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EFB Battery Separator
EFB Battery Separator
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Overview
Specifications
FAQ
1）Tested battery type：6-QW-59
2）Separator type：161×0.8×0.25mm（18 ribs）
3）Assembling：With positive plate enveloped.
4）Cranking performance test：Discharge 10 s at 640 A and record the voltage. After a rest period of 10 s, the battery shall then be discharged at 320 A, the discharge shall be terminated when the battery voltage reaches 6 V.
5）Water loss unit：g/Ah
6）Water loss test method：Charging battery at 14.4V constant voltage in the water bath of 60±2 ℃. The battery weight was measured every 21 days for 84 days.
7）Life cycle test method：VW 75073-2017
Feature
-EFB separators can contribute to reducing the internal resistance of batteries.
-EFB separators can help dissipate heat more effectively during charging and discharging, reducing the risk of thermal runaway and enhancing battery safety.
-EFB separators can contribute to extending the cycle life of batteries.
-EFB separators can be designed to be compatible with various types of battery chemistries, including lithium-ion batteries and other advanced battery technologies.
EFB Battery separator comparison
No.
Item
Unit
BFR NEFBS
Competitor 1
Competitor 2
1
Backweb Thickness
mm
0.266
0.252
0.257
2
Total Oil Content
%
15.7
14.8
15.3
3
ER
mΩ.cm2
56
54
78
4
Porosity
%
64.2
59.2
58.1
5
CMD
%
499
453
348
EFB separator C20 and CCA testing data
No.
Item
Specification
BFR NEFBS
Competitor 1
1
C20
≥59Ah
66
66
2
CCA
≥7.5V
7.8
7.7
≥9.0V
9.6
9.5
≥130S
199
195
EFB separator water loss testing data
No.
Time
VW Specification
BFR NEFBS
Competitor 1
Battery 1
Battery 2
Battery 3
1
21 days
-
0.56
0.76
0.73
2
42 days
≤3
1.05
1.17
1.14
3
63 days
-
1.43
1.59
1.58
4
84 days
≤5 Tropical Region）
2.13
2.19
2.20
EFB separator data after water loss test after 84 days
No.
Item
Unit
BFR NEFBS
Competitor 1
Competitor 2
1
ER
mΩ.cm2
56
54
78
2
Electrical Resistance after battery water loss test
mΩ.cm2
65
68
94
3
CMD
%
499
453
348
4
CMD after battery water loss test
%
297
200
190
EFB separator life cycle testing data
No.
Item
Specification
BFR
NEFBS
Competitor 1
1
（26℃）17,5% DoD
≥18
18
18
2
（60℃）17,5% DoD
≥12
12
12
3
（40℃）50% DoD
≥240
240
240
4
（75℃）Cell connector test
≥10
11
10
Dynamic current charging acceptance
No.
Dynamic current charging acceptance
Specification
BFRNEFBS
1
90%SOC：1s
≥29.5A
41.0
2
90%SOC：60s
≥23.6A
30.7
3
80%SOC：1s
≥59.0A
61.8
4
80%SOC：60s
≥35.4A
38.0
5
70%SOC：1s
≥88.5A
106.3
6
70%SOC：60s
≥47.2A
66.8
7
60%SOC：1s
≥118.0A
118.0
8
60%SOC：60s
≥59.0A
66.7
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