Dell laptop battery

paul1968uk · 12-30-2006, 08:39 AM

Hi

We have a Latitude D600 and a Latitude D610 and the thing i cant work out is when battery is on 600 we get 4hrs but when put on 610 its only half that but showing full charge on both machines
there is a massive difference in battery life to both systems, if i use the same battery ie on the 600 i get 3hrs 50m and on the 610 i get 50mins.
The systems are similar ie both have same amount of ram, same hard drive. and processers are slightly different as 600 has 1.4 pentium m and 610 is running a 1.86 centrino both on xp pro.
The ram is ddr2 on 610 i would think.
Software is similar except 610 has dell quickset and i need to update bios on 610 as its running version 3 and version 6 is out now.

**TheMatt** · 12-30-2006, 10:48 AM

The 1.4 GHz Pentium M was a very low power CPU. Which is the Centrino chip? If that is a Core Duo or a Core 2 Duo, then that would explain it. Also, if the power scheme is on Notebook/Laptop on the D600 and the Power scheme is on Always On on the D610, then that would explain it as well. Switch the power schemes so they are the same and see if you get more equal battery life between the two laptops.

paul1968uk · 12-30-2006, 01:20 PM

Hi

Both are set exacly the same throughout the setting range and the 610 is a 1.8ghz 782mhz the 600 is a 1.44

**TheMatt** · 12-30-2006, 03:25 PM

I just checked, the D610 has an Intel Pentium M 750 1.86 GHz, and the D600 has an Intel Pentium M 738 1.40 GHz. The 738 is a lower voltage CPU than the 750, and it runs at a faster speed, so that would explain the battery life. Also, if the D610 has more RAM or a faster hard disk, then then it would have a lower battery life. And the Mobility Radeon 9000 in the D600 will take less power than the X300 in the D610.

paul1968uk · 12-30-2006, 03:58 PM

Thank you for taking the time to look over both specs for me, i was also thinking of upping the memory to 1ghz but might rethink that now.

**JP198780** · 12-30-2006, 04:07 PM

RAM would boost battery life...

and it's 1GB, not 1GHZ

..

**TheMatt** · 12-30-2006, 08:35 PM

RAM would have a small but slightly noticable impact on battery life, as higher capacity modules use more power than lower capacity modules. But the main thing is the CPU and GPU differences.

paul1968uk · 12-31-2006, 08:45 AM

Hi Guys

Ive done a spec on both machines to see what you think.
D600
Pentium m 1.40ghz-600mhz
cache-1024kb
memory 512mb@266mhz
video- ati radion 9000
40gb-hdd

D610
pentium m 1.86ghz-800mhz
cache-2048kb
512mb@533mhz
memory channel- dual
video- intel 915gm graphics
40gb hdd

**TheMatt** · 12-31-2006, 10:08 AM

I guess your D610 didn't have the X300, but the Pentium M would definatley be the cause of the shorter battery life. And another thing, the D610 may have a smaller battery (for example, a 4-cell instead of a 6-cell like the D600).

paul1968uk · 12-31-2006, 11:14 AM

Hi Matt

We interchanged the battarys from 1 machine to the other to test.
i have 3 batterys 2 are 48wh and 1 is a 53wh

12-30-2006, 08:39 AM	#1 (permalink)
paul1968uk Registered User Join Date: Dec 2006 Location: uk Posts: 26 OS: win xp-pro	Dell laptop battery Hi We have a Latitude D600 and a Latitude D610 and the thing i cant work out is when battery is on 600 we get 4hrs but when put on 610 its only half that but showing full charge on both machines there is a massive difference in battery life to both systems, if i use the same battery ie on the 600 i get 3hrs 50m and on the 610 i get 50mins. The systems are similar ie both have same amount of ram, same hard drive. and processers are slightly different as 600 has 1.4 pentium m and 610 is running a 1.86 centrino both on xp pro. The ram is ddr2 on 610 i would think. Software is similar except 610 has dell quickset and i need to update bios on 610 as its running version 3 and version 6 is out now.

12-30-2006, 10:48 AM	#2 (permalink)
TheMatt TSF Enthusiast Join Date: May 2006 Location: Boston Posts: 13,701 OS: Win 3.1, 98, NT 4.0, XP Debian 4.0, Kubuntu 6.06 My System Blog Entries: 3	The 1.4 GHz Pentium M was a very low power CPU. Which is the Centrino chip? If that is a Core Duo or a Core 2 Duo, then that would explain it. Also, if the power scheme is on Notebook/Laptop on the D600 and the Power scheme is on Always On on the D610, then that would explain it as well. Switch the power schemes so they are the same and see if you get more equal battery life between the two laptops. __________________ - Matt M - KB1OSC - Folding@Home 85015 [url="http://www.techsupportforum.com/hardware-support/"] If TSF has helped you, please consider donating. If I have stopped responding to a thread, feel free to send me a PM with a link to the thread. It is advisable to subscribe to threads so you will receive updates when replies are posted. You can subscribe to threads from the "Thread Tools" Menu. »Memtest86 »Prime95 »UBCD »SpeedFan »NHC Personal »Everest »Sandra »PC Wizard »RivaTuner »ATi Tool Click here for Useful Articles and Guides

12-30-2006, 03:25 PM	#4 (permalink)
TheMatt TSF Enthusiast Join Date: May 2006 Location: Boston Posts: 13,701 OS: Win 3.1, 98, NT 4.0, XP Debian 4.0, Kubuntu 6.06 My System Blog Entries: 3	I just checked, the D610 has an Intel Pentium M 750 1.86 GHz, and the D600 has an Intel Pentium M 738 1.40 GHz. The 738 is a lower voltage CPU than the 750, and it runs at a faster speed, so that would explain the battery life. Also, if the D610 has more RAM or a faster hard disk, then then it would have a lower battery life. And the Mobility Radeon 9000 in the D600 will take less power than the X300 in the D610. __________________ - Matt M - KB1OSC - Folding@Home 85015 [url="http://www.techsupportforum.com/hardware-support/"] If TSF has helped you, please consider donating. If I have stopped responding to a thread, feel free to send me a PM with a link to the thread. It is advisable to subscribe to threads so you will receive updates when replies are posted. You can subscribe to threads from the "Thread Tools" Menu. »Memtest86 »Prime95 »UBCD »SpeedFan »NHC Personal »Everest »Sandra »PC Wizard »RivaTuner »ATi Tool Click here for Useful Articles and Guides Last edited by TheMatt; 12-30-2006 at 03:28 PM.

12-30-2006, 08:35 PM	#7 (permalink)
TheMatt TSF Enthusiast Join Date: May 2006 Location: Boston Posts: 13,701 OS: Win 3.1, 98, NT 4.0, XP Debian 4.0, Kubuntu 6.06 My System Blog Entries: 3	RAM would have a small but slightly noticable impact on battery life, as higher capacity modules use more power than lower capacity modules. But the main thing is the CPU and GPU differences. __________________ - Matt M - KB1OSC - Folding@Home 85015 [url="http://www.techsupportforum.com/hardware-support/"] If TSF has helped you, please consider donating. If I have stopped responding to a thread, feel free to send me a PM with a link to the thread. It is advisable to subscribe to threads so you will receive updates when replies are posted. You can subscribe to threads from the "Thread Tools" Menu. »Memtest86 »Prime95 »UBCD »SpeedFan »NHC Personal »Everest »Sandra »PC Wizard »RivaTuner »ATi Tool Click here for Useful Articles and Guides

12-31-2006, 10:08 AM	#9 (permalink)
TheMatt TSF Enthusiast Join Date: May 2006 Location: Boston Posts: 13,701 OS: Win 3.1, 98, NT 4.0, XP Debian 4.0, Kubuntu 6.06 My System Blog Entries: 3	I guess your D610 didn't have the X300, but the Pentium M would definatley be the cause of the shorter battery life. And another thing, the D610 may have a smaller battery (for example, a 4-cell instead of a 6-cell like the D600). __________________ - Matt M - KB1OSC - Folding@Home 85015 [url="http://www.techsupportforum.com/hardware-support/"] If TSF has helped you, please consider donating. If I have stopped responding to a thread, feel free to send me a PM with a link to the thread. It is advisable to subscribe to threads so you will receive updates when replies are posted. You can subscribe to threads from the "Thread Tools" Menu. »Memtest86 »Prime95 »UBCD »SpeedFan »NHC Personal »Everest »Sandra »PC Wizard »RivaTuner »ATi Tool Click here for Useful Articles and Guides

12-30-2006, 01:20 PM	#3 (permalink)
paul1968uk Registered User Join Date: Dec 2006 Location: uk Posts: 26 OS: win xp-pro	Hi Both are set exacly the same throughout the setting range and the 610 is a 1.8ghz 782mhz the 600 is a 1.44

12-30-2006, 03:58 PM	#5 (permalink)
paul1968uk Registered User Join Date: Dec 2006 Location: uk Posts: 26 OS: win xp-pro	Thank you for taking the time to look over both specs for me, i was also thinking of upping the memory to 1ghz but might rethink that now.

12-30-2006, 04:07 PM	#6 (permalink)
JP198780 TSF Regular Join Date: Dec 2006 Location: Deptford, NJ Posts: 700 OS: XP Pro, Home My System	RAM would boost battery life... and it's 1GB, not 1GHZ ..

12-31-2006, 08:45 AM	#8 (permalink)
paul1968uk Registered User Join Date: Dec 2006 Location: uk Posts: 26 OS: win xp-pro	Hi Guys Ive done a spec on both machines to see what you think. D600 Pentium m 1.40ghz-600mhz cache-1024kb memory 512mb@266mhz video- ati radion 9000 40gb-hdd D610 pentium m 1.86ghz-800mhz cache-2048kb 512mb@533mhz memory channel- dual video- intel 915gm graphics 40gb hdd

12-31-2006, 11:14 AM	#10 (permalink)
paul1968uk Registered User Join Date: Dec 2006 Location: uk Posts: 26 OS: win xp-pro	Hi Matt We interchanged the battarys from 1 machine to the other to test. i have 3 batterys 2 are 48wh and 1 is a 53wh