Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


qwerty7

434 posts

Ultimate Geek
Inactive user


#120881 17-Jun-2013 08:05
Send private message

I have a undien cordless phone with a 3.6v 500mah ni-cad
I cant find the model number (bt-905s)on the dse or jaycar websites
Is it safe to use a 3.6vni-cad phone battery with a different mah rating e.g 800 or 1000mah

also I see they are allot cheaper on trademe? e.g $5 as opposed to $30 should those ones be avoided?

Also should i stick to ni-cad or could i use ni-mh?


Create new topic
robjg63
4090 posts

Uber Geek

Subscriber

  #837924 17-Jun-2013 09:06
Send private message

Pretty hard to find the 'exact' replacement battery without paying more than a new phone isnt it?

I looked into this a while ago for a phone with a dodgy battery - someone can(and will) correct me if I am wrong, BUT, dont swap battery types - from memory the Ni-mh and ni-cads have different charging requirements and you could cook the battery if you change types.

You should be ok putting a larger capacity battery in the phone though - Might take a little longer to charge initially - but then they just get small top ups from then. Also - you would have longer talking time.





Nothing is impossible for the man who doesn't have to do it himself - A. H. Weiler


 
 
 
 

Trade NZ and US shares and funds with Hatch (affiliate link).
Goosey
2792 posts

Uber Geek

Subscriber

  #837941 17-Jun-2013 09:39
Send private message

Pop into DSE or Harvey Norman, they usually have a range of these batteries.
If all else fails, Uniden NZ website sell batteries.

As someone else mentioned, battery price vs new phone...
Im sure you could find a non branded option on trademe

qwerty7

434 posts

Ultimate Geek
Inactive user


  #837951 17-Jun-2013 10:02
Send private message

am aware that new phones are not much more expensive but my phone has an inbuilt answering machine which means new battery is definitely the cheaper option



ubergeeknz
3344 posts

Uber Geek

Trusted
Vocus

  #837953 17-Jun-2013 10:04
Send private message

I got some from dx.com for a few bucks to replace the batteries in my old uniden, I needed 2 sets and ordered 3 which was good as one didn't work (I never investigated).  These are likely the same ones you would order from Trademe.

Just watch out for the dimensions, the capacity stated will be different in most cases from your factory battery (and fairly meaningless in terms of actual capacity).

It should be OK to swap them out for NiMH if you can find a pack the right size, you will get more capacity and the charging requirements are very similar.  I have seen people say you're not supposed to trickle charge NiMH but in reality a low current trickle doesn't seem to do them any harm, and if you actually use your phone regularly it's unlikely that they will be sitting in a full charged state very much.

qwerty7

434 posts

Ultimate Geek
Inactive user


#839165 19-Jun-2013 11:28
Send private message

Cr*p I took the case of the phone off to grind a bit of plastic out so the battery would fit. Decided to plug in the battery with the case off. Apparently the plug fits just fine in the reverse polarity position. I don't think the smoke is going back in. 

HowickDota
420 posts

Ultimate Geek


  #839182 19-Jun-2013 11:43
Send private message

There are a ton on ebay,
I've bought battery packs myself from ebay before for a uniden phone and never had any problems with them really.

ubergeeknz
3344 posts

Uber Geek

Trusted
Vocus

  #839203 19-Jun-2013 11:50
Send private message

qwerty7: Cr*p I took the case of the phone off to grind a bit of plastic out so the battery would fit. Decided to plug in the battery with the case off. Apparently the plug fits just fine in the reverse polarity position. I don't think the smoke is going back in. 


Oh yeah, uhh, watch the polarity...



qwerty7

434 posts

Ultimate Geek
Inactive user


  #839215 19-Jun-2013 11:58
Send private message

The case clearly labeled what side was red and black but I had it off. The plug had bumps in to the plug could only fit one way, it thought I had it right, apparently not, turns out it fits both ways. Stupid. 

Create new topic





News and reviews »

Bolt Launches in New Zealand
Posted 11-Jun-2025 00:00


Suunto Run Review
Posted 10-Jun-2025 10:44


Freeview Satellite TV Brings HD Viewing to More New Zealanders
Posted 5-Jun-2025 11:50


HP OmniBook Ultra Flip 14-inch Review
Posted 3-Jun-2025 14:40


Flip Phones Are Back as HMD Reimagines an Iconic Style
Posted 30-May-2025 17:06


Hundreds of School Students Receive Laptops Through Spark Partnership With Quadrent's Green Lease
Posted 30-May-2025 16:57


AI Report Reveals Trust Is Key to Unlocking Its Potential in Aotearoa
Posted 30-May-2025 16:55


Galaxy Tab S10 FE Series Brings Intelligent Experiences to the Forefront with Premium, Versatile Design
Posted 30-May-2025 16:14


New OPPO Watch X2 Launches in New Zealand
Posted 29-May-2025 16:08


Synology Premiers a New Lineup of Advanced Data Management Solutions
Posted 29-May-2025 16:04


Dyson Launches Its Slimmest Vaccum Cleaner PencilVac
Posted 29-May-2025 15:50


OPPO Reno13 Pro 5G Review 
Posted 29-May-2025 15:33


Logitech Introduces New G522 Gaming Headset
Posted 21-May-2025 19:01


LG Announces New Ultragear OLED Range for 2025
Posted 20-May-2025 16:35


Sandisk Raises the Bar With WD_BLACK SN8100 NVME SSD
Posted 20-May-2025 16:29









Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.







Backblaze unlimited backup