SOLUTIONS

SMF Automotive Batteries

Western Electrical SMF automotive batteries for cars and trucks.jpg

THE RIGHT POWER FOR THE RIGHT APPLICATION

When it comes to starting power requirements for vehicles, superior starting performance, consistent output, and absolute reliability are always essential - and that is exactly what you get from the Western Electrical SMF (Sealed Maintenance Free) automotive battery series, a tried and trusted choice in the aftermarket.

A trustworthy, maintenance-free choice offering an excellent combination of value and cost effectiveness, the SMF automotive battery series is a real power all-rounder and the best-selling replacement parts battery in the aftermarket - no doubt due to its dependable power at a price that doesn't cost the earth.

Built on years of technological innovation and continuous improvement, this sealed maintenance free battery series offers an extensive range of models to suit most vehicles on today's market - whether for regular cars, buses, heavy-duty trucks, or construction and agricultural machinery.

SPECIFICATIONS

JIS StandardJapanese standard specification tableDIN StandardGerman standard specification tableBCI StandardAmerican standard specification table
JIS StandardTech DrawingFAQs
Serial No.Size GroupBattery Model No.VoltageCapacityCCADimension (mm±2)Cell Layout (Polarity)Terminal TypeBase Hold Down
(V)Ah(@20HR)A(@-18°C)LWHTH
1B20NS40-32B20R12323001951272002201 (+ -)BB0
2B20NS40L-32B20L12323001951272002200 (- +)BB0
3B20NS40Z-36B20R12363201951272002201 (+ -)BB0
4B20NS40ZL-36B20L12363201951272002200 (- +)BB0
5B20NS40ZS-36B20RS12363201951272002201 (+ -)AB0
6B20NS40ZLS-36B20LS12363201951272002200 (- +)AB0
7B24N40-50B24R12403502371272002201 (+ -)BB0
8B24N40L-50B24L12403502371272002200 (- +)BB0
9B24N40S-50B24RS12403502371272002201 (+ -)AB0
10B24N40LS-50B24LS12403502371272002200 (- +)AB0
11B24NS60-46B24R12454202371272002201 (+ -)BB0
12B24NS60L-46B24L12454202371272002200 (- +)BB0
13B24NS60S-46B24RS12454202371272002201 (+ -)AB0
14B24NS60LS-46B24LS12454202371272002200 (- +)AB0
15D2355D23R12605002311732002201 (+ -)AB1
16D2355D23L12605002311732002200 (- +)AB1
17D2375D23R12655402311732002201 (+ -)AB1
18D2375D23L12655402311732002200 (- +)AB1
19D2380D23R12705802311732002201 (+ -)AB1
20D2380D23L12705802311732002200 (- +)AB1
21D26N50-48D26R12504502581722002201 (+ -)AB1
22D26N50L-48D26L12504502581722002200 (- +)AB1
23D26N50Z-55D26R12605002581722002201 (+ -)AB1
24D26N50ZL-55D26L12605002581722002200 (- +)AB1
25D26NS70-65D26R12655402581722002201 (+ -)AB1
26D26NS70L-65D26L12655402581722002200 (- +)AB1
27D26NX110-5(80D26R)12705602581722002201 (+ -)AB1
28D26NX110-5L(80D26L)12705602581722002200 (- +)AB1
29D31N70-65D31R12705603051722002201 (+ -)AB1
30D31N70L-65D31L12705603051722002200 (- +)AB1
31D31N70Z-75D31R12756003051722002201 (+ -)AB1
32D31N70ZL-75D31L12756003051722002200 (- +)AB1
33D31NX120-7(95D31R)12806403051722002201 (+ -)AB1
34D31NX120-7L(95D31L)12806403051722002200 (- +)AB1
35D31N90-105D31R12907203051722002201 (+ -)AB1
36D31N90L-105D31L12907203051722002200 (- +)AB1
37D31NS100-110D31R121008003051722002201 (+ -)AB1
38D31NS100L-110D31L121008003051722002200 (- +)AB1
39E41N100-95E41R121008004041742012211 (+ -)AB0
40E41N100L-95E41L121008004041742012210 (- +)AB0
41E41N100Z-115E41R121108504041742012211 (+ -)AB0
42E41N100ZL-115E41L121108504041742012210 (- +)AB0
43F51N120-135F51121208605051802102323AB0
44F51N135-145F51121358605051802102323AB0
45G51N150-154G51121509505052202102323AB0
46G51N165-165G511216510005052202102323AB0
47G51N180-195G511218011005052202102323AB0
48G51N190-196G511219011505052202102324AB0
49H51N200-190H511220012005062652152363AB0
50H51N225-245H511222513005062652152363AB0

Note:

1. In the Dimension columns: L = Length, W = Width, H = Height, TH = Total Height.

2. CCA (Cold Cranking Amps) rating is for reference only. CCA is a theoretically calculated average value. Actual performance may vary due to test conditions and standards.

3. Due to the wide range of battery models, if the battery model you are interested in is not shown in the specification chart, please contact us.

4. The specifications are subject to update without notification for reasons of improvement.

5. For further detailed information, please visit our vertical automotive battery site: www.auto-battery.com

Terminal Type

Technical drawing of automotive battery terminal type

Cell Layout (Polarity)

Cell layout polarity diagrams of WESTERN JIS and DIN standard automotive batteries: layouts 0, 1, 2, 3, 4 and 6 with positive and negative terminal positions

Base Hold Down

Technical drawing of automotive battery base hold down

Frequently Asked Questions

What do JIS size groups like B24, D26 and D31 mean?

JIS (Japanese Industrial Standard) size groups classify batteries by case dimensions, polarity layout and terminal type. Groups such as B20, B24, D23, D26, D31, E41, F51, G51 and H51 let you match a replacement battery to the vehicle tray quickly. The WESTERN SMF ENDURANCE range covers all of these groups from 32Ah to 225Ah.


What do the R and L suffixes in JIS model names mean?

The suffix indicates the polarity orientation of the terminals. An R model (for example NS60-46B24R) has the positive terminal on the right, while an L model (NS60L-46B24L) mirrors it to the left. Capacity and dimensions are identical, so choosing the correct orientation prevents stretched or crossed cables during installation.


Are SMF batteries in the JIS range really maintenance free?

Yes. Every battery in this range is sealed at the factory and never requires water topping-up. The sealed construction also reduces the risk of acid leakage and terminal corrosion, which is why the SMF series is a best-selling replacement battery for Japanese and Korean vehicle platforms.


What does the CCA rating measured at -18°C mean?

Cold Cranking Amps is tested at -18°C, the temperature defined by the JIS method. It shows how much starting current the battery delivers while voltage stays high enough to crank the engine. The higher the CCA figure, the more starting reserve a battery offers in cold weather.


Why do some large JIS models show 3 or 4 in the Cell Layout column?

Batteries of 100Ah and above use taller cases with a different internal cell arrangement, so the polarity layout is numbered 3 or 4 instead of the 1 and 0 used by smaller groups. Always compare the marking on your old battery before ordering a large-capacity replacement.

DIN StandardTech DrawingFAQs
Serial No.Size GroupBattery Model No.VoltageCapacityCCADimension (mm±2)Cell Layout (Polarity)Terminal TypeBase Hold Down
(V)Ah(@20HR)A(@-18°C)LWHTH
1LB1DIN40-5404512403202081751751750 (- +)AB13
2LB1DIN40-5404612403202081751751751 (+ -)AB13
3L1DIN44-5445912444002081751901900 (- +)AB13
4L1DIN44-5446412444002081751901901 (+ -)AB13
5LB2DIN45-5451912453802421751751750 (- +)AB13
6LB2DIN45-5452012453802421751751751 (+ -)AB13
7LB2DIN50-5505612504202421751751750 (- +)AB13
8LB2DIN50-5505712504202421751751751 (+ -)AB13
9L2DIN55-5555912554802421751901900 (- +)AB13
10L2DIN55-5556512554802421751901901 (+ -)AB13
11L2DIN60-5606812605002421751901900 (- +)AB13
12L2DIN60-5606912605002421751901901 (+ -)AB13
13L2DIN62-5621912625202421751901900 (- +)AB13
14L2DIN62-5622012625202421751901901 (+ -)AB13
15LB3DIN63-5631812635402761751751750 (- +)AB13
16LB3DIN63-5631912635402761751751751 (+ -)AB13
17LB3DIN68-5682812685702761751751750 (- +)AB13
18LB3DIN68-5682112685702761751751751 (+ -)AB13
19L3DIN66-5661812665402761751901900 (- +)AB13
20L3DIN66-5663312665402761751901901 (+ -)AB13
21L3DIN72-5721912726002761751901900 (- +)AB13
22L3DIN72-5722012726002761751901901 (+ -)AB13
23L3DIN75-5751212756202761751901900 (- +)AB13
24L3DIN75-5751312756202761751901901 (+ -)AB13
25LB4DIN75-5753912756403151751751750 (- +)AB13
26L4DIN80-5804312806803151751901900 (- +)AB13
27L4DIN90-5904312907403151751901900 (- +)AB13
28LB5DIN85-5851512857203531751751750 (- +)AB13
29L5DIN88-5881512887003531751901900 (- +)AB13
30L5DIN88-5882112887003531751901901 (+ -)AB13
31L5DIN100-60038121008003531751901900 (- +)AB13
32L5DIN100-60044121008003531751901901 (+ -)AB13
33D4DIN120-62038121208605101841942204AB0
34D4DIN140-64021121409005101841942204AB0
35D6DIN170-670181217010505102201942204AB0
36D6DIN180-680331218011005102201942204AB0
37D8DIN200-700291220012005052652152364AB0
38D8DIN225-725111222513005052652152364AB0

Note:

1. In the Dimension columns: L = Length, W = Width, H = Height, TH = Total Height.

2. CCA (Cold Cranking Amps) rating is for reference only. CCA is a theoretically calculated average value. Actual performance may vary due to test conditions and standards.

3. Due to the wide range of battery models, if the battery model you are interested in is not shown in the specification chart, please contact us.

4. The specifications are subject to update without notification for reasons of improvement.

5. For further detailed information, please visit our vertical automotive battery site: www.auto-battery.com

Terminal Type

Technical drawing of automotive battery terminal type

Cell Layout (Polarity)

Cell layout polarity diagrams of WESTERN JIS and DIN standard automotive batteries: layouts 0, 1, 2, 3, 4 and 6 with positive and negative terminal positions

Base Hold Down

Technical drawing of automotive battery base hold down

Frequently Asked Questions

How do I read a DIN model number such as DIN60-56068?

In DIN naming, the number after DIN is the nominal capacity in ampere-hours, so DIN60 means 60Ah. The five-digit code that follows identifies the exact case size, polarity and terminal arrangement defined by the DIN standard, which makes cross-referencing against OEM part numbers straightforward for European vehicles.


What is the difference between L and LB size groups in the DIN range?

LB groups (LB1 to LB5) are the low-height versions at 175mm, while L groups (L1 to L5) share the same footprint but are 190mm tall. Both fit the same tray width, so the choice depends on the clearance available under the hood or hold-down frame of the vehicle.


Which vehicles are the large DIN models designed for?

The D4, D6 and D8 size groups from 120Ah to 225Ah are built for heavy-duty applications such as trucks, buses and off-highway equipment, delivering CCA from 860A up to 1300A for reliable cold starting in commercial fleets.


What does Ah(@20HR) in the capacity column mean?

Ah(@20HR) is the nominal capacity, the charge a battery can deliver over a 20-hour discharge at the specified rate. For example, a DIN44 battery supplies 44Ah under this test, which is why the capacity figure appears in the model name of most DIN types.


What do the Base Hold Down codes B0 and B13 mean?

These codes describe the mounting feet cast into the battery base. B0 stands for a flat bottom without hold-down ledges, while B13 identifies the standard ledged foot engaged by most European tray clamps. Matching the code ensures the original hold-down hardware fits without modification.

BCI StandardTech DrawingFAQs
Serial No.Size GroupBattery Model No.VoltageCapacityRCCCADimension (mm±2)Cell Layout (Polarity)Terminal TypeBase Hold Down
(V)Ah(@20HR)(min)A(SAE)LWHTH
1BCI 2424-45012508045025817220022010AB1
2BCI 2424-50012609050025817220022010AB1
3BCI 2424-550126510055025817220022010AB1
4BCI 2424-600127011460025817220022010AB1
5BCI 24R24R-45012508045025817220022011AB1
6BCI 24R24R-50012609050025817220022011AB1
7BCI 24R24R-550126510055025817220022011AB1
8BCI 24R24R-600127011460025817220022011AB1
9BCI 2525-550126010055023117320022010AB1
10BCI 2525-580126511058023117320022010AB1
11BCI 2525-600127011460023117320022010AB1
12BCI 3535-550126010055023117320022011AB1
13BCI 3535-580126511058023117320022011AB1
14BCI 3535-600127011460023117320022011AB1
15BCI 2727-600127011460030517220022010AB1
16BCI 2727-650127513065030517220022010AB1
17BCI 2727-670128014067030517220022010AB1
18BCI 2727-740129015074030517220022010AB1
19BCI 27R27R-600127011460030517220022011AB1
20BCI 27R27R-650127513065030517220022011AB1
21BCI 27R27R-670128014067030517220022011AB1
22BCI 27R27R-740129015074030517220022011AB1
23BCI 3131-750129015575033017221824218TOPB0
24BCI 3131-800129617080033017221824218TOPB0
25BCI 3131-8501210018085033017221824218TOPB0
26BCI 3131-100012105191100033017221824218TOPB0
27BCI 31S31S-750129015575033017221824218STUDB0
28BCI 31S31S-800129617080033017221824218STUDB0
29BCI 31S31S-8501210018085033017221824218STUDB0
30BCI 31S31S-100012105191100033017221824218STUDB0
31BCI 3434-550126010060026017318320310AB1
32BCI 3434-650126611065026017318320310AB1
33BCI 34R34R-550126010060026017318320311AB1
34BCI 34R34R-650126611065026017318320311AB1
35BCI 4747-50012559350024317519019024AB13
36BCI 4747-55012609655024317519019024AB13
37BCI 4747-600126210560024317519019024AB13
38BCI 4848-560126611256027617519019024AB13
39BCI 4848-620127212562027617519019024AB13
40BCI 4848-650127413565027617519019024AB13
41BCI 4848-690127513869027617519019024AB13
42BCI 4949-750128816075035317519019024AB13
43BCI 4949-760129517075035317519019024AB13
44BCI 4949-8501210018085035317519019024AB13
45BCI 5151-42012406342023712720022010AB0
46BCI 5151-48012456848023712720022010AB0
47BCI 51R51R-42012406342023712720022011AB0
48BCI 51R51R-48012456848023712720022011AB0
49BCI 5858-52012467152024217515517526AB8
50BCI 5858-55012507855024217515517526AB8
51BCI 5858-60012569060024217515517526AB8
52BCI 6565-650127513565029519017019010AB8
53BCI 6565-750128515875029519017019010AB8
54BCI 6565-850129518585029519017019010AB8
55BCI 7878-55012557755026017918018017SIDEB1
56BCI 7878-60012669160026017918018017SIDEB1
57BCI 8585-55012569255023117218220210AB1
58BCI 8585-600126210060023117218220210AB1
59BCI 8686-55012569255023117218220211AB1
60BCI 8686-600126210060023117218220211AB1
61BCI 9090-53012559053024317517517524AB13
62BCI 9191-580126010058027617517517524AB13
63BCI 9292-700127513070031517517517524AB13
64BCI 9393-800128514580035317517517524AB13
65BCI 6TN6TN12100998002562672082302AB0
66BCI 6TN6TL12100998002562672082306AB0

Note:

1. In the Dimension columns: L = Length, W = Width, H = Height, TH = Total Height.

2. CCA (Cold Cranking Amps) rating is for reference only. CCA is a theoretically calculated average value. Actual performance may vary due to test conditions and standards.

3. Due to the wide range of battery models, if the battery model you are interested in is not shown in the specification chart, please contact us.

4. The specifications are subject to update without notification for reasons of improvement.

5. For further detailed information, please visit our vertical automotive battery site: www.auto-battery.com

Terminal Type

Technical drawing of automotive battery terminal type

Cell Layout for BCI Standard

Cell layout polarity diagram of WESTERN BCI standard automotive batteries showing positive and negative terminal positions

Base Hold Down

Technical drawing of automotive battery base hold down

Frequently Asked Questions

What does BCI group size mean on the model list?

BCI (Battery Council International) group numbers such as BCI 24, BCI 35 and BCI 65 define the case length, width, height and terminal type of the battery. Any battery built to the same BCI group size fits the same vehicles, which makes the group number the quickest cross-reference for American and Korean applications.


What is RC (Reserve Capacity) in the BCI specification?

Reserve Capacity is the number of minutes a fully charged battery can deliver 25 amps at 27°C before its voltage falls below 10.5V. In this range RC runs from 63 minutes on the compact BCI 51 models up to 191 minutes on BCI 31, showing how long essential loads can keep running if the charging system fails.


What does CCA A(SAE) mean in the BCI table?

CCA measured to the SAE standard is the current a battery delivers for 30 seconds at -18°C while maintaining at least 7.2V. In this range CCA values run from 420A to 1300A. Besides the standard A top terminal, the BCI range also offers TOP, STUD and SIDE terminal variants for commercial and special applications.


What does the number after the dash in BCI model names mean?

In names such as 48-560 or 49-850, the first part is the BCI group number and the second is the CCA rating of that specific model. This makes it easy to compare starting power within the same group: same case size, different performance levels to match your climate and budget.


How do I choose the correct BCI group for my vehicle?

The group number defines the case footprint, terminal position and hold-down type. Measure your old battery or tray and compare it with the Length, Width and Height columns in this table, then confirm the terminal type matches your cable routing. The WESTERN SMF ENDURANCE range covers the most popular groups.

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If you don't find the desired battery size, need customized OEM/ODM power solutions, or have any special requirement, please contact us.