Help required with a Toshiba T1000 battery - UK Vintage Radio Repair and Restoration Discussion Forum

paul.brett · 12th Aug 2009, 11:29 am

Can anybody help me with instructions and components to make a replacement battery pack for a Toshiba T1000 laptop?

The original pack consists of 4 x Varta RSH1.4 (KRH 23/43) NiCads rated at 1.2v and 140mA. These seem difficult to obtain.

Can anybody recommend an alternative NiCad, that will still fit into the dimensions taken up by the existing pack and provide the correct output?

Thank-you.

Paul.

Nickthedentist · 12th Aug 2009, 12:36 pm

Hi Paul,

What are the dimensions of the original NiCds? Can you post a pic of them?

Nick.

paul.brett · 12th Aug 2009, 12:57 pm

No pictures at the moment, but here are the specs:

http://www.leocom.kr/CatalogPage/1_0025.pdf (see KRH 23/43)

42.2mm x 23mm x approx 92mm (4 batteries make the pack)

Paul.

KeithsTV · 12th Aug 2009, 12:57 pm

CPC do a range of Nicad and NiMh batteries in sizes other than the standard AA, C & D sizes. They may have one that is similar in size. Th chances are that the capacity will be greater than the original so it may need a longer charge time.

Keith

Vicboduk · 12th Aug 2009, 1:47 pm

Hi Paul, I think the size is known as Sub C or CS cells. They are usually tagged for making up battery packs.
RS list these; http://uk.rs-online.com/web/search/s...77927&x=30&y=6 which look close to your originals.

paul.brett · 12th Aug 2009, 6:55 pm

Thanks for the RS link. That looks like it's exactly what I need. Now I just need to wait for some spare cash to make the purchase.

Paul.

Pamphonica · 18th Aug 2009, 11:27 pm

http://www.strikalite.co.uk/ are incredibly helpful, and reasonably priced. They will make up custom NiCd or NiMH battery packs to your spec, including welding of cells and shrink-wrapping. This HAS to be easier (and safer) than trying to solder tagged cells into a pack.
No connection by the way - just a long-standing company on my "very useful" list!
rgds
Jeremy

paul.brett · 1st Feb 2010, 1:51 pm

I got my dad to solder some standard 'C' size rechargable batteries rated at 2600mAh in a 4 pack, and placed them in the Toshiba instead.

They wouldn't fit in the plastic battery holder, instead they are duck-taped together to form a 4 pack. Dad said the soldering was decidedly dicey, but they seem to work a treat.

I'm very happy to get my T1000 running again.

Paul.

Herald1360 · 4th Feb 2010, 1:49 pm

I could probably dig out an old battery pack of sub Cs that you could break up and resolder. No warranties (express, implied or anything else for that matter), but I have had some use out of them myself for rebatterying dustbusters

Best to give the pack a charge from a bench psu and look for any cells that seem to hold a voltage, break them out (be careful not to short any cells in this process) and try an individual cell discharge test to see what capacity is left!

Let me know if you're interested.....

Chris

12th Aug 2009, 11:29 am	#1
paul.brett Tetrode Join Date: Dec 2005 Location: Wisbech, Cambridgeshire, UK. Posts: 97	Help required with a Toshiba T1000 battery Can anybody help me with instructions and components to make a replacement battery pack for a Toshiba T1000 laptop? The original pack consists of 4 x Varta RSH1.4 (KRH 23/43) NiCads rated at 1.2v and 140mA. These seem difficult to obtain. Can anybody recommend an alternative NiCad, that will still fit into the dimensions taken up by the existing pack and provide the correct output? Thank-you. Paul. __________________ My vintage Computer Museum. Please visit soon!

12th Aug 2009, 12:36 pm	#2
Nickthedentist Dekatron Join Date: Jan 2005 Location: Oxford, UK. Posts: 17,859	Re: Help required with a Toshiba T1000 battery Hi Paul, What are the dimensions of the original NiCds? Can you post a pic of them? Nick.

12th Aug 2009, 12:57 pm	#3
paul.brett Tetrode Join Date: Dec 2005 Location: Wisbech, Cambridgeshire, UK. Posts: 97	Help required with a Toshiba T1000 battery No pictures at the moment, but here are the specs: http://www.leocom.kr/CatalogPage/1_0025.pdf (see KRH 23/43) 42.2mm x 23mm x approx 92mm (4 batteries make the pack) Paul. __________________ My vintage Computer Museum. Please visit soon!

12th Aug 2009, 12:57 pm	#4
KeithsTV Nonode Join Date: Aug 2007 Location: South Bradford, West Yorkshire, UK. Posts: 2,573	Re: Help required with a Toshiba T1000 battery CPC do a range of Nicad and NiMh batteries in sizes other than the standard AA, C & D sizes. They may have one that is similar in size. Th chances are that the capacity will be greater than the original so it may need a longer charge time. Keith

12th Aug 2009, 1:47 pm	#5
Vicboduk Hexode Join Date: Aug 2007 Location: S.W. London, UK. Posts: 416	Re: Help required with a Toshiba T1000 battery Hi Paul, I think the size is known as Sub C or CS cells. They are usually tagged for making up battery packs. RS list these; http://uk.rs-online.com/web/search/s...77927&x=30&y=6 which look close to your originals. __________________ It has to be here... I've just put it down!

12th Aug 2009, 6:55 pm	#6
paul.brett Tetrode Join Date: Dec 2005 Location: Wisbech, Cambridgeshire, UK. Posts: 97	Re: Help required with a Toshiba T1000 battery Thanks for the RS link. That looks like it's exactly what I need. Now I just need to wait for some spare cash to make the purchase. Paul. __________________ My vintage Computer Museum. Please visit soon!

18th Aug 2009, 11:27 pm	#7
Pamphonica Nonode Join Date: Mar 2008 Location: Virginia Water, Surrey, UK. Posts: 2,877	Re: Help required with a Toshiba T1000 battery http://www.strikalite.co.uk/ are incredibly helpful, and reasonably priced. They will make up custom NiCd or NiMH battery packs to your spec, including welding of cells and shrink-wrapping. This HAS to be easier (and safer) than trying to solder tagged cells into a pack. No connection by the way - just a long-standing company on my "very useful" list! rgds Jeremy

1st Feb 2010, 1:51 pm	#8
paul.brett Tetrode Join Date: Dec 2005 Location: Wisbech, Cambridgeshire, UK. Posts: 97	Help required with a Toshiba T1000 battery (Update) I got my dad to solder some standard 'C' size rechargable batteries rated at 2600mAh in a 4 pack, and placed them in the Toshiba instead. They wouldn't fit in the plastic battery holder, instead they are duck-taped together to form a 4 pack. Dad said the soldering was decidedly dicey, but they seem to work a treat. I'm very happy to get my T1000 running again. Paul. __________________ My vintage Computer Museum. Please visit soon! Last edited by Station X; 2nd Feb 2010 at 3:54 pm. Reason: Post moved to reopened thread.

4th Feb 2010, 1:49 pm	#9
Herald1360 Dekatron Join Date: Feb 2007 Location: Leominster, Herefordshire, UK. Posts: 16,536	Re: Help required with a Toshiba T1000 battery I could probably dig out an old battery pack of sub Cs that you could break up and resolder. No warranties (express, implied or anything else for that matter), but I have had some use out of them myself for rebatterying dustbusters Best to give the pack a charge from a bench psu and look for any cells that seem to hold a voltage, break them out (be careful not to short any cells in this process) and try an individual cell discharge test to see what capacity is left! Let me know if you're interested..... Chris