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.


Morgenmuffel

631 posts

Ultimate Geek

Lifetime subscriber

#152290 22-Sep-2014 19:05
Send private message

Hi All


Need to replace batteries in rechargeable razor, they look like AA possibly slightly shorter, there is absolutely no useful info on them, they are nicads, and they are not easy to get at when the razor is assembled.


So i am guessing i'll should stick with ni-cads as they are charged within the razor and nicads don't mind overcharging as much as other rechargeables do?
Do they still make Ni-Cads and where would I get them from

Thanks 





'We love to buy books because we believe we’re buying the time to read them.' WARREN ZEVON


Create new topic

Stu

Stu
Hammered
8334 posts

Uber Geek

Moderator
ID Verified
Trusted
Lifetime subscriber

  #1134010 22-Sep-2014 19:08
Send private message

They look like standard Ni-Cads. Jaycar used to stock them and probably still do. Some shavers need batteries with solder tabs or fly leads but yours just look like stock batteries.

Even Noel Leeming etc should still sell them? Not that I've tried there personally.




People often mistake me for an adult because of my age.

 

 

Keep calm, and carry on posting.

 

 

Referral Links: Sharesies - Backblaze

 

Are you happy with what you get from Geekzone? If so, please consider supporting us by subscribing.

 

No matter where you go, there you are.




nutbugs
269 posts

Ultimate Geek

Lifetime subscriber

  #1134384 23-Sep-2014 10:38
Send private message

I have purchased replacement shaver batteries from these guys in the past.

http://www.abtecparts.co.nz/

Worked well for me - just needed the model of the shaver.

Good luck! :)

Niel
3267 posts

Uber Geek

Trusted

  #1134846 23-Sep-2014 19:17
Send private message

Bunnings.  You still get NiCd for garden lights.  But you can also use NiMH.  Both are equally susceptible to over charging.  For both the manufacturers say there are no issues with over charging, but that is regarding swelling/leaking/exploding.  It is not regarding reliability or cycle life or retaining capacity.

The difference is NiMH is "green" and there is legislation to use "green" components for all products with some exceptions (which just has more time to migrate due to their safety/risk nature).

NiMH cycle life is 300x, NiCd is 500x.  NiMH has a higher series resistance, but with higher capacity the relative series resistance is lower.  NiCd can have the same capacity as NiMH, but they stopped developing it due to being phased out.

There is no such thing as memory effect any more, it was solved in the 80's.  There is now a different effect that applies to all Ni-based batteries which is reversible by slowly discharging over 20-40 hours, and is not a permanent memory effect.  Ni-based batteries fail because they get constantly charged, better to charge for 1-2 days when running low instead of 24/7.




You can never have enough Volvos!




RUKI
1402 posts

Uber Geek


  #1137432 25-Sep-2014 13:06
Send private message

Alternative is:
just take those batteies out, and power device from 2.4 Volt power supply. Insatall small connector on the body of a shaver.
LM317 with couple of resistors will convert 12V from PC Power Supply or any other 12V 1A adaptor (like those used for routers) into required voltage.
LM317 will need heatsink and cooling fan. Use small plastic box to put that stuff in it. I used box from another power adaptor and silent 12v fan from PC.

Using that solution for more than 10 years now as battery in mine (was 1 x 1.2V)  had died ages ago.

Note: LM-317 can do as  low as 1.25V. With your 2.4 Volts and possible conversion from say 5VDC from PC - you may not even need the fan.

Another thought - you may try at your own risk to power it up from 3.3V PC power supply.

I power screwdriver rated at 3.6V (3x1.2NiMH inside just died) from 5VDC PC Power Supply without voltage conversion - works absolutely fine and power cordless drill (not cordless anymore) from 12 rail on PC power supply.

If I had to buy batteries for all those toools - that will cost me.
Because those devices are all used indoors I did not find any inconvenience of having a wire attached (via plug).
3.5mm receptacle - you can take out of the modem/router or buy for $1.5 - those are easier to install. Wires with the plug - from power supplies - from routers/modems 








Toyota / Lexus Hybrid and EV Battery Expert Battery Test & Repair 

 

 


Create new topic





News and reviews »

Air New Zealand Starts AI adoption with OpenAI
Posted 24-Jul-2025 16:00


eero Pro 7 Review
Posted 23-Jul-2025 12:07


BeeStation Plus Review
Posted 21-Jul-2025 14:21


eero Unveils New Wi-Fi 7 Products in New Zealand
Posted 21-Jul-2025 00:01


WiZ Introduces HDMI Sync Box and other Light Devices
Posted 20-Jul-2025 17:32


RedShield Enhances DDoS and Bot Attack Protection
Posted 20-Jul-2025 17:26


Seagate Ships 30TB Drives
Posted 17-Jul-2025 11:24


Oclean AirPump A10 Water Flosser Review
Posted 13-Jul-2025 11:05


Samsung Galaxy Z Fold7: Raising the Bar for Smartphones
Posted 10-Jul-2025 02:01


Samsung Galaxy Z Flip7 Brings New Edge-To-Edge FlexWindow
Posted 10-Jul-2025 02:01


Epson Launches New AM-C550Z WorkForce Enterprise printer
Posted 9-Jul-2025 18:22


Samsung Releases Smart Monitor M9
Posted 9-Jul-2025 17:46


Nearly Half of Older Kiwis Still Write their Passwords on Paper
Posted 9-Jul-2025 08:42


D-Link 4G+ Cat6 Wi-Fi 6 DWR-933M Mobile Hotspot Review
Posted 1-Jul-2025 11:34


Oppo A5 Series Launches With New Levels of Durability
Posted 30-Jun-2025 10:15









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.