【求助】用雷电口给笔记本供电有隐患没有？
Dell E7490 ，配了台 W15 扩展坞现在用扩展坞 通过雷电接口给电脑供电，有安全隐患没？谢谢了！
要炸机了，50到付解君愁{:1_245:} e7490可能会供电模块过热 不过有保修无所谓了 不知道TB16的内部构造是否和TB18DC一样，想搞个双头雷电线试试能否额外支持XPS9500/9700供电. 大D-Daring 发表于 2020-6-30 11:21
e7490可能会供电模块过热 不过有保修无所谓了
谢谢了！
扩展坞 和 笔记本同时供电可以不？ newnbuser 发表于 2020-6-30 12:02
谢谢了！
扩展坞 和 笔记本同时供电可以不？
没看懂。 大D-Daring 发表于 2020-6-30 12:14
没看懂。
扩展坞正常使用（需要电源）
笔记本用电源供电
这种情况 可以不？ 还有隐患没
谢谢了 哈哈哈。 newnbuser 发表于 2020-6-30 12:23
扩展坞正常使用（需要电源）
笔记本用电源供电
这种情况 可以不？ 还有隐患没
没用。只会从圆头取电，不会一起取电的
我试过5550插3个130w电源 还是只有一个发热 总输入功耗也没变化 大D-Daring 发表于 2020-6-30 15:06
没用。只会从圆头取电，不会一起取电的
我试过5550插3个130w电源 还是只有一个发热 总输入功耗也没变化
多谢了 7490雷电好像是选配吧？ mavic-cc 发表于 2020-7-2 00:44
7490雷电好像是选配吧？
我的有雷电口 ，不知道是不是选配 :D 大D-Daring 发表于 2020-6-30 11:21
e7490可能会供电模块过热 不过有保修无所谓了
供电模块是怎么用了pd充电器然后过热的，于情于理完全说不通啊。 偶有用 pd 充电器在 5300 的雷电口上，感觉没事啊？ odnemus 发表于 2020-7-10 23:26
供电模块是怎么用了pd充电器然后过热的，于情于理完全说不通啊。
不是mos管，是雷电芯片附近的分电硬件
的确有一些7490用pd烧雷电芯片的 我的5401当时带的就是type-c一直在用没有任何问题 大D-Daring 发表于 2020-6-30 15:06
没用。只会从圆头取电，不会一起取电的
我试过5550插3个130w电源 还是只有一个发热 总输入功耗也没变化
5750呢？看看这个。
XPS 17 9700 Significant Battery Drain Issue
Many Redditors and XPS 17 owners with the 4K, 2060maxQ, 10875H units have discovered significant battery drain under heavy load.
As noted by Notebookcheck, a highly reputable laptop review source: "Dell have clarified with us that they will be investigating the 130 W AC adapter power supply. The adapter should be able to provide 130 W of power to the laptop instead of the ~105 W maximum that we are recording. Thus, while the slow battery discharge rate may be normal when running demanding loads, it may be faster than what Dell was initially anticipating."
Link:
https://www.notebookcheck.net/2020-Dell-XPS-17-9700-facing-worrying-charging-issues-drops-from-100-p...
Can you please confirm that this ~105W maximum being recorded by all XPS 17 owners is a problem that will be addressed? Many of us will be either cancelling our orders or returning the units unless it is addressed and fixed.
Thank you
大D-Daring 发表于 2020-6-30 15:06
没用。只会从圆头取电，不会一起取电的
我试过5550插3个130w电源 还是只有一个发热 总输入功耗也没变化
5750呢？看看这个。
XPS 17 9700 Significant Battery Drain Issue
Many Redditors and XPS 17 owners with the 4K, 2060maxQ, 10875H units have discovered significant battery drain under heavy load.
As noted by Notebookcheck, a highly reputable laptop review source: "Dell have clarified with us that they will be investigating the 130 W AC adapter power supply. The adapter should be able to provide 130 W of power to the laptop instead of the ~105 W maximum that we are recording. Thus, while the slow battery discharge rate may be normal when running demanding loads, it may be faster than what Dell was initially anticipating."
Link:
https://www.notebookcheck.net/2020-Dell-XPS-17-9700-facing-worrying-charging-issues-drops-from-100-p...
Can you please confirm that this ~105W maximum being recorded by all XPS 17 owners is a problem that will be addressed? Many of us will be either cancelling our orders or returning the units unless it is addressed and fixed.
Thank you
大D-Daring 发表于 2020-6-30 15:06
没用。只会从圆头取电，不会一起取电的
我试过5550插3个130w电源 还是只有一个发热 总输入功耗也没变化
5750呢？看看这个。
XPS 17 9700 Significant Battery Drain Issue
Many Redditors and XPS 17 owners with the 4K, 2060maxQ, 10875H units have discovered significant battery drain under heavy load.
As noted by Notebookcheck, a highly reputable laptop review source: "Dell have clarified with us that they will be investigating the 130 W AC adapter power supply. The adapter should be able to provide 130 W of power to the laptop instead of the ~105 W maximum that we are recording. Thus, while the slow battery discharge rate may be normal when running demanding loads, it may be faster than what Dell was initially anticipating."
Link:
https://www.notebookcheck.net/20 ... drops-from-100-p...
Can you please confirm that this ~105W maximum being recorded by all XPS 17 owners is a problem that will be addressed? Many of us will be either cancelling our orders or returning the units unless it is addressed and fixed.
Thank you 本帖最后由 manofwind 于 2020-7-18 09:56 编辑
大D-Daring 发表于 2020-6-30 15:06
没用。只会从圆头取电，不会一起取电的
我试过5550插3个130w电源 还是只有一个发热 总输入功耗也没变化
5550和5750有点不一样， 很奇怪的一个问题。5750会在插着电源的时候，仍然从电池取电。但是5550就很好。
https://www.notebookcheck.net/20 ... ed-in.480923.0.html
It’s important to note that the XPS 15 9500 uses the same 130 W AC adapter as the XPS 17 9700 and we experienced no such charging issues on the 15.6-inch model. In fact, we were able to observe power consumption rates of up to 135 W on the XPS 15 whereas the XPS 17 is "capped" at 105 W.
网站自动翻译的， 将就看看
请务必注意，XPS 15 9500使用与XPS 17 9700相同的130 W AC适配器，我们在15.6英寸型号上没有遇到这样的充电问题。实际上，我们能够在XPS 15上观察到高达135 W的功率消耗率，而XPS 17在105 W时被“封顶”。
reddit的就不贴了，一堆呢
https://www.reddit.com/r/Dell/co ... ormal_while_gaming/
https://www.reddit.com/r/Dell/co ... s_17_battery_drain/
manofwind 发表于 2020-7-18 09:53
5550和5750有点不一样， 很奇怪的一个问题。5750会在插着电源的时候，仍然从电池取电。但是5550就很好。
...
不奇怪啊
5750双烤峰值功耗210瓦，单烤cpu峰值也有170瓦
长时间双满载 电池有电也可以150瓦
适配器就130 所以肯定会从电池取电咯
这个机器散热非常优秀，噪音也低 为了性能为难一下电池而已 常规操作
至于5550，无论是cpu还是gpu，功耗都明显低于5750 所以没必要从电池取电
其实偷偷也会有点
3000 7000系列也都会这么操作的 只是有的多有的少而已
毕竟每个人都背着240 330的大砖头 不是我们希望看到的
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