# Varta YTX20L-4 (FA) · Motorcycle battery 12V 18Ah 270A ![Varta YTX20L-4 (FA) · Motorcycle battery 12V 18Ah 270A](https://bateriasonline.es/1342-home_default/varta-ytx20l-4-fa-518909027.jpg) > Varta YTX20L-4 (FA) (ETN 518909027): 18 Ah motorcycle battery, 270 A (EN), 175×87×154 mm, positive terminal on the right. **Category:** [Motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries) → [Varta](https://bateriasonline.es/en/varta-batteries) - **Canonical URL**: https://bateriasonline.es/en/varta-ytx20l-4-fa-518909027 - **Language**: en - **Brand**: Varta - **Reference**: BOL-VARTA-518909027 - **EAN**: 4016987169537 - **MPN**: 518909027 - **Price**: 91,14 € (VAT incl., Spain) - **Last updated**: 2026-11-09 ## Technical specifications | Feature | Value | |---|---| | Brand | Varta | | Range | VARTA PowerSports AGM Active | | Application | Motorcycles | | Technology | AGM | | Voltage | 12 V | | Capacity | 18 Ah | | Cold cranking amps (EN) | 270 A | | Length | 175 mm | | Width | 87 mm | | Height | 154 mm | | Weight | 5.93 kg | | Polarity | Positive terminal on the right | | Terminal type | Y4 | | ETN code | 518909027 | | JIS code | YTX20 L-4 | ## Quick description The Varta YTX20L-4 (FA) (ETN 518 909 027, also written 518909027) is a motorcycle battery (AGM) with 12 V, 18 Ah and 270 A cold cranking current, measuring 175 × 87 × 154 mm, with the positive terminal on the right. ## Description ## Who the Varta YTX20L-4 (FA) is for The Varta YTX20L-4 (FA) is a motorcycle starter battery: compact, vibration-resistant and with just the right power to turn the starter motor and feed the electronics. With 18 Ah, the YTX20L-4 (FA) suits motorcycles and scooters that had a battery of that capacity. At 18 Ah it goes into large-capacity motorcycles, adventure bikes, customs and quads. Varta lists the YTX20L-4 (FA) in its Powersports AGM Active line. [The full range of Varta batteries](https://bateriasonline.es/en/varta-batteries) ## Varta YTX20L-4 (FA) codes and part numbers Look for any of these YTX20L-4 (FA) codes on your current battery or in the manufacturer's catalogue: | Commercial reference | YTX20L-4 (FA) | |---|---| | ETN code | 518909027 (also 518 909 027) | | Manufacturer short code | TX20L (FA) | | EAN | 4016987169537 | | Base hold-down | B00 | | Terminal type | Y4 | | Also known as | Varta 518909027 · Varta 518 909 027 · Varta TX20L (FA) | ## Equivalents and alternatives to the Varta YTX20L-4 (FA) As the YTX20L-4 (FA) is an AGM battery, we only list other AGM batteries with its dimensions and polarity: neither an EFB nor a conventional battery can replace it. | Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) | |---|---|---|---|---| | Fulbat FTX20L-BS | AGM | 18.9 Ah | 270 A | 175 × 87 × 155 | | Exide AGM12-19 | AGM | 18 Ah | 270 A | 175 × 90 × 155 | | Exide ETX20HL-BS | AGM | 18 Ah | 270 A | 175 × 90 × 155 | | Motobatt MBTX20U | AGM | 21 Ah | 310 A | 175 × 87 × 155 | | Motobatt MBTX20UHD | AGM | 21 Ah | 310 A | 175 × 87 × 155 | | Varta YTX20H-BS | AGM | 18 Ah | 320 A | 175 × 87 × 154 | ## Varta YTX20L-4 (FA) vs TX20HL (FA) and YTX20H-BS Torn between the YTX20L-4 (FA) and another similar Varta? This is what changes: | Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight | |---|---|---|---|---|---| | Varta YTX20L-4 (FA) (this one) | 18 Ah | 270 A | 175 × 87 × 154 | right | 5.93 kg | | Varta TX20HL (FA) | 18 Ah | 310 A | 176 × 89 × 154 | right | 6.55 kg | | Varta YTX20H-BS | 18 Ah | 320 A | 175 × 87 × 154 | right | 6.31 kg | - Varta TX20HL (FA): the same capacity, 40 A more cranking power, the same dimensions. - Varta YTX20H-BS: the same capacity, 50 A more cranking power, the same dimensions. ## Check this before ordering the Varta YTX20L-4 (FA) - Measure the space: the YTX20L-4 (FA) takes up 175 × 87 × 154 mm. - With the terminals facing you, the positive terminal of the YTX20L-4 (FA) is on the right. - Your current battery should say about 18 Ah; a little more is also fine. - Cold cranking: 270 A (EN), equal to or higher than the original. ## Frequently asked questions about the Varta YTX20L-4 (FA) ### Varta YTX20L-4 (FA) or TX20HL (FA)? Compared with the YTX20L-4 (FA), the Varta TX20HL (FA) has 40 A more cranking power. If your current battery says 310 A or more, choose the TX20HL (FA); if it says 270 A or less, the YTX20L-4 (FA) is enough. Both measure 175 × 87 × 154 mm, so they fit the same tray. ### Is the Varta 518909027 the same battery as the Varta YTX20L-4 (FA)? Yes. 518909027 is the ETN code Varta uses for its YTX20L-4 (FA) battery, so you can search for it by either code. ### How much does the Varta YTX20L-4 (FA) weigh? The YTX20L-4 (FA) weighs 5.93 kg. For reference, the Varta TX20HL (FA) (18 Ah) weighs 6.55 kg. ### Which battery is equivalent to the Varta YTX20L-4 (FA)? Only other AGM batteries with its dimensions and polarity: Fulbat FTX20L-BS, Exide AGM12-19 and Exide ETX20HL-BS. Neither an EFB nor a conventional battery replaces the YTX20L-4 (FA). ### Which side is the positive terminal on the Varta YTX20L-4 (FA)? The YTX20L-4 (FA) has the positive terminal on the right, looking at the battery from its long side with the terminals closest to you. ### Which charger does the Varta YTX20L-4 (FA) need? A charger with an AGM mode that limits voltage to about 14.4-14.7 V. Never an old unregulated charger: overcharging dries out an AGM beyond repair. ## What it means that the YTX20L-4 (FA) is AGM The YTX20L-4 (FA) is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. Being sealed, the YTX20L-4 (FA) can be fitted in the boot or under a seat with no risk of spills. ## Other options if you are unsure about the YTX20L-4 (FA) - [Other motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries) - [The whole Varta range](https://bateriasonline.es/en/varta-batteries) - [Fulbat FTX20L-BS](https://bateriasonline.es/en/fulbat-ftx20l-bs) · 18.9 Ah, 270 A, 175×87×155 mm - [Exide AGM12-19](https://bateriasonline.es/en/exide-agm12-19) · 18 Ah, 270 A, 175×90×155 mm --- *bateriasonline.es — Batteries and accessories · 2026-11-11*