Dell Precision M3800 Owner's Review

I get that but I need an external battery and I'm sure it will not be recognized by the m3800; So unless Dell are selling an compatible external battery like the hyperjuice I'm going to use RMClock to set the performance profile with a standard charger to test before buying the hyperjuice. ThrottleStop option seems risky but RMClock power profiles look promising.

 

Here is a pic of the power settings :

 

Thanks for that. Have you had the discoloration of the palmrest as shown in the image I posted?

 

not yet. You might look for something like this SkinStyler, Macbook Skins for Trackpad and Wrist Rest Protection for the palmrest.
On the other hand in the first days of buying the m3800 and as soon as I started seeing wear signs on the the touchpad I installed the DIY touchpad film. the touchpad is smooth and still precise. Really something to do to keep a nice shiny touchpad

 

I recall reading that the M3800 will play fairly well with a 90W PSU. One option would be to hack open a dead 90W Dell PSU, find the chip that reports the rating to the computer and incorporate that into your battery output. Or you could use a 135W chip if you are confident that your battery can deliver. I don't know where you would find the chip in the PSU but it must be at the end of the wire that goes to the central pin of the plug.

The alternative, more inefficient, route is to use the battery with an inverter into which you plug the normal PSU. The system would then be comfortable and self-regulate because, if the load on the battery or the inverter becomes too big then something will cut out and the computer will run on battery.

As noted above, I would be cautious about letting the computer try to use more power than the source can deliver.

John

 

I contacted this other company which seems to offer powerfull external batteries and do list many dell laptops on their compatibility list. BiXPower Bat-BP220
Battery weight is almost the m3800 weight 1.3kg

 

I would specifically ask them if it supports the internal pin in Dell PSUs that conveys the power rating information. The socket on the PSU itself looks to be a simple connector without support for the extra pin.

It might not include the thin Dell power plug used in the M3800 in which case you would need the power tip adapter dongle.

Subject to these provisos, a ready made PSU would be an easier route to your external battery unless you are heavily into electronics.

John

 

I asked the bixiower company about compatibility but still no reply.
what do you mean byt a ready made psu? I will buy the power tip adaptor and test rmclock with a 4.5 non dell charger first.

 

Sorry for any confusion, I meant a ready made battery power supply.

John

 

Totally agree with this, however the monitors in question work at full resolution (2560 x 1440) on a Macbook Pro using HDMI and using the intel video report i am shown the monitor supports 2560 x1440 60hz. only i dont have any options larger than 1080p when i go to change the resolution.

Unfortunately I dont have access to any other monitors of similar spec which is the first option Dell recommended. They are now asking me to try nvidia Beta driver (but this hasnt helped).

I am just wondering if anyone else is have a similar problem with a Dell branded monitor or whether this is a wider problem which hasnt been noticed until now.


Thanks