2008-11-21 17:35:02
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Home > Technologies > Nickel > Ni-Cd > VT VNT VST - High temperature series


Nickel-Cadmium (Ni-Cd) - VT VNT VST - High temperature series

Rechargeable battery
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Saft VT, VNT and VST high temperature Ni-Cd batteries are perfectly suited to emergency and security equipment applications in compliance with International (IEC 61951), US (UL 924) and Japanese (JISC 8705) standards.

They are designed to accept a permanent charge (C/20 to C/15) for a minimum of four years in high-temperature environments (up to +40°C / 104°F). Higher-end versions of the cells, such as "U" and "70" models, can even withstand a constant temperature of up to +55°C / 131°F with a similar life expectancy when permanently charged. The new VNT series benefits from innovative PNE (Plastic-bonded Nickel Electrode) technology - a new positive electrode that offers improved energy density.

Main Applications

  • emergency lighting units (exit signs, emergency lighting fixtures, conversion kits)
  • UPS & back-up systems
  • security devices (alarms, cable networks, …)

 

Benefits

  • high energy
  • excellent life at high temperature
  • excellent life in permanent charge
  • very good charge efficiency at high temperature
  • robust design
  • compliance with most emergency lighting standards
  • good storage capability
  • zero maintenance

 
Download literature
  • Handbook
  • Data sheet
  • MSDS
Technical characteristics

 Nominal voltage : 1.2 Volt / cell

  VT AA VT Cs VT Cs 1500 VT Cs 1500 U (3) VT Cs 1600
Size AA Cs Cs Cs Cs
IEC Capacity at 0.2 rate Typical (mAh) 700 1350 1650 1650 1750
Minimum (mAh) 600 1200 1500 1500 1600
Standard charge Current (mA) 60 120 150 150 160
Time (h) 16 16 16 16 16
Permanent charge Current (mA) 30 60 75 75 60
Time (h) - - - - -
Internal impedance (mOhm) 45 12 7 8 7
Diameter (mm) 14.0 22.2 22.2 22.2 22.2
Height (mm) 50.2 42.2 42.2 42.2 42.2
Approx weight (g) 26 45 47 48 49
           

 

  VT C 2500 VT 1/2 D VT D (1) VT D L (1) VT D 70 (2&3)
Size C 1/2 D D D  D
IEC Capacity at 0.2 rate Typical (mAh) 2700 2500 4300 4300  1500
Minimum (mAh) 2500 2200 4000 4000  4000
Standard charge Current (mA) 250 220 400 400  400
Time (h) 16 16 16 16  16
Permanent charge Current (mA) 125 110 200 200  200
Time (h) - - - -  -
Internal impedance (mohm) 6 10 6 6  6
Diameter (mm) 25.3 32.2 32.2 32.2  32.2
Height (mm) 49.5 36.8 60.3 58.6  60.3
Approx weight (g) 75 80 120 120  128
           

 

  VT D U (3) VT F (1) VT F 70 (3) VST AA VNT Cs
Size D F F AA Cs
IEC Capacity at 0.2 rate Typical (mAh) 4700 7500 7700 860 1670
Minimum (mAh) 4100 7000 7000 800 1600
Standard charge Current (mA) 400 700 700 80 160
Time (h) 16 16 16 16 16
Permanent charge Current (mA) 200 350 350 40 80
Time (h) - - - - -
Internal impedance (mOhm) 5 5 5 30 10
Diameter (mm) 32.2 32.2 32.2 14.0 22.2
Height (mm) 58.6 91.1 89.2 49.2 42.2
Approx weight (g) 136 196 196 26 45
           

 

Under development VNT C VNT D    
Size C D    
IEC Capacity at 0.2 rate Typical (mAh)   4250    
Minimum (mAh) 2500 4000    
Standard charge Current (mA)   400    
Time (h) 16 16    
Permanent charge Current (mA)   200    
Time (h) - -    
Internal impedance (mohm) 12 8    
Diameter (mm) 25.3 32.2    
Height (mm) 49.5 58.6    
Approx weight (g) 75 115    
         

(1) up to +40°C temperature environment
(2) also available with a low top
(3) up to +55°C temperature environment


Note: Specifications are subject to modification without notice for further improvement.

Data in this page is subject to change without notice and becomes contractual only after written confirmation by Saft.