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SAkieran (Electrical) (OP)
3 Mar 11 9:17
i have been asked to look into this and see if it exists. i have researched and only found stationary vented lead acid. i haven't come across stationary vented Nicad. i am looking for a descriptive definition but it difficult to find, can anyone assist me regarding this. thanks in advance
BrianG (Military)
3 Mar 11 9:39
'Vented' NiCad batteries immediately suggests high capacity 'wet' cell types. Smaller NiCad batteries are unvented, except for the safety valve. Like lead-acid wet cells, banks of NiCad are topped up with distilled water, but are alkaline as the electrolyte is a dilute potassium hydroxide solution. Maintenence equipment should therfore be kept separate from that used for any lead-acid batteries that may be installed at the same location.  
ScottyUK (Electrical)
3 Mar 11 11:33
Check out SAFT and Hoppecke as a couple of manufacturers.
  

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If we learn from our mistakes I'm getting a great education!
 

raithrovers1 (Industrial)
4 Mar 11 14:12
Alcad produce a range called Vantage and Vantex. These are recombination Nicad cells that they claim do not require topping up during their 20 year life if charged at the correct voltage and temperature.
See www.alcad.com

UPS engineer http://www.calibrepower.co.uk

ScottyUK (Electrical)
4 Mar 11 16:26
SAFT make the Uptimax and Hoppecke the FNC-VR which use similar recombination technology to achieve similar topping up intervals. Apologies to Alcad, I was trying to think of their name yesterday!
  

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If we learn from our mistakes I'm getting a great education!
 

Warpspeed (Automotive)
5 Mar 11 4:16
These are all excellent batteries.
I hope your pockets are deep.
SAkieran (Electrical) (OP)
8 Apr 11 4:06
I won't be paying, its a client requirement.

thanks for all the answers
ScottyUK (Electrical)
8 Apr 11 9:40
Update - 'alledgedly' SAFT and ALCAD Ni-cads are 'very similar' and are being made in the same works in Sweden. wink
 
  

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If we learn from our mistakes I'm getting a great education!
 

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