Exide ET4B-BS · Motorcycle battery 12V 2Ah 35A AGM
Specifications
| Brand | EXIDE |
|---|---|
| Part number | ET4B-BS |
| Voltage (V) | 12 |
| Capacity (C20) | 2Ah (c20) |
| Capacity (C10) | 2.3Ah (c10) |
| Cold cranking amps (EN) | 35A |
| Technology | AGM |
| Length | 115.00 cm |
| Width | 40.00 cm |
Exide ET4B-BS 12V 2Ah 35A is a sealed motorcycle battery ready to fit, with the JIS reference your mechanic recognises at a glance. Vibration-resistant, keeps voltage during the winter off-season and cranks first time when you take it out for a ride.
Why this motorcycle battery?
- Same JIS referenceas your bike's original — fits first time
- Sealed and ready to useno acid handling, no refills
- Survives winter storageholds charge through long off-season

Motorcycle battery Exide ET4B-BS Moto AGM 2Ah 35A 12V
With 2 Ah at 12 V and 35 A of cold cranking current (EN), the Exide ET4B-BS with AGM technology replaces the original battery of motorcycles, scooters, quads and personal watercraft. Its 115 × 40 × 85 mm and the positive terminal on the right make it the exact replacement for the 2 Ah battery fitted as standard to many motorcycles.
- Sealed and ready to fit, no acid handling.
- AGM: faster recharging and better cycle resistance than a conventional battery.
- Compact and lightweight format.
- Holds its charge through winter storage.
What the Exide ET4B-BS is for
With 2 Ah, the Exide ET4B-BS covers the starting of motorcycles, scooters, quads and personal watercraft. The JIS code on your current battery label is the safest way to confirm equivalence. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 0.90 kg, M13 terminals and B0 hold-down.
The Exide ET4B-BS: Moto AGM range and AGM technology
Within the Exide catalogue, the Moto AGM series groups the references designed for this use. The ET4B-BS is the 2 Ah model of that family, with the same performance as its siblings in other sizes.
AGM means the acid is held in a glass mat instead of floating free. That is why the battery can be installed in the cabin without gases, survives more cycles and recovers its charge quickly.
Size, terminals and hold-down of the Exide ET4B-BS
In terms of format, the Exide ET4B-BS measures 115 × 40 × 85 mm (length × width × height) and weighs 0.90 kg. The positive terminal on the right decides which side the cables end up on: it is the detail that causes most buying mistakes, so check it before ordering. It uses a B0 hold-down and M13 terminals, the system that anchors and connects it in the vehicle. For a direct replacement, the current battery tray must accept these dimensions and the same terminal layout; otherwise adapters will be needed or the hold-down will change.
What Exide does differently
Exide is one of the world's largest battery manufacturers and an original-equipment supplier to many car makers. Its European plants produce starter, industrial and leisure batteries under original-equipment quality controls. We guarantee that every Exide arrives new, charged and with the manufacturer's full warranty.
How to make it last longer
Check the resting voltage before the season (above 12.6 V on a charged battery) and make sure the terminals are clean and tight. Avoid repeated cranking attempts on a cold bike for long: if it does not start on the third try, let the battery rest for a minute.
Manufacturer's warranty
The Exide ET4B-BS comes with the manufacturer's official warranty. The warranty does not cover discharge through prolonged inactivity: if the bike stands for months, use a trickle charger.
Delivery times and returns
Same-day dispatch from our warehouse for in-stock orders placed before 6:00 pm: 24-48 working hours in mainland Spain and Portugal, 3 to 5 days in the islands and the rest of Europe. Returns are accepted for 14 days if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email.
Data sheet
-
BrandEXIDE
-
ReferenceET4B-BS
-
ModelEXIDE MOTO AGM 12V
-
Voltage (V)12
-
Length115.00 cm
-
Width40.00 cm
-
Height85.00 cm
-
Weight0.90 Kgs
-
TechnologyAGM
-
EAN3661024033701
-
Terminal layoutPositive terminal on the right
-
Terminal typeM13
-
Hold-downB0
-
Cold cranking amps (EN)35A
-
Capacity (C20)2Ah (c20)
-
Capacity (C10)2.3Ah (c10)
Specific References
-
EAN133661024033701
-
MPNET4B-BS
Codes and references Exide ET4B-BS
| Brand | Exide · see all Exide batteries |
|---|---|
| Manufacturer range | EXIDE MOTO AGM 12V |
| Manufacturer part number (MPN) | ET4B-BS |
| Also known as | ET4BBS · ET4B BS |
| EAN-13 barcode | 3661024033701 |
| Dimensions (length × width × height) | 115 × 40 × 85 mm (115x40x85) |
Recommended accessories
Frequently asked questions
Is the ET4B-BS model AGM? What does this technology offer?
Yes. The ET4B-BS from Exide uses AGM (Absorbent Glass Mat) technology: a sealed lead-acid battery where the electrolyte is absorbed in a glass-fibre mat. It withstands more charge/discharge cycles than a conventional one, handles heat better and is the required technology for motorcycles with advanced Start-Stop and regenerative braking. Expected lifespan: 5-8 years under normal conditions.
How is the Exide ET4B-BS battery installed in the vehicle?
In most motorcycles it fits in 15-30 minutes with a 10 mm wrench; if the battery is under the seat or in the boot the time can double. See the step-by-step guide on our blog. Quick summary: 1) switch off the engine and remove the key; 2) locate the original battery (engine bay, boot or under seat); 3) disconnect the negative (−) terminal first, then the positive (+); 4) loosen the hold-down clamp and remove the old battery; 5) fit the new one in the same orientation — with positive on the right match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On motorcycles with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile.
How many years does this battery last?
Expected lifespan of the Exide ET4B-BS is 5 to 8 years in mild-climate motorcycle use with Start-Stop. In cold regions it drops slightly due to cold-start stress; in very hot regions it also drops because of electrolyte evaporation. To extend its life: avoid deep discharges (headlights on with engine off), have the alternator checked yearly, and keep the battery clean and properly secured.
What are the dimensions of the Exide ET4B-BS battery?
Dimensions (length × width × height) are 115×40×85 mm — also written as 115x40x85 mm — following the European DIN standard. Always measure the space in your motorcycle before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals.
What polarity does the Exide ET4B-BS battery have?
Polarity: positive on the right. To identify it, place the battery in front of you with the terminals facing you and check which side the positive (+, marked with a red ring) is on. Before buying, verify the polarity matches your current battery: switching polarity forces longer cables or system reconfiguration, with short-circuit risk.
Will the Exide ET4B-BS battery fit my motorcycle?
Three options to confirm: 1) enter your number plate in the finder (DGT/DVLA/KBA auto-detect your model and engine); 2) check the "Compatible vehicles" tab on this page, where we list every vehicle verified by our technical team; 3) if you cannot find your model, message us on WhatsApp with brand, model, engine and year — we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The ET4B-BS typically fits a wide range of European vehicles thanks to its standard DIN case format.
Which batteries are equivalent to the Exide ET4B-BS?
Directly interchangeable batteries (same dimensions, same polarity, same Ah and CCA) are the OEM equivalents from leading brands: Bosch, Tudor, Exide and, depending on the model, Banner or Yuasa. Exact equivalence depends on technology — an EFB cannot be replaced with a conventional battery in Start-Stop motorcycles. See the "Equivalents" section to view recommended options at the same performance level.
The top-rated online battery store in Spain
-
Audited by Trustpilot, no filters, no edits. The top-rated battery store in Spain.
Trustpilot · verified, no filters
-
Official Varta distributor
Official Varta wholesale distributor. 100% genuine batteries, recently manufactured, best price and no middlemen.
World’s best-selling battery brand
-
+100,000 satisfied customers
More than 100,000 customers already trust baterias.com — and recommend us to their friends and family.
They trust us and recommend us
Choose trust, choose quality, choose baterias.com.