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Long 36B20R(S) · Car battery 12V 40Ah

Specifications

BrandLONG
Part number36B20R(S)
Voltage (V)12
Capacity (C20)40Ah (c20)
Capacity (C5)32Ah (c5)
Length197.00 cm
Width129.00 cm
Height227.00 cm
Weight7.80 Kgs
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Long 36B20R(S) 12V 40Ah is a passenger car battery with factory-guaranteed cranking power and extended service life. OEM quality at white-label prices: calcium-silver grids, low self-discharge and compatible with all modern electrical systems.

Why this car battery?

  • Original-equipment qualitywithout dealership prices
  • Lasts 4 to 6 yearsbuy once instead of twice
  • Real human tech supportif you have any doubts before buying
Voltage
12 V
Capacity
40 Ah C20
Dimensions
197×129×227 mm
Weight
7,8 kg
Model
Starting Series
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Car battery Long 36B20R(S) Starting Series 40Ah 12V

12VVoltage
40AhCapacity
7.80kgWeight

With 40 Ah at 12 V, the Long 36B20R(S) from the Starting Series range is a starter battery built for passenger cars with conventional starting, without a Start-Stop system. Its 197 × 129 × 227 mm make it the exact replacement for the 40 Ah battery fitted as standard to many cars.

  • Low self-discharge: copes with long stops without losing charge.
  • Designed to last several years under normal daily use.
  • Direct replacement for the original battery in size and terminals.
  • Reliable cold starts, even after weeks without driving.

What the Long 36B20R(S) is for

With 40 Ah, the Long 36B20R(S) is sized for passenger cars with conventional starting, without a Start-Stop system. It is a direct replacement for the original battery as long as dimensions and terminals match. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 7.80 kg.

Size, terminals and hold-down of the Long 36B20R(S)

It has external dimensions of 197 × 129 × 227 mm and weighs 7.80 kg. 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.

Why choose Long batteries

Long batteries combine large-scale production with ISO quality standards and a batch-to-batch consistency that has made them the de-facto standard in backup systems and electric mobility. All the Long batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty.

The Long 36B20R(S) within the Starting Series range

The 36B20R(S) is part of the Long Starting Series range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family.

Care and maintenance

In normal daily use the alternator keeps the battery charged; if the car stands for weeks, a maintenance charge once a month prevents deep discharge. Keep the terminals clean and tight, and check that the resting voltage does not drop below 12.4 V: below that it is time to recharge.

Manufacturer's warranty

The Long 36B20R(S) comes with the manufacturer's official warranty against manufacturing defects; the exact period is stated in the brand's conditions. If it fails through a defect within the period, we replace it free of charge.

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.

  • Reference
    BCOM-LONG-36B20R(S)

Data sheet

  • Brand
    LONG
  • Reference
    36B20R(S)
  • Model
    Starting Series
  • Voltage (V)
    12
  • Length
    197.00 cm
  • Width
    129.00 cm
  • Height
    227.00 cm
  • Weight
    7.80 Kgs
  • Capacity (C20)
    40Ah (c20)
  • Capacity (C5)
    32Ah (c5)

Specific References

  • MPN
    36B20R(S)

Recommended accessories — complement the Long 36B20R(S) with a charger or tester

Fitting it yourself? Step-by-step guide to replacing the battery →

Frequently asked questions

How do I fit the 36B20R(S) model in my car?

In most cars 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 — match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On cars with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile.

How long does the Long 36B20R(S) battery last?

Expected lifespan of the Long 36B20R(S) is 4 to 7 years in regular use (depends on technology and climate). 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 Long 36B20R(S) battery?

Dimensions (length × width × height) are 197×129×227 mm — also written as 197x129x227 mm — following the European DIN standard. Always measure the space in your car before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals.

Will the Long 36B20R(S) battery fit my car?

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 36B20R(S) typically fits a wide range of European vehicles thanks to its standard DIN case format.

Which interchangeable batteries are there for this one?

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 cars. See the "Equivalents" section to view recommended options at the same performance level.


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