I bought a Qi wireless charger recently and wanted to find out how it compared to wired charging on my Nexus 4, so I ran a small experiment.
- Nexus 4
- Qi wireless charger (Amazon)
- Nexus 7 (gen 1) charger (5V, 2A)
- Ringke slim fusion case (Amazon)
The Qi charger I used does not come with the charging plug, you have to provide your own. The Qi charger is rated at an input of 5V 1.5A, and a claimed 72% efficiency. The wired charger that comes with the Nexus 4 is rated at 1.2A. So I decided to use the charger from my first gen Nexus 7, which can deliver 2A.
The Nexus 4 website actually notes that you should not use the Nexus 4 charger with a wireless charger, as it might not generate the required current.
The Ringke case protects the back as well as the sides of the Nexus 4, and therefore increases the space between the phone and the wireless charger by around 2mm.
I started with the Nexus 4 charged at around 30%, I rebooted the phone, and then placed into Airplane mode to ensure the quickest charge rate possible. I ran the test 3 times, once for each of the following scenarios:
- Wired charge
- Wireless charge with no case
- Wireless charge with case
I placed the phone on charge for exactly 1 hour each time, and did not use the phone (or turn on the screen) while charging. When using the Qi charger I made sure that it was positioned at the optimum location. (The centre of the charging coil within the Nexus 4 seems to be around 5.5cm from the phone’s base, see this image)
The increase in charge after 1 hour is given below for each scenario:
- Wired charge = (30-74%) 44%
- Wireless charge with no case = (30-72%) 42%
- Wireless charge with case = (30-66%) 36%
I must admit to being a little surprised at how close the wireless charging is to the wired charging. Even with the case on, the charge went from 30% to 66% in 1 hour.
I bought a wireless charger mostly due to frustration with having to use the awful Micro-USB connector each night (often trying to plug it in in the dark). If there’s one thing Apple has done right recently it’s introduce the Lightning Connector, it’s a far superior user experience when compared to Micro-USB.
I currently have 12 years worth of digital photographs, >50Gb in total . Currently, all these images are stored on my Windows Home Server(WHS), the files are duplicated across 2 hard drives (one of the useful features of WHS). Although I’m very happy with my WHS, I am concerned that although duplicated, all my images are stored on a local server. This weekend I’ve spent a little time solving this issue. I’ve turned off duplication for my images, and instead created a 2nd backup in the Cloud, SkyDrive to be precise. (it’s always best to have 2 backup’s, one on-site and one off-site). Here’s what I did: Read more…
Just a quick post to describe my issues upgrading from Win 7 to Win 8.
The in-place upgrade requires 20GB of free disk space. As my OS is installed on a 60GB SSD this was an issue. I had to remove a lot of programs (including Office 365, which, very annoyingly, does not offer a choice of installation directory!). I also moved the “My Documents” folder from my User folder (not manually, I told Windows to relocate it) to my 2nd drive, as this was taking up a lot of space. Read more…
I hate when you Tweet about something and within seconds you get a canned spam response….I really hate when the canned response is just plain WRONG. I storified my spam experience. Read more…
I’m a big fan of Evernote. I’ve been an Evernote user for nearly 5 years (I used the early versions that weren’t cloud based, and had a very questionable UI). One of the great features is the ability to scan documents into Evernote, which are then searchable due to Evernote’s OCR capability). I don’t like clutter, so getting rid of the enormous amount of paper that seems to come through my letterbox each day is great. The problem I have is that getting this stuff into Evernote is still a bit of a chore.
I’ve been using MS Word for almost 20 years, I started using it at university for writing technical reports, and continued when I started work for a research & development company. A report written with MS Word was often the major deliverable to the customer at the end of a lengthy research project. Word was the corporate standard, and it was used by the majority of people every day (9000 people). The problem with Word is that the majority of people don’t “use” Word, they “misuse” Word.
I can’t count the number of times I’ve seen people struggle with a document, not because of the content, but because of the formatting. It was never an issue with Word, it was always an issue with the user. Here are my top tips for creating a Word document the right way.
Microsoft Windows has been the dominant OS on home PCs ever since there was such a thing as a home PC. Looking back now it’s very clear to me that for the last 20 years we have all been the victim of mis-selling. It isn’t that Windows is bad, I love it, and Windows 7, the latest incarnation, is a pleasure to use. But…I’m not normal, I’m a tech guy, I have a science background and 13 years experience working in R&D. Windows PCs were the tools I used every day to do my job, and it was inevitable that this would spill over into my home life. I now have three Window 7 PCs, and a Windows Home Server, all of which I built myself, they were not so much consumer products to me, they were more like mini projects. I can’t imagine not having a Windows PC, but as I said, I’m not normal. Read more…