New Latitude 5470

Assuming you have the standard nominal 55WHr battery, if you have the screen on minimum brightness, disconnect the internet and are doing an undemanding task such as reading a PDF file or editing a Word document then you might possibly get to 10 hours. 8 hours is more likely under light usage and 5 to 6 hours under more typical real world conditions. If there is a bigger battery option then you might get 10 hours.

John

 

i get maybe 5-6 hours real world (mix of tasks, medium brightness)

carry around the PW7015L 65Whr external battery (to charge laptop and phone), no worries from my end

 

thanks John and Paper. I got the i5-6300u processor, FHD screen and the larger 62 whr battery option.

Notebookcheck review is saying 11 hrs with the HD screen and i5-6300u processor. I was wondering what folks here were getting in real life.

Paper, what specs is your e5470? do you have the low power U processor or the quad HQ?

John, you currently have the e7450. reviews say with the 54 whr larger battery, the e7450 with FHD screen can do about 7-8 hrs real world usage?

 

You can see the comments about the battery in my E7450 review. I think that notebook will struggle to get 7-8 hours of real world usage unless the user is very conscious of the need to save power. I would also add that my recent Dells have all had a battery where the capacity drops by 6 or 7% from the nominal capacity after about 5 minutes of use (I wonder if this is by design to reduce wear). Combined with Windows hibernating with a minimum 3% remaining (but it's not good for the battery to be run that low on a regular basis) and you lose 10% of the claimed capacity.

While it is possible to see a power drain of less than 5W under light usage, the real world involves opening and closing files, refreshing web pages, scrolling displays, etc, all of which result in temporary increases in power consumption giving an average which may be 5% higher. Then if you like the display brighter that's another watt or two of power. Extrapolating from the E7450, the E5470 with a 62WHr battery should get an extra hour due to the larger battery and might while the newer generation of Intel hardware may increase that further.

However, the real world also involves breaks from using the computer so, if you set short timeouts for turning off the displayand going to sleep then your total real world elapsed time (as opposed to actual usage) could creep up towards the 10 hours. For many of us, it would be comforting to know that the computer can keep going for the working day without needing a power socket and far too often the manufacturers leave us a little short.

John

 

John, thanks. That is probably the answer I could ever get about battery life!

My brother has the thinkpad t450s with the larger 72 whr battery added to the 23 whr battery internally. He is literally getting 12-13 hrs real world battery life. I was hopping around cafes and we were working remote. He was doing all sorts of tasks on the T450s. He has a i5 5200u and FHD screen on the T450s. His T450s just would not stop running all day and the next day! lol But with the 72 whr batter, the T450s ends up weighing about 4.1 lbs or so. The dell e5470 will weigh about 3.88 lbs or so.

That's unfortunate the hear about in terms of the Dell battery. Well, i ordered the computer. I hope to report some good results with the battery life

 

I have 1080p matte, quad HQ (6820hq), two sticks of ddr4(2x16GB), dual drives (m.2 ssd and 2.5" 5200rpm)

As John says, I see about a 5W idle draw on idle (translating to 10+hr on a 62Whr battery). But my workload varies, typivally goes between 10-18W draw, so 3-6hours)

E5470/7470 don't have quick access removable battery... So the 6-cell portable external battery (pw7015l) is the only option. Adds about one pound, but I don't bring the charger out anymore

 

You are carrying around a high power portable desktop for any situation! pretty cool stuff

Yes. the only option these days is an external so, 5 lbs or so total weight for more than all day battery is pretty good.

 

Paper or John, I am looking for a performance 14" laptop and I finalized two models. Latitude E5470 and thinkpad t460p(i7 is available in US right now with dual heat pipes). I know e5470 supports PCIe NVMe SSD. I couldn't find any direct comparisons with these two core i7 models.

Any other items did you consider before going for dell?

Not intend to bump this thread but I thought posting it here will be more relevant.

 

just my 2 cents, i think you should go for the Dell e5470. a few reasons:

1. dell's global warranty is far superior to Lenovo
2. the 2 click buttons on the trackpad is just necessary. The thinkpad buttonless trackpad is very problematic and you right click by mistake all the time
3. dell outlet has some great deals on e5470's now

Thinkpads have great keyboards, but the ctrl / fn keys switching places is also another problem for many people.

one huge advantage of the thinkpad t460p is the bridge battery. I wish Dell had this...

 

Hi John,

I love your review of the e7450 as you wrote here: http://www.notebookreview.com/notebookreview/dell-latitude-14-7000-e7450-review/2/

It almost makes me regret buying my e5470.

battery life is probably the most important factor for me since I'm on the road a lot and 7-8 hrs real world usage on the e7450 plus the lightweight removable battery option is great. Its the last of the 7000 series that has this. sad eh?

thanks again!