SAFT VHT 75CS 1Z 5_CS

VHT 7/5 Cs

High Temperature Series

Saft’s VHT high temperature Ni-MH series are perfectly suited for professional applications
requiring a battery with an exceptional robustness. It is designed to operate in very demanding
environment (from - 40°C to + 85°C).

The VHT 7/5 Cs can be fast charged with a
maximum current of C/3, and offers an
exceptional life duration. The VHT 7/5 Cs
delivers a huge number of full or partial
cycles: 2000 full cycles and even 5000
cycles with 50% DOD (Depth Of Discharge).

To meet customers’ requirements, Saft
provides custom-designed and standardized
battery packs.

For your battery design and system needs,
please contact Saft’s engineers.

Applications

■

Photovoltaic systems

■

Renewable energy storage

■

Tracking

■

Underwater applications

■

Robotics

■

Professional electronics

Main advantages

■

Very large temperature range
(- 40°C to + 85°C)

■

Excellent charge and discharge efficiency
at very low and very high temperature

■

Fast charge (3h)

■

Very high cycle life

■

Superior robustness

Technology

■

Foam positive electrode

■

Plastic bonded metal-hydride negative
electrode

Electrical characteristics

Nominal voltage (V)
Typical capacity (mAh)*
IEC minimum capacity (mAh)*
IEC designation
Impedance at 1000 Hz (mΩ)

* Charge 16 h at C/10, discharge at C/5.

Dimensions

Diameter (mm)
Height (mm)
Top projection (mm)
Top flat area diameter (mm)
Weight (g)

Dimensions are given for bare cells.

Charge conditions Rate

Fast*

* Charge termination required.

Maximum discharge current

Continuous (A) at + 20°C
Peak (A) at + 20°C*

* Peak duration: 0.3 second - final discharge voltage 0.65 volt/cell.
Below 0°C, a cut-off voltage in charge is required (Consult Saft)

Time (h)

3

Temp. (°C)

- 40 to + 85

1.2
4200
4000

HRMT 23/62

20

22.0 ± 0.05

60.0 ± 0.3

0.8 ± 0.2

9.0 min
74

Charge current (mA)

1330

15

130

Temperature range in discharge

- 40°C to + 85°C (C/10 discharge current)

- 20°C to + 85°C (C/4 discharge current)

Storage

Recommended: + 5°C to + 25°C
Relative humidity: 65 ± 5 %

Electrical performances at different temperature

No damage

Operational

Typical performances

For graphs shown, C is the IEC5 capacity.

Dimensions are in mm.

9.0

22.0

0.8

60.0

Autonomy > 75%

(for C/4 discharge current max)

-20 0 20 40 60 10080-40

Temperature (°C)

End of charge cut-off - charge at C/3

1.6

1.5

1.4

1.3

Voltage (V)

1.2

1.1

1.0

0 1 2 3 4

Time (h)

Discharge at C/10 at different temperature after charge at C/10 at different temperature

1.6

1.4

1.2

delta V/V = 0.1%

Data are given for single cells. Please consult
Saft for utilization of cell outside this specification.

Data in this document are subject to change
without notice and become contractual only
after written confirmation by Saft.

Saft

Industrial Battery Group
12, rue Sadi Carnot
93170 Bagnolet - France
Tel. : [phone]
Fax : [phone]
www.saftbatteries.com

Voltage (V)

1.0

0.8

0.6

Charge at C/3 - discharge at 2 A

4.5

4.0

3.5

3.0

2.5

2.0

Capacity (Ah)

1.5

1.0

0.5

0

- 30°C 0°C + 50°C+ 20°C + 70°C- 20°C - 10°C

2 4 6 8 10 120

200 400 600 800 1000 1200 1400 1600 1800 2000 22000

Autonomy (h)

Cycles

Doc No.: 11139-2-0612

Edition: June 2012

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

Saft SAS. Stock capital 31.944.00

RCS Bobigny B 383 703 873

Produced in FR by Soyouzgraphic