# Fulbat 6N4-2A-4 · Motorcycle battery 6V 4.2Ah 25A ![Fulbat 6N4-2A-4 · Motorcycle battery 6V 4.2Ah 25A](https://bateriasonline.es/370-home_default/fulbat-6n4-2a-4.jpg) > Fulbat 6N4-2A-4: 4.2 Ah motorcycle battery, 25 A (EN), 71×71×96 mm, positive terminal on the right. Equivalent to Fulbat 6N4-2A and Motobatt MBT6N4. **Category:** [Motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries) → [Fulbat](https://bateriasonline.es/en/fulbat-batteries) - **Canonical URL**: https://bateriasonline.es/en/fulbat-6n4-2a-4 - **Language**: en - **Brand**: Fulbat - **Reference**: BOL-FULBAT-6N4-2A-4 - **MPN**: 6N4-2A-4 - **Last updated**: 2026-11-07 ## Technical specifications | Feature | Value | |---|---| | Brand | Fulbat | | Range | FULBAT Motorcycle DRY | | Application | Motorcycles | | Technology | Lead-acid | | Voltage | 6 V | | Capacity | 4.2 Ah | | Cold cranking amps (EN) | 25 A | | Length | 71 mm | | Width | 71 mm | | Height | 96 mm | | Weight | 0.92 kg | | Polarity | Positive terminal on the right | ## Quick description Fulbat 6N4-2A-4: motorcycle battery with 6 V, 4.2 Ah and 25 A cold cranking current, measuring 71 × 71 × 96 mm, with the positive terminal on the right. ## Description ## Where the Fulbat 6N4-2A-4 fits The Fulbat 6N4-2A-4 is made for motorcycles, scooters and quads. It handles frame vibration and idle periods better than an adapted car battery. At 4.2 Ah it is a small battery, typical of 50 to 125 cc scooters and light motorcycles. The 6N4-2A-4 belongs to the Fulbat FULBAT Motorcycle DRY range. [More Fulbat batteries](https://bateriasonline.es/en/fulbat-batteries) ## Equivalents and alternatives to the Fulbat 6N4-2A-4 Batteries that fit the 6N4-2A-4's tray with the same polarity; besides other conventional batteries, an EFB or AGM of this size is a valid upgrade for the 6N4-2A-4. | Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) | |---|---|---|---|---| | Fulbat 6N4-2A | Lead-acid | 4.2 Ah | 25 A | 71 × 71 × 96 | | Motobatt MBT6N4 | AGM | 4 Ah | – | 71 × 71 × 96 | ## Before ordering the 6N4-2A-4, check this - Measure the space: the 6N4-2A-4 takes up 71 × 71 × 96 mm. - With the terminals facing you, the positive terminal of the 6N4-2A-4 is on the right. - Capacity of the 6N4-2A-4: 4.2 Ah; the same as your current battery or slightly more is fine. - Cold cranking: 25 A (EN), equal to or higher than the original. ## Frequently asked questions about the Fulbat 6N4-2A-4 ### How much does the Fulbat 6N4-2A-4 weigh? 0.92 kg, with 4.2 Ah of capacity. ### Which battery is equivalent to the Fulbat 6N4-2A-4? With the same dimensions, polarity and similar capacity you have the Fulbat 6N4-2A and Motobatt MBT6N4. As the 6N4-2A-4 is a conventional battery, an EFB or AGM of the same size also works. ### What is the cold cranking current of the Fulbat 6N4-2A-4? 25 A to the EN standard, with 4.2 Ah capacity. ### Which side is the positive terminal on the Fulbat 6N4-2A-4? On the 6N4-2A-4, the positive terminal is on the right with the terminals facing you: compare it with your current battery, because with reversed polarity the cables will not reach. ### Which charger does the Fulbat 6N4-2A-4 need? An automatic lead-acid charger with cut-off or maintenance mode, rated at 10 to 20% of its capacity in amps. If it is a vented type, check the electrolyte level and top up only with distilled water. ## Inside the 6N4-2A-4: lead-acid technology Inside, the 6N4-2A-4 is classic lead-acid: liquid electrolyte and lead plates. If the 6N4-2A-4 is left discharged for weeks it sulphates: a maintenance charger prevents this. ## Other options if you are unsure about the 6N4-2A-4 - [All motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries) - [The whole Fulbat range](https://bateriasonline.es/en/fulbat-batteries) - [Varta 6N4A-2A-4](https://bateriasonline.es/en/varta-6n4a-2a-4-004014001) · 4 Ah, 10 A, 71×71×96 mm - [Fulbat 6N4B-2A](https://bateriasonline.es/en/fulbat-6n4b-2a) · 4.2 Ah, 35 A, 102×48×96 mm --- *bateriasonline.es — Batteries and accessories · 2026-11-10*