2 VL 34570
Technology
Protection circuit
l Graphite-based negative electrode
l Lithium Cobalt oxide-based positive
electrode
l Electrolyte: organic solvents
l Built-in redundant safety
protections
l Protection against over voltage (resettable)
l Protection against under voltage (resettable)
l Protection against over current during discharge
l End of discharge equalising
l Internal thermistor for temperature detection
l Battery assembled from two
cylindrical VL 34570 cells
in series with an electronic
protection circuit
Typical discharge profiles (1.1 A - C/5 rate) at various temperatures
9.0
8.5
8.0
7.5
7.0
6.5
6.0
5.5
5.0
+ 60°C
+ 20°C
Built-in protection devices ensure
safety in case of:
- 30°C
- 40°C
l Exposure to heat
l Exposure to direct sunlight for
extended periods of time
l Short circuit
l Overcharge
l Overdischarge
0
1
2
3
4
5
6
lꢀShrapnel penetration
Capacity (Ah)
When handling Saft VL batteries:
Charge characteristics at +20°C (C/2 and C/5 rates)
l Do not solder directly to battery
terminals
l Do not disassemble
l Do not remove the protection
circuit
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
100
90
80
70
60
50
40
30
20
10
0
C/2 Volts
C/5 Volts
l Do not incinerate
Transportation and storage
C/2 (2.7 A)
C/5 (1.1 A)
l Store in a dry place at a
temperature preferably not
°
exceeding 30 C
l For long-term storage, keep the
battery preferably within a
0
1
2
3
4
5
6
7
(30 ± 15) % state of charge
Charge time (hours)
Saft
Specialty Battery Group
12, rue Sadi Carnot
93170 Bagnolet - France
Tel.: +33 (0)1 49 93 19 18
Fax: +33 (0)1 49 93 19 69
Doc. No 54080-2-0710
Information in this document is subject to change without notice
and becomes contractual only after written confirmation by Saft.
313, Crescent Street
Published by the Communications Department.
Valdese, NC 28690 - USA
Tel.: +1 (828) 874 41 11
Fax: +1 (828) 879 39 81
Photo credit: Saft.
Société anonyme au capital de 31 944 000
RCS Bobigny B 383 703 873
www.saftbatteries.com
Produced in the UK by Arthur Associates Limited.