USB-C Hub: HDMI & SD Card reader, will it drain my systems battery?

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MacBook Pro 13" Function Keys 2017

A1708/EMC 3164—于2017年6月上市，这台入门级MacBook Pro保留了它的传统功能键（相对于OLED触控条）。

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NARAYANAN LAKSHMANAN @narayananl51720

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发帖于: 2019年5月8日

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USB-C Hub: HDMI & SD Card reader, will it drain my systems battery?

I bought a USB-C hub unit which offers HDIM & SD Card reader for my MacBook Pro its made in China. I bought it from Amazon.

My gut feeling this device is generating heat (drawing power) that may be the reason for my system to shut down even when there’s 50% charge.

I will obliged and thankful if you can throw more light on this issue.

Narayanan Lakshmanan India

I am enclosing the details whatever I have,please guide me Narayanan Lakshmanan India

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What is the exact make and model of the hub? Also what are you using with it.

由 Dan 完成的 2019年5月8日

Can you still give us the maker and the model as there are just to many that make this device.

由 Dan 完成的 2019年5月8日

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arbaman @arbaman

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In principle the adapter if working correctly shouldn’t drain any battery power at all, unless in use. A battery power shutdown at 50% charge points to some issue I find a bit hard to associate to an adapter. Try downloading coconut battery and take a couple of screenshots of battery status with and without the adapter plugged in place so as to have a hint of battery conditions as well as instant power draw with adapter in place to get a better picture.

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Not that simple! These Hubs can be active so just leaving them plugged in can drain your systems battery.

This is one of the issues with USB-C being used as a power input and output (bi-directional).

由 Dan 完成的 2019年5月9日

Thank you very much for the wonderful advice,it means I should disengage completely after shutting down the system or else should I refrain from using it.Please advice Thank you Narayanan Lakshmanan India

由 NARAYANAN LAKSHMANAN 完成的 2019年5月9日

@ Narayanan If you can do those couple tests I suggested we might be able to get an idea if the adapter draws excessive power even if not in use. Maybe we won't get anywhere but it would be worth a try. Otherwise I have no idea what to recommend..surely if you remove the adapter and yet have shutdowns the second candidate to look at it would be the battery.

由 arbaman 完成的 2019年5月9日

I have already done that test and I tried to send it along unfortunately I was not able to upload it please guide me.Thank you Narayanan Lakshmanan India

由 NARAYANAN LAKSHMANAN 完成的 2019年5月9日

@ Narayanan I see you found your way into adding images after all ;) I don't know what's the reason behind, but your battery is in a pretty bad shape, capacity left shows only 64/68 % , maybe it was left fully drained for some time ? From here onwards expect issues, sudden shutdowns are almost certainly coming from battery conditions.

Still, if you want to check your adapter power consumption disconnect the charger, check the discharge figures in Wh that will take place of charging figures your app shows at the time you took screenshots.

Connect and disconnect your adapter and see if your "discharging with.." data get modified.

由 arbaman 完成的 2019年5月10日

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What is the exact make and model of the hub? Also what are you using with it. — Dan
Can you still give us the maker and the model as there are just to many that make this device. — Dan
Not that simple! These Hubs can be active so just leaving them plugged in can drain your systems battery.

This is one of the issues with USB-C being used as a power input and output (bi-directional). — Dan
Thank you very much for the wonderful advice,it means I should disengage completely after shutting down the system or else should I refrain from using it.Please advice Thank you Narayanan Lakshmanan India — NARAYANAN LAKSHMANAN
@ Narayanan If you can do those couple tests I suggested we might be able to get an idea if the adapter draws excessive power even if not in use. Maybe we won't get anywhere but it would be worth a try. Otherwise I have no idea what to recommend..surely if you remove the adapter and yet have shutdowns the second candidate to look at it would be the battery. — arbaman
I have already done that test and I tried to send it along unfortunately I was not able to upload it please guide me.Thank you Narayanan Lakshmanan India — NARAYANAN LAKSHMANAN
@ Narayanan I see you found your way into adding images after all ;) I don't know what's the reason behind, but your battery is in a pretty bad shape, capacity left shows only 64/68 % , maybe it was left fully drained for some time ? From here onwards expect issues, sudden shutdowns are almost certainly coming from battery conditions.

Still, if you want to check your adapter power consumption disconnect the charger, check the discharge figures in Wh that will take place of charging figures your app shows at the time you took screenshots.

Connect and disconnect your adapter and see if your "discharging with.." data get modified. — arbaman

AdamG @adamgregus 声誉积分: 1 · Answer 1 · 2020-06-17T00:34:46-07:00

AdamG @adamgregus

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I had the same problem with my hub. When it was connected to my MacBook it drained my battery from 100% to 58% during the night. Next evening after charging I disconnected the hub and in the morning the battery was on 98%. Yeah…the hub is a crap even it was 120€…

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MacBook Pro 13" Function Keys 2017

USB-C Hub: HDMI & SD Card reader, will it drain my systems battery?

Update (05/08/2019)

Update (05/09/2019)

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