Datasheet
F.V/Time 5 min 10 min 15 min 20 min 30 min 45 min 1h 2h 3h 4h 5h 6h 8h 10h 20h
1.85V/cell 2.29 1.75 1.45 1.26 0.97 0.716 0.603 0.357 0.297 0.227 0.185 0.161 0.130 0.108 0.0594
1.80V/cell 3.07 2.24 1.76 1.49 1.15 0.833 0.676 0.390 0.300 0.242 0.199 0.172 0.137 0.112 0.0600
1.75V/cell 3.46 2.46 1.92 1.60 1.19 0.864 0.707 0.404 0.306 0.248 0.204 0.177 0.140 0.115 0.0606
1.70V/cell 3.81 2.69 2.05 1.68 1.24 0.899 0.729 0.414 0.315 0.254 0.209 0.181 0.142 0.117 0.0617
1.65V/cell 4.20 2.90 2.18 1.78 1.31 0.921 0.746 0.420 0.328 0.263 0.215 0.185 0.144 0.119 0.0625
1.60V/cell 4.63 3.15 2.33 1.90 1.38 0.960 0.754 0.438 0.338 0.271 0.222 0.189 0.145 0.121 0.0629
F.V/Time 5 min 10 min 15 min 20 min 30 min 45 min 1h 2h 3h 4h 5h 6h 8h 10h 20h
1.85V/cell 4.18 3.24 2.71 2.37 1.85 1.38 1.16 0.693 0.544 0.444 0.363 0.316 0.256 0.214 0.118
1.80V/cell 5.55 4.09 3.23 2.76 2.15 1.59 1.30 0.751 0.582 0.471 0.388 0.337 0.271 0.221 0.119
1.75V/cell 6.12 4.43 3.49 2.94 2.22 1.63 1.35 0.776 0.591 0.480 0.397 0.346 0.275 0.226 0.120
1.70V/cell 6.56 4.71 3.67 3.07 2.29 1.69 1.39 0.794 0.606 0.492 0.406 0.352 0.278 0.231 0.122
1.65V/cell 7.13 5.04 3.87 3.23 2.40 1.72 1.41 0.801 0.629 0.507 0.416 0.359 0.282 0.235 0.123
1.60V/cell 7.68 5.35 4.08 3.41 2.52 1.78 1.42 0.831 0.645 0.521 0.428 0.365 0.284 0.237 0.124
Ultracell (UK) Ltd | Vesty Business Park | Vesty Road | Liverpool | L30 1NY | United Kingdom
Tel: +44 (0) 151 523 2777 Fax: +44 (0) 151 523 0855 Email: info@ultracell.co.uk
www.ultracell.co.uk
ISO9001
2
ALL DATA IS SUBJECT TO CHANGE WITHOUT NOTICE
Float Charging Characteristics
Constant Current Discharge (Amperes) at 25°C (77°F)
Discharge Characteristics
Effect of Temperature on Long Term Float LifeTemperature Effects in Relation to Battery Capacity
Self Discharge CharacteristicsCycle Life in Relation to Depth of Discharge
Constant Power Discharge (Watts) at 25°C (77°F)
2C
1C 0.628C
0.4C
0.207C
0.093C 0.05C
Temperature:25°C(77°F)
Min
Discharge Time
h
1 2 4 6 8 10 20 40 60 2 4 6 8 10 20
3C
2.67
3.00
3.33
3.66
4.00
4.33
Terminal Voltage (V)
4V
Battery
(V)
Charging Time (hours)
0 4 8 12 16 20 24 28 32 36 40
5.5
6.0
6.5
7.0
7.5
Charging
Voltage
(V)0.10 CA -2.25 V/cell temperature 25°C
Charged Volume
Charge Voltage
(Constant 2.25v/cell)
After 50% Discharge
After 100% Discharge
Charging Current
0.05
0.10
0.15
0.20
0.25
Charging
Current
(XCA)
0
120
Charge
Volume
%
110
100
90
80
70
60
50
40
30
20
10
0
3
.0
CA
2
.
0
C
A
1
.
0
C
A
0
.
2
C
A
0
.
1
C
A
0
.
0
5
C
A
Temperature (°C)
-20 -10 0 10 20 30 40
50
0
20
40
60
80
100
120
Capacity (%)
Battery Temperature
20
68
30
86
40
104
50
122
°C
°F
0.5
1
2
3
4
5
6
8
10
Life Expectancy (year)
Charging voltage:
2.25V/cell
0 200 400 600 800 1000 1200
Number of Cycles
0
20
40
60
80
100
120
Capacity(%)
100%
DOD
50%
DOD
30%
DOD
Testing condition
Discharging:current 0.17C (FV 1.7V/cell);
Charging:current 0.25C max, voltage 2.45V/cell;
Charging volume:125% of discharged capacity.
Ambient Temperature:
25°C (77°F)
8
10
12
0
4
6
60
80
100
0 2
20
40
0
25 C
0
30 C
0
40 C
0
10 C
A
B
C
A
B
C
No supplementary required
(Carryout supplementary charge before use if 100% capacity is required.)
Supplementary charge required before use. Optional charging way as below:
1. Charged for above 3 days at limited current 0.25CA and constant voltage 2.25V/cell.
2. Charged for above 20 hours at limited current 0.25CA and constant voltage 2.25Vcell.
3. Charged for 8 ~ 10 hours at limited current 0.05 CA.
Supplementary charge may often fail to recover the capacity.
The battery should never be left standing till this is reached.
Storage Time (Months)
Remaining Capacity (%)