A.B.S. (UL94-HB) , Flammability resistance of UL94-V2 can be available upon request. Dimensions. (12V5.5Ah) o. 13.7 to 13.9 VDC/unit Average at 25 C. 1.65 A.
RT 1255 is a general purpose battery with 5 years floating design life , meet with IEC, JIS standard .With heavy duty grid, thickness plates, special additives, RT series battery have long and reliable standby service life.
Specification Cells Per Unit
6
Voltage Per Unit
12
Capacity
5.5Ah@20hr-rate to 1.75V per cell @25 oC
Weight
Approx. 1.70 Kg
Max. Discharge Current
55 A (5 sec)
Internal Resistance
Approx. 35 mΩ
Operating Temperature Range
Discharge: -20 C ~60 C Charge: 0 oC~50 oC Storage: -20 oC~60 oC
Normal Operating Temperature Range
25 oC±5 oC
Float charging Voltage
13.7 to 13.9 VDC/unit Average at 25 oC
Recommended Maximum Charging Current Limit
1.65 A
Equalization and Cycle Service
14.6 to 14.8 VDC/unit Average at 25 oC
Self Discharge
RITAR Valve Regulated Lead Acid (VRLA) batteries can be stored o for more than 6 months at 25 C. Self-discharge ratio less than 3% per month at 25 oC. Please charge batteries before using.
Terminal
Faston Tab 187(F1)/Faston tab 250(F2)
Constainer Material
A.B.S. (UL94-HB) , Flammability resistance of UL94-V2 can be available upon request.
o
o
Dimensions Unit: mm
Dimension: 90(L)×70(W)×107(H)
Constant Current Discharge Characteristics : A(25 oC) F.V/Time
5MIN
10MIN
15MIN
30MIN
1HR
2HR
3HR
4HR
5HR
8HR
10HR
20HR
9 .60 V
2 2.3 6
14 .6 6
11 .4 9
6 .4 52
3 .83 4
2 .20 8
1 .5 0 0
1.2 0 1
0.9 9 7
0 .6 35
0 .5 50
0 .30 9
1 0.0 V
2 1.5 6
14 .3 0
11 .1 2
6 .3 69
3 .72 9
2 .16 3
1 .4 7 3
1.1 8 4
0.9 8 0
0 .6 33
0 .5 44
0 .29 7
1 0.2 V
2 0.2 9
13 .5 9
10 .8 2
6 .2 72
3 .69 4
2 .14 0
1 .4 6 0
1.1 7 2
0.9 7 0
0 .6 27
0 .5 36
0 .29 2
1 0.5 V
1 8.2 4
12 .7 1
10 .2 0
6 .0 99
3 .62 1
2 .11 2
1 .4 4 7
1.1 6 1
0.9 5 8
0 .6 21
0 .5 33
0 .28 3
1 0.8 V
1 6.3 4
11 .8 5
9.6 2 5
5 .8 97
3 .55 6
2 .09 5
1 .4 3 0
1.1 5 5
0.9 4 8
0 .6 19
0 .5 24
0 .26 7
1 1.1 V
1 4.3 0
10 .8 6
8.8 8 0
5 .6 73
3 .46 0
2 .01 1
1 .4 0 2
1.1 4 5
0.9 3 8
0 .6 14
0 .5 16
0 .26 2
Constant Power Discharge Characteristics : W(25 oC) F.V/Time
5MIN
10MIN
15MIN
30MIN
1HR
2HR
3HR
4HR
5HR
8HR
10HR
20HR
9 .60 V
2 35 .3
15 6 .0
12 3 .0
7 3 .85
4 4 .5 1
2 5.7 6
1 7.5 4
14 .2 1
11 .8 0
7 .6 04
6 .5 86
3 .69 8
1 0.0 V
2 29 .1
15 2 .7
12 1 .3
7 3 .08
4 3 .8 6
2 5.5 4
1 7.5 0
14 .1 7
11 .7 4
7 .5 75
6 .5 25
3 .56 6
1 0.2 V
2 18 .0
14 6 .7
11 9 .7
7 2 .45
4 3 .5 4
2 5.3 8
1 7.4 4
14 .0 6
11 .6 3
7 .5 18
6 .4 63
3 .50 1
1 0.5 V
1 98 .9
14 0 .6
11 3 .4
7 0 .97
4 2 .9 5
2 5.1 7
1 7.3 7
13 .9 3
11 .4 9
7 .4 54
6 .3 95
3 .40 2
1 0.8 V
1 79 .5
13 1 .5
10 7 .2
6 9 .29
4 2 .2 5
2 4.9 6
1 7.1 6
13 .8 8
11 .3 7
7 .4 22
6 .2 98
3 .20 4
1 1.1 V
1 58 .3
12 2 .5
10 0 .9
6 7 .39
4 1 .4 6
2 4.1 0
1 6.8 3
13 .7 4
11 .2 6
7 .3 70
6 .2 04
3 .15 3
All mentioned values are average values.
12V5.5Ah
RT 1255
Storage characteristic 10
100
8
Capacity (%)
6 Life Expectancy (years)
Supplementary charge required (Carry out supplementary charge before use if 100% capacity is requires)
0℃
4
2
80 10℃
Supplementary charge required before use. This supplementary charge will help to recover the capacity and should be made as early as possible.
60 20℃
40
30℃
40℃
Supplementary charge may often fail to recover the capacity. The battery should never be left standing till this state is reached
20 0 0
10
20
30
40
4
2
50
6
8
Storage Time (months)
Battery Temperature （℃）
Charge characteristic Curve for standby use 15
7.5
Discharge characteristic Curve
5.0
120
0.24
100
0.20
13
6.5
4.3
12
6.0
4.0
11
5.5
3.7
10
5.0
3.3
Chcrge Voltage
80 ① Discharge 100%（0.05CA×20h） 50%（0.05CA×10h） ② Charge Chcrge Voltage2.275V/C Charge Current0.1CA ③ Temperature 25℃
60
40
0.16
0.12
0.08
Terminal Voltage (V)
4.7
Charge Current (CA)
7.0
Charge Volume (%)
Charge Voltage（V）
Chcrge Volume
14
Supplementary charge and storage guidelines
10 12 14 16 18 20 22 24
13
6.5
4.3
12
6.0
4.0
11
5.5
3.7
0.05C
10
5.0
3.3
9
4.5
3.0
0.62C 1C
3C
20
0.04
0
0
0.093C
0.16C 0.35C
Charge Current
9
4.5
3.0 0
2
4
6
8
0.6
1.2
3
6
12
30
1
2
Charge Time（h）
5
10
20
24
Hr
min
10 12 14 16 18 20 24 28
Discharge Time
Capacity Factors With Different Temperature Battery Type
-20℃
-10℃
0℃
5℃
10℃
20℃
25℃
30℃
40℃
45℃
GEL 6V&12V Battery 2V
50%
70%
83%
85%
90%
98%
100%
102%
104%
105%
60%
75%
85%
88%
92%
99%
100%
103%
105%
106%
AGM 6V&12V Battery 2V
46%
66%
76%
83%
90%
98%
100%
103%
107%
109%
55%
70%
80%
85%
92%
99%
100%
104%
108%
110%
Maintenance & Cautions
Discharge Current VS. Discharge Voltage Final Discharge Voltage V/cell
1.75V
Discharge Current (A)
（A）≤0.2C
1.60V
1.70V
Float Service: ※ Every month, recommend inspection every battery voltage.
0.2C＜（A）＜1.0C
（A）≥1.0C
Charge the batteries at least once every six months, if they are stored at 25 oC. Charging Method:
Equalization charge method: Discharge: 100% rate capacity discharge. Charge: Max. current 0.3CA, constant voltage 2.4-2.45V/Cell charge 24h.
Constant Voltage
-0.2Cx2h+2.4~2.45V/Cellx24h,Max. Current 0.3CA
Constant Current
-0.2Cx2h+0.1CAx12h
Fast
-0.2Cx2h+0.3CAx4.0h
SHEN ZHEN RITAR POWER CO.,LTD. URL:www.ritarpower.com
※ Every three months, recommend equalization charge for one time.
※ Effect of temperature on float charge voltage: -3mV/℃/Cell. ※ Length of service life will be directly affected by the number of discharge . cycles, depth of discharge, ambient temperature and charging voltage.
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