Do you leave your Chargers plugged in?

70 posts / 0 new
Last post
xxx
xxx's picture
Offline
Last seen: 2 years 7 months ago
Joined: 03/17/2013 - 08:20
Posts: 392

I unplug my charger when not in use

THE_dAY
Offline
Last seen: 12 hours 51 min ago
Joined: 05/18/2013 - 12:56
Posts: 467
Location: sfv, california

Joshk, thanks for the pic of the SP1 with the kill-a-watt!

Joshk
Joshk's picture
Offline
Last seen: 8 hours 19 min ago
Joined: 09/09/2015 - 12:12
Posts: 2719
Location: USA

Well we all know errors have the greatest impact on tiny measurements like the vampire current I was measuring. But it’s an incredible device for $17. Let me say that again, $17. Here is how it compares to a fully calibrated $500 Fluke 87v with True RMS.

Fluke 87V True RMS Multimeter with AcuCal calibration
123.0 V
0.016 A
60.01 Hz

Kill-A-Watt P3 P4400
123.4 V
0.01 A
60.0 Hz

0.28 PF
2.1 VA

That goes beyond the accuracy I would expect for $17 and makes this an incredible device. ToyKeeper can back this up I bet, but it’s very likely the Amps are truncated for display instead of rounded so they could be much more accurate than this test reveals.

Joshk
Joshk's picture
Offline
Last seen: 8 hours 19 min ago
Joined: 09/09/2015 - 12:12
Posts: 2719
Location: USA

I won’t be tempting fate for more tests.

Bort
Bort's picture
Online
Last seen: 5 min 59 sec ago
Joined: 06/01/2012 - 17:15
Posts: 8349
Location: Holding the proverbial flashlight
gauss163 wrote:
Joshk wrote:
I won’t be tempting fate for more tests.

How unfortunate. You’d be doing a lot of folks a favor, esp. those considering purchasing one, and those who own one but don’t have a calibrated reference for comparison, etc.


perhaps HKJ would be interested in testing this?

The Journal of Alternative Facts TM

"It is critical that there is a credible academic source for the growing and important discipline of alternative facts. This field of study will just keep winning, and we knew that all the best people would want to be on board. There is a real risk in the world today that people might be getting their information about science from actual scientists"

 

 

 

HKJ
HKJ's picture
Offline
Last seen: 2 weeks 2 days ago
Joined: 05/24/2011 - 12:23
Posts: 7447
Location: Copenhagen, Denmark

Bort wrote:
perhaps HKJ would be interested in testing this?

No, it is a device for measuring US mains, it would not get a fair test on EU mains.

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

Bort
Bort's picture
Online
Last seen: 5 min 59 sec ago
Joined: 06/01/2012 - 17:15
Posts: 8349
Location: Holding the proverbial flashlight

HKJ wrote:

Bort wrote:
perhaps HKJ would be interested in testing this?

No, it is a device for measuring US mains, it would not get a fair test on EU mains.


That sucks Sad
I’m guessing they don’t make an EU version?

The Journal of Alternative Facts TM

"It is critical that there is a credible academic source for the growing and important discipline of alternative facts. This field of study will just keep winning, and we knew that all the best people would want to be on board. There is a real risk in the world today that people might be getting their information about science from actual scientists"

 

 

 

Joshk
Joshk's picture
Offline
Last seen: 8 hours 19 min ago
Joined: 09/09/2015 - 12:12
Posts: 2719
Location: USA

I’m just not setup to do it safely. And I’m unsure how many readers are on this thread. And even if I test the crap out of mine the next point someone will make will be that it’s only the results from one Kill-a-watt. And it’s a good point. Even if mine is incredible, we don’t know if the next one sold is the same. Although with my luck I’d say I didn’t get the only good one. Smile

HKJ
HKJ's picture
Offline
Last seen: 2 weeks 2 days ago
Joined: 05/24/2011 - 12:23
Posts: 7447
Location: Copenhagen, Denmark

Bort wrote:
That sucks Sad I'm guessing they don't make an EU version?

I have not seen a EU version.

The main problem is the different frequency (I can handle the voltage). With cheap measuring equipment the difference between 50/60Hz might not be handled very well, that might give errors you will not see when using it in US.

The two professional watt meters I have handles it without problems and they do also handle power levels below 1watt with good precision and resolution.

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

Pages