SOLUTIONS

AGM Automotive Batteries

Western AGM SUPREME Absorbent Glass Mat start-stop automotive batteries for cars.jpg

MAX POWER FOR MAXIMUM PERFORMANCE

High-performance, highly equipped vehicles place massive demands on their batteries nowadays, and continuous investment in R&D has allowed Western Electrical to introduce its latest innovative AGM batteries to the car service market.

Featuring superb starting and deep-cycle capability, the Western Electrical AGM Start-Stop car battery series is the perfect solution for cars featuring advanced start-stop technology combined with regenerative braking and additional hybrid fuel-saving technologies. Only specially developed automotive batteries with AGM technology can meet the challenges imposed by these systems.

Compared to traditional batteries, this latest AGM battery series offers greater performance and versatility, and is capable of reliably supplying power to an even wider range of electrical devices.

SPECIFICATIONS

DIN StandardGerman standard specification tableBCI StandardAmerican standard specification table
DIN StandardTech DrawingFAQs
Serial No.Size GroupBattery Model No.VoltageCapacityRCCCADimension (mm±2)Cell Layout (Polarity)Terminal TypeBase Hold Down
(V)Ah(@20HR)(min)A(@-18°C)LWHTH
1L1H4-L1-501250826302081751901900 (- +)AB13
2L2H5-L2-6012601006802421751901900 (- +)AB13
3L3H6-L3-7012701207202781751901900 (- +)AB13
4L4H7-L4-8012801408003151751901900 (- +)AB13
5L5H8-L5-9512951608503531751901900 (- +)AB13
6L6H9-L6-105121051609503941751901900 (- +)AB13

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

What does AGM mean in a car battery?

AGM stands for Absorbent Glass Mat: the electrolyte is held in fine fiberglass separators instead of free-flowing liquid. This gives lower internal resistance, higher charge acceptance and spill-proof construction, which is the key technology behind start-stop vehicles with high electrical loads.


Which vehicles is the AGM DIN range designed for?

The DIN range covers L1 to L6 sizes from 50 to 105 Ah, matching European passenger cars and light commercial vehicles equipped with start-stop, regenerative braking and multiple electronic consumers.


Can an AGM battery be installed in any position?

Yes. Because the electrolyte is fully absorbed in the glass mats, AGM batteries can be mounted in almost any position except upside down, with no risk of acid leakage.


How should an AGM battery be charged?

Use an AGM-compatible smart charger with a maximum charging voltage of 14.4 to 14.8 V at 25°C. Avoid equalization or high-voltage modes designed for flooded batteries, which can dry out the mats.

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 47AGM47-660126010066024217519019024AB13
2BCI 48AGM48-760127012076027817519019024AB13
3BCI 49AGM49-900129516090035317519019024AB13

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

What is a BCI group size?

BCI (Battery Council International) group numbers, such as Group 47, 48 and 49, define case dimensions, terminal type and hold-down so the battery can be matched to the vehicle tray. The AGM BCI range covers these popular European start-stop groups.


Why do AGM batteries deliver higher CCA?

The absorbed electrolyte and tight plate packing reduce internal resistance, allowing the AGM 47, 48 and 49 models to deliver 660 to 900 A of cold cranking current for reliable starts in cold climates and on high-compression engines.


Can I replace an EFB or conventional battery with an AGM battery?

Yes, provided the group size, polarity and dimensions match. AGM is a direct upgrade for start-stop systems and offers greater cycle life than EFB and conventional flooded batteries. Confirm that the vehicle charging voltage is AGM-compatible.


Do AGM batteries require maintenance?

No. AGM batteries are fully sealed and maintenance-free: no water top-up is needed. Keep the terminals clean and check the state of charge periodically for the longest service life.

RELATED BATTERY RANGES

EFB Automotive BatteriesEFB start-stop automotive battery seriesSMF Automotive BatteriesSMF maintenance-free auto battery seriesDry Charged Auto BatteriesDry charged auto battery series

CONTACT US

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