Hello guys. My anker powerbank which is Anker PowerCore Select 20000mAh Powerbank 2Port PowerIQ had only charged my phone 556 percent. In claimed 20000 mah it’s quite low. What should I do?
my 20000 mah powerbank has only 15000 mah capacity
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That is probably normal. Charging efficiency is around 70% normally, most of the energy is lost within the phone as heat.
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Any other comments? Should I return it with amazon?
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No.
Anything else you get won’t be better at efficiency.
The Powercore in itself is typically 94% efficient, so nearly perfect, and swapping it can’t make it better.
The cable typically loses 1% but if you have an old/cheap cable it can be much worse, 20% losses.
Most typically is your phone is doing two things which lose most of the energy.
- it is running itself while charging, so during recharge some energy is not going into the battery.
- there are conversion losses in all charging , experienced at heat by the phone feeling warm.
All of these stack up so about 70% efficiency overall of which the Powercore replacement won’t help. Check your cable.
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Hey @Murat_Hasdemir
I dont have anything more technical to add over @professor comment.
But from a personal perspective my 20000mah PowerCore gives my 4500mah phone battery about 3.5 charges = 15750mah.
So I guess if your after more charges out of a PowerCore them maybe something like this could be in order.
Or maybe buy a smaller, 10000mah PowerBank to compliment it for those time you need the extra charges.
Let us know what you decide!
It’s possible the phone is more efficient at one voltage over another, this product is QC3 so you can’t force it to a particular voltage. My tablet is more efficient at 5V than it is at 9V but I can force it by using the USBA port not the USBC port on my 10000 PD. This 20000 Select doesn’t allow this, so “it is what it is”.
The topic of consumers feeling, incorrectly, robbed of their mAh they thought they’d get is a very common issue. We can only educate.
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You can always try another brand
It’s not false advertising perse, but is due to conversion circuitry and power loss from heat between the cells in the power bank and the device being charged.
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The capacity reduction during charging is due to a 30% to 45% energy loss in the battery cells and conversion circuitry. Therefore, a fully charged Anker Prime 20,000mAh Power Bank offers an estimated 11000mAh to 14000mAh to power devices.
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It’s infuriating I know and I have multiple Anker products and Anker is above average for this where this phenomenon is even worst in most other manufacturer products.