This looks kind of approx, I charged my iPhone again for 2 full charges and another 20% with lights already blinking on PowerCore 20000 PD, and finally dying at 24% on my iPhone.
so this setup kind of charges iphone for 3 full charges and another 60~75%
Sorry but not the perfect choice, but it’s not too bad, see below.
What you bought was 15+45. The 15 won’t charge the Powercore as fast as possible as that’s 18, the 45 is more power than you can currently use.
Your Powercore will when nearer to empty want 18W, 9V 2A. As it gets near full the 2A will drop. It will get that from your new charger 45W port but not from it’s 9V 1.66A 15W port, your phone when nearer to empty wants 30W, as both get nearly full they take less and less as they approach full.
For you the perfect fit of fastest charger at least cost was
As you ordered it, you may want to swap the items around, if the phone is above 80% charge put it in the 15W port as phone is by then slowing it’s recharge, or if the Powercore is nearly full then give it the slower port.
It’s only if both phone and Powercore are nearly empty would the minimum 18+30 have been faster.
The advantage of what you ordered would be if you had a laptop which was happy with 45W, so you’d likely find what you ordered gets used for more years as the day 45W is too little for your future gadgets is going to be later than if you got the 18+30 model.
Hello @professor
I have had the power bank and charger for a couple of weeks and they are simply outstanding.
The power bank seems to go on forever I get a good 4 charges out of it for my phone which more than covers my varied work patterns.
The charger fills the power bank overnight, haven’t timed it. And anything else I plug in gets charged quicker than any normal chargers I have.
So thanks again for yours and everyone else’s input.
4 feels a little too much, we were thinking about 3.4 chargers, but yes nearly 4 is reasonable.
Correct, that charger refills that powerbank in about 7 hours.
So yes its working about what we had discussed.
The 20Ah Powercore is noticeably heavier than 10Ah but you said it was in a bag and locker so that doesn’t matter, and you wanted 2 phone chargers and so this easily over-delivers. 20Ah is only a few $ more than 10Ah currently, so a good fit for your needs.
Glad you’re happy.
Ankerholic -
someone who bought Anker and it just worked so well kept buying it
After we did the calculation using the standard 2/3rds rule (67%), we since found for this particular 20Ah powerbank, a figured nearer 75% is probably safe. So 4 recharges may not be wrong, but we got in right ballpark.
So for your 4000mAh Galaxy s20 (can’t find the voltage or Wh so assuming common 3.7V) = 14.8Wh
72Wh / 14.8Wh * 0.75 = 3.6.
Oh, I got the same answer again. So should be 3.6, not 4, but if you start not quite empty… yes 4 is believable.
If 75% efficiency seems awful, it’s not Anker’s fault, most of it is lost within the Samsung phone as heat as it recharges itself. Anker is about 96% efficient (excellent) and cable losses 0.4% (excellent), the rest is inefficiency in the phone, most of which is the heat of chemical energy storage in the cells in the phone.
Phone will get less hot if you change the cable you use.
You’re using the USB-C (the oval shaped) port on the 20Ah to the Samsung?
Try a A-C cable (rectangular large one end, oval the other end) between the 20Ah and the phone. You’ll own one of them already probably. Find the shortest cable which looks good quality.
That forces a lower Voltage. It’s a fraction more efficient. The phone will recharge slower, but probably still recharge fast enough.
Give it a try.
The primary advantage of that 20Ah is a cost-effective 18W input so it recharges overnight instead of 20 hours which is what lower W input would have happened. But you don’t have to use 18W out, you can use 10W out.
If you are still happy with the phone recharge performance at 10W, and if your phone feels noticeably cooler, then this trick will mean your phone’s battery life is better in 2 years from now. It is not a significant difference, about 10% after 2 years, but say an hour more Screen-on-Time on your S20, 2 years from now, if you try to avoid a hot phone recharging.
Yes correct, I do use a USBC to USBC lead.
I’ll try a normal usb as I’ve noticed it hardly gets warm when wireless charging on the 10 w stand charger.
Thanks for the advice.
A-C cable is more vulnerable to a bad cable, you need a good quality cable, in general a shorter one is harder to be bad. But if you got a good “normal USB” short cable then give it a try…
