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RAVPower Pioneer Series 20000mAh 60W PD USB-C Power Bank w/ Quick Charge EXPIRED

$33.70
$53.99
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Sunvalley Brands via Amazon has RAVPower Pioneer Series 20000mAh 60W PD Portable Charger USB-C Power Bank w/ Quick Charge for $33.71 when you 'clip' the $3 off coupon located on the product page and apply promotion code 20G925RV at checkout. Shipping is free. Thanks Bgunn925 & slow_hachiroku

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Editor's Notes & Price Research

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Edited January 29, 2020 at 01:43 PM by
I bought this yesterday for $53, then checked back today to see it had dropped by ~$8, plus an additional $3 off instant coupon.


https://www.amazon.com/Portable-R...7N9&sr=8-4

https://www.amazon.com/Portable-R...amp;sr=8-4
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Its $33.71 before tax after clipping $3 coupon and adding code 20G925RV at checkout.

In 4 1, lowest I have seen for reputable 60w out/30w in power bank, thanks OP!!
18 Helpful?
Math:

1 Watt = 1 Amp x 1 Volt
1 Amp of current draw for 1 hour = 1Ah (amp hour)
1000 mAh (milliamp hours) = 1Ah (amp hour)

LiPo batteries are nominally 3.74V for capacity calculations (max charge is between 4.2V and 4.3V, but they will drift down to 3.3-3.4V before they must be recharged)

If you know Then multiply by To get
mAh 0.00374 Wh
Ah 3.74 Wh
Wh 267 mAh
Wh 0.267 Ah


Practically speaking, you should only use 80% of the battery rating to determine the amount of recharge you can get due to losses in charging and conversion, so this 20,000mAh battery will only result in 16,000mAh of charge into your laptop, or about 60Wh worth of real-world charging.

Edit: Sorry for the Code block; I'm not sure how to do tables. Also, LOL that sehlceris and I cross posted.
13 Helpful?
Found on a website:
Multiply voltage (3.7 or 3.6, I don't know which, but it won't change the math by much) by aH (this bank has 20000 milliamp hours, so divide that by 1000 to get 20 aH)

3.6v * 20aH = 72Wh

However, you should multiply the Wh of this bank by 0.7 to account for power transfer inefficiency and also the possibility that ravpower is inflating their numbers a bit.

So 72Wh * 0.7 = 50.4 Wh.

I'd guess that you can charge half your laptop's battery. Your laptop battery is abnormally giant, by the way.
9 Helpful?

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#3
This must be really new, since I've been periodically checking Amazon for any name brand, reasonably priced portable charger with a 60W output for my laptop.
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#4
This is the lowest price I've seen for a 60w 20a battery I've seen, though I am wary because ravpower is constantly shilled around here and is known for having fake reviews and shady business practices.

Do others think it's a good deal?
Reply Helpful Comment? 3 4
Last edited by sehlceris January 29, 2020 at 11:23 AM.
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#5
This charger received an F grade on Fakespot
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#6
Ravpower is good to go, on par with Anker, from my experience using their chargers and cables.

This is one of the very few portable banks with high capacity (20k mah) and high wattage USB-C PD (60w). The Anker that hit FP yesterday was 20k mah but only 18w PD, which won't charge any laptop.
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#7
The good news is that it's 60W output, the bad news is that the charging input is only 30W max, so it takes 3 hours to recharge and it doesn't come with a charger.
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#8
How do you do the math and find out how many charges can this unit charge a laptop with a 97 WHr battery?
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#9
Quote from Daskid
:
How do you do the math and find out how many charges can this unit charge a laptop with a 97 WHr battery?
Depends on the laptop and battery, but a rough estimate is 8900 mah.
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#10
Quote from Daskid
:
How do you do the math and find out how many charges can this unit charge a laptop with a 97 WHr battery?
Found on a website:
Multiply voltage (3.7 or 3.6, I don't know which, but it won't change the math by much) by aH (this bank has 20000 milliamp hours, so divide that by 1000 to get 20 aH)

3.6v * 20aH = 72Wh

However, you should multiply the Wh of this bank by 0.7 to account for power transfer inefficiency and also the possibility that ravpower is inflating their numbers a bit.

So 72Wh * 0.7 = 50.4 Wh.

I'd guess that you can charge half your laptop's battery. Your laptop battery is abnormally giant, by the way.
Reply Helpful Comment? 11 2
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#11
Quote from Daskid
:
How do you do the math and find out how many charges can this unit charge a laptop with a 97 WHr battery?
Math:

1 Watt = 1 Amp x 1 Volt
1 Amp of current draw for 1 hour = 1Ah (amp hour)
1000 mAh (milliamp hours) = 1Ah (amp hour)

LiPo batteries are nominally 3.74V for capacity calculations (max charge is between 4.2V and 4.3V, but they will drift down to 3.3-3.4V before they must be recharged)

Code:
If you know     Then multiply by    To get 
mAh              0.00374              Wh
 Ah              3.74                 Wh
 Wh              267                  mAh
 Wh              0.267                Ah

Practically speaking, you should only use 80% of the battery rating to determine the amount of recharge you can get due to losses in charging and conversion, so this 20,000mAh battery will only result in 16,000mAh of charge into your laptop, or about 60Wh worth of real-world charging.

Edit: Sorry for the Code block; I'm not sure how to do tables. Also, LOL that sehlceris and I cross posted.
Reply Helpful Comment? 13 0
Last edited by overzeetop January 29, 2020 at 11:45 AM.
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#12
Quote from overzeetop
:
Also, LOL that sehlceris and I cross posted.
Yay electricity! Lol. For some reason I get a kick out of doing these calculations. Nice that we have an optimistic and pessimistic estimate now!
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#13
Quote from sehlceris
:
Found on a website:
Multiply voltage (3.7 or 3.6, I don't know which, but it won't change the math by much) by aH (this bank has 20000 milliamp hours, so divide that by 1000 to get 20 aH)

3.6v * 20aH = 72Wh

However, you should multiply the Wh of this bank by 0.7 to account for power transfer inefficiency and also the possibility that ravpower is inflating their numbers a bit.

So 72Wh * 0.7 = 50.4 Wh.

I'd guess that you can charge half your laptop's battery. Your laptop battery is abnormally giant, by the way.
Thanks! My laptop is the old XPS 9560 with 97 WHr battery. Not really depleting the battery down to 0%, but your calculations make it a good gauge to anyone who has the same question I did. Thanks!
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#14
Quote from overzeetop
:
Math:

1 Watt = 1 Amp x 1 Volt
1 Amp of current draw for 1 hour = 1Ah (amp hour)
1000 mAh (milliamp hours) = 1Ah (amp hour)

LiPo batteries are nominally 3.74V for capacity calculations (max charge is between 4.2V and 4.3V, but they will drift down to 3.3-3.4V before they must be recharged)

Code:
If you know     Then multiply by    To get 
mAh              0.00374              Wh
 Ah              3.74                 Wh
 Wh              267                  mAh
 Wh              0.267                Ah

Practically speaking, you should only use 80% of the battery rating to determine the amount of recharge you can get due to losses in charging and conversion, so this 20,000mAh battery will only result in 16,000mAh of charge into your laptop, or about 60Wh worth of real-world charging.

Edit: Sorry for the Code block; I'm not sure how to do tables. Also, LOL that sehlceris and I cross posted.
Thanks as well!
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#15
I actually bought this when it was like 50 bucks. I like it, pretty portable. Literally just a power bank and a usb-c cable. You need to buy a good adapter to charge it at 30w. So there's your extra cost.
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