Battery Talk

Macbook Pro and powerbook G4 battery life

As regular readers will know, I own two notebooks, an original 1GHz 17″ Powerbook and a top of the Sony Vaio Z1. As we all know, the 1GHz 17″ Powerbook is based around a G4.

The PowerBook G4 battery  gets about 2-3 hours of battery life out of my typical use. That’s with the screen turned down to an acceptable level, now DVD drive use and most of the other power saving features switched on. I’ve had better than before now, but only when I’ve gone really offline and only the machine for writing or browsing content, rather than my more usual process of browsing the Internet (which implies wireless connectivity, and more power) and recompiling lots of code.

That’s why I specified the battery time in terms of my, so as not to confuse those readers who will chime in with comments that all timings are wrong…

The Sony Z1 is based around the Centrino set and the Pentium-M mobile CPU, both these components are predecessors to the components built into the new MacBook Pro. This has far more complex power saving systems, such as the ability to switch off (rather than simply not use) the DVD drive, and even to power off the PC Cards, built-in memory stick reader and of course reduce the CPU MHz and power requirements to a very low level.

With the standard HP laptop Battery on the Sony I get about the same period of battery powered usage as the Powerbook. It can be as high as 4 hours, but in the majority of cases a more realistic figure is about 3 hours of my more typical use.

I can slap in a larger A1008 A1012  battery (exactly twice the size and capacity) and that I can get about 6.5 hours mobile use. It does however ruin the look of the laptop, and raise the back by about 3/4 of an inch.

Now just to summarize:
Powerbook G4, 17″battery, standard battery: 2-3 hours
Sony Vaio Z1, standard battery: 2-3 hours

To get 2-3 hours (and more) out of a Powerbook is quite an achievement when you think about the Z1, which is Centrino/Pentium-M based and has a heap of power saving technology. Both are using the battery that came with the machine.

Standard laptop battery, standard machines, more or less equal battery life.

Just in case the point I’m making still isn’t clear, using the Vaio, a notebook using the previous version of ‘low power’ technology that is in the new MacBooks I get the SAME battery life as my G4.

What could I expect out of the new MacBook Pro?

I’d expect about the same as I get from the Vaio, perhaps a modest 10-15% increase based on the newer technology, but that has to be tempered by a combination of other factors, like the fact that this is a first generation item from Apple, and that we’re using newer Dual-Core CPU.

For some reason however we have a bunch of Apple commentators (I refuse to call them fans, since they seem to be doing nothing more than slagging Apple off at the moment) who seem to think that the new PowerBooks should have 5, 6 or 7 hour battery life.

Why?

Hell knows – existing PC laptops get – as my Vaio experience demonstrates, about 2-3, 4 hours tops.

Why would an Apple-built, Intel based laptop somehow defy the laws of physics, common sense and exceed the capabilities of PC laptops that have been made by manufacturers using the technology for years before Apple got to it, somehow exceed by a factor 75% or more the inspiron 6400 battery life of existing Intel based laptops?

There’s a finite amount of power you can squeeze into a battery, and there’s a limit to how much you can reduce the power requirements of a laptop.

From a first generation – and more importantly, at the moment, pre-production Apple Intel notebook I think a time of 4 hours is pretty good. That actually equals, or beats, my Vaio my Dell Latitude D620 Battery Dell Latitude D820 Battery.

While I’d love to see Apple produce a laptop that has a longer battery life, we need to be realistic. It’s going to take Apple a while to get the best out of the hardware, and even if they do improve the battery life, they wont be the first to do so – other PC notebook manufacturers will probably get there first. Apple were one of the first 10 companies to announce a dualcore Yonah laptop battery manufacturer??, so we’re already at the bleeding edge.

Meanwhile, give Apple a break – they enough on their plate right now without people criticising them for matching or beating the battery life of their old laptops and their current competitors.

The article from : http://theappleblog.com/2006/01/15/macbook-pro-battery-life/

Dell Netbook Display Better Than MacBook Pro

According to Rob Galbraith, that is. The veteran photographer and detail-obsessed camera reviewer has turn his lens onto notebook display, reviewing them specifically as they relate to the pro-snapper.

The shocker is that the Dell Mini 9 beats the unibody 15″ MacBook Pro on color accuracy, although on viewing angle it slips back down the league table as inspiron 1150 battery 6t473.

It turns out that Galbraith doesn’t like the new glossy glass screens Apple has forced upon its two smaller notebooks:

For the longest time battery life as pa3420u-1brs pa3450u-1brs, Apple laptop displays ruled the roost around here. With very few exceptions, going back to the days of the PowerBook G4, portable Macs were considerably more colour accurate than any of the dozens and dozens of PC laptops we’d profiled [...] Macs are no longer at the top of the laptop display heap in our minds.

That’s got to hurt. The test also took in an old classic, the ThinkPad T60, and Lenovo’s new 17″ behemoth, the ThinkPad W700. Of the four, the ThinkPads swapped first and second place between them on color accuracy and angle of view. The giant desktop replacement got the color so spot-on because of the optional $70 built in color calibrator, which – at the touch of a button and close of a lid – will set the clors right in just three minutes.

It’s interesting the see the Apple machine score so badly, though. Macs are huge amongst photographers, and getting beat by a netbook is just plain embarrassing.

In the end the dell have more Laptop battery Discount laptop battery the macbook pro.