Go Back   Hardware Canucks > HARDWARE > Power Supplies

    
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old May 3, 2019, 01:38 PM
Mr. Friendly's Avatar
Hall Of Fame
 
Join Date: Nov 2007
Location: British Columbia
Posts: 2,267

My System Specs

Default a question about batteries...

I'm looking at rechargeable battery options from Ikea where they have 2450MaH AA's. not bad...but it makes me curious why they would still be making AA batteries that are 500 and 900 MaH's. doesn't make sense...unless it's old stock when batteries the size of 2450MaH were only dreamt of.
Reply With Quote
  #2 (permalink)  
Old May 3, 2019, 04:00 PM
Top Prospect
 
Join Date: Dec 2011
Location: GTA, Ontario, Canada
Posts: 239

My System Specs

Default

500 - 900 really.

I have Sanyo Eneloops RCSS PC branded that had 2000 mah from 2006.

Those Musta be really old or for low discharge devices ....
__________________
Gone mobile and back to Gaming to LEARN! :p
Laptop: Dell G5 i5-8300H, 16GB, 1050 4GB, Samsung EVO 970 500GB+EVO 860 500GB, Microsoft Sculpt Comfort Mouse
Gaming PC: i7-2600K, 32GB, EVGA 1070 8GB, Crucial BX500 250GB, WD 4TB, ASUS Xonar DX playing just CS:GO and some StarCraft 2
HTPC/Server: See "My System Specs". I also use it to virtualize an instance of Windows to my mobile devices.
Graphics Designer and Tech Journalist @ www.RealHardwareReviews.com ID: eyetrance
Reply With Quote
  #3 (permalink)  
Old May 3, 2019, 04:34 PM
Allstar
 
Join Date: Dec 2012
Location: Chilliwack...Time Is Just A Rubber Band....
Posts: 637
Default

These days the lower mah types are pretty much all NiCd and the higher capacity are NiMH. They each have strengths and weaknesses and the one you choose depends on the application.
Reply With Quote
  #4 (permalink)  
Old May 3, 2019, 05:15 PM
Mr. Friendly's Avatar
Hall Of Fame
 
Join Date: Nov 2007
Location: British Columbia
Posts: 2,267

My System Specs

Default

Quote:
Originally Posted by Valkyrie View Post
These days the lower mah types are pretty much all NiCd and the higher capacity are NiMH. They each have strengths and weaknesses and the one you choose depends on the application.

batteries are all about keeping a device powered as long as possible. can you sahre some examples where anything smaller than a 2800MaH (highest capacity AA battery I've found to date by EBL) would be warranted?

Last edited by Mr. Friendly; May 3, 2019 at 05:40 PM.
Reply With Quote
  #5 (permalink)  
Old May 3, 2019, 08:55 PM
Allstar
 
Join Date: Dec 2012
Location: Chilliwack...Time Is Just A Rubber Band....
Posts: 637
Default

The right battery for the job is not always the one that powers the device for the longest time. You were recently asking about battery powered area lights. If said lights are used infrequently, you might be better off using NiCd as they have half the self discharge rate of NiMH. NiCd has a very flat discharge curve in use and they don't mind being run flat. The NiCd will also handle much higher charge and discharge rates without damage. The most common use for lower capacity NiCd today is solar powered garden lights.


NiMH certainly has advantages when used properly, not the least being it's much more environmentally friendly chemistry.



It pays to do your homework when choosing batteries for a task.
Reply With Quote
Reply


Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
reputable UPS replacement batteries? sswilson Power Supplies 18 June 11, 2017 12:01 PM
Need help with batteries, please. upcoast604 Mobile Computing 6 September 16, 2011 11:06 AM
Looking for rare batteries (9v li-ion) - suggestions? FiXT Off Topic 7 April 26, 2009 05:32 PM
Silver-Zinc batteries muse108dc Rumor Mill 1 August 29, 2008 03:51 AM
replacement laptop batteries dheian Mobile Computing 5 January 13, 2008 03:55 AM