their laptop more than 1 time has those u processors then right?

    - - - Updated - - -

    Anyone with the anker 737?
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  10. Posts : 282
    Windows 10 Pro
       #10

    THe AnNoYeD said:
    About that Anker battery backup, without showing all the math, it looks like it'll only give you about 20 more minutes of run time versus the battery backup you use now. So 43 minutes + 20 minutes gives you about an hour of run time on the Anker battery backup based on what info. I have.
    ...lean NOT on your own understanding.
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