# Jet Ski Batteries > Sealed AGM batteries for Yamaha WaveRunner, Sea-Doo RXP/GTX, Kawasaki Jet Ski Ultra. Motobatt, Varta Powersports and Exide. Saltwater-resistant **Category:** [Start](https://baterias.com/gb/beginning) → [Batteries](https://baterias.com/gb/batteries) → [Starter Batteries](https://baterias.com/gb/starter-batteries) - **Canonical URL**: https://baterias.com/gb/batteries-for-jet-skis - **Language**: en-GB ## Description **Find the battery for your jet ski** using the finder right below: select your vehicle step by step and see only 100% compatible batteries. Other quick paths: by [number plate](/gb/battery-finder-by-plate), by [part-number](/gb/part-number) from the manufacturer or by the **code printed** on your current battery (Varta E11, Tudor TC700, YTX12-BS, etc.). ## How to choose the right jet-ski battery A PWC is the toughest test for any battery: 4-cylinder 1,500-1,900 cc engines demand 250-400 A cranking, the bay floods partially every ride, and salt corrodes terminals within weeks. Modern PWCs all use sealed AGM. ### Typical capacities Type Capacity CCA Technology Light 1-2 seater (Spark, EX) 10-14 Ah 150-220 A AGM Standard 3-seater (VX, GTX) 14-18 Ah 200-280 A AGM High-performance (FX, RXP, Ultra 310) 18-30 Ah 270-400 A AGM (reinforced seal) ### Key maintenance After every saltwater session: rinse terminals with fresh water and apply dielectric grease. For storage longer than 2 weeks, disconnect the negative or connect a maintainer to prevent self-discharge sulphation. ### Leading brands - [Motobatt Quadflex](/gb/batteries-motobatt) - [Varta Powersports AGM](/gb/batteries-varta) - [Exide Bike AGM Ready](/gb/batteries-exide) ### Compatibility and how to choose correctly Check the **minimum CCA**, **polarity** and exact dimensions for your Yamaha WaveRunner, Sea-Doo or Kawasaki Jet Ski before buying — the battery bay is usually very tight on space. Use the [comparison tool](/gb/comparator) to see several compatible sealed AGMs side by side. ## Frequently asked questions about PWC and jet-ski batteries ### **Why do PWCs only use sealed AGM and never a capped battery?** Because the engine bay floods partially with every ride, and a conventional capped battery would be ruined within a short time. Sealed AGM is the only technology that withstands that environment without leaks or electrolyte loss. ### **How do I stop saltwater corroding the terminals?** Rinse the terminals with fresh water after every ride and apply dielectric grease. It's the single most effective maintenance habit for extending battery life in a marine environment. ### **How long can I leave the jet-ski idle without damaging the battery?** More than two weeks unused calls for disconnecting the negative terminal or connecting a 12V maintainer; otherwise self-discharge can leave it sulphated before your next ride. ### **What CCA do I need for my Yamaha FX, Sea-Doo RXP or Kawasaki Ultra?** High-displacement engines (1,500-1,900 cc) demand 250-400 A of CCA; check the table for your segment (light, standard or high-performance) before choosing a model. Catalogue curated by our technical team. **11,145 Trustpilot reviews · 4.5/5**. 24h mainland delivery, free 14-day returns. ## Products in this category | Product | Brand | Price | |---|---|---| | [Motorcycle battery Exide GEL12-19 12V 19Ah 170A GEL](https://baterias.com/gb/battery-exide-gel12-19-12v-19ah-170a) | EXIDE | 75,56 € | | [Motorcycle battery Varta YTX14-BS (512014010) 12V 12Ah 200A AGM](https://baterias.com/gb/battery-varta-moto-12v-12ah-ytx14-4-ytx14-bs-512014010) | VARTA | 36,30 € | | [Motorcycle battery Varta YTX12-BS (510012009) 12V 10Ah 150A AGM](https://baterias.com/gb/battery-varta-moto-12v-10ah-ytx12-4-ytx12-bs-510012009) | VARTA | 29,34 € | | [Motorcycle battery Varta YTX9-BS (508012008) 12V 8Ah 135A AGM](https://baterias.com/gb/battery-varta-moto-12v-8ah-ytx9-4-ytx9-bs-508012008) | VARTA | 29,59 € | | [Motorcycle battery Varta YTX7L-BS (506014005) 12V 6Ah 100A AGM](https://baterias.com/gb/battery-varta-moto-12v-6ah-ytx7l-4-ytx7l-bs-506014005) | VARTA | 26,77 € | | [Motorcycle battery Varta YTX20L-BS (518901026) 12V 18Ah 250A AGM](https://baterias.com/gb/battery-varta-moto-12v-18ah-ytx20l-4-ytx20l-bs-518901026) | VARTA | 52,97 € | | [Motorcycle battery Exide ETZ7-BS 12V 6Ah 100A AGM](https://baterias.com/gb/battery-exide-etz7-bs-12v-6ah-100a) | EXIDE | 22,24 € | | [Motorcycle battery Exide ETX7L-BS 12V 6Ah 100A AGM](https://baterias.com/gb/battery-exide-etx7l-bs-12v-6ah-100a) | EXIDE | 20,94 € | | [Motorcycle battery Varta TTZ14S-BS (511902023) 12V 11Ah 230A AGM](https://baterias.com/gb/battery-varta-motorcycle-12v-11ah-ytz14s-4-511902023) | VARTA | 46,63 € | | [Motorcycle battery Exide AGM12-31 12V 30Ah 430A AGM](https://baterias.com/gb/battery-exide-agm12-31-12v-30ah-430a) | EXIDE | 92,34 € | | [Motorcycle battery Varta YT12A-BS (511901014) 12V 11Ah 160A AGM](https://baterias.com/gb/battery-varta-moto-12v-11ah-yt12a-4-yt12a-bs-511901014) | VARTA | 42,54 € | | [Motorcycle battery Varta YTX5L-BS (504012003) 12V 4Ah 80A AGM](https://baterias.com/gb/battery-varta-moto-12v-4ah-ytx5l-4-ytx5l-bs-504012003) | VARTA | 21,63 € | | [Motorcycle battery Varta YTX7A-BS (506015005) 12V 6Ah 105A AGM](https://baterias.com/gb/battery-varta-moto-12v-6ah-ytx7a-4-ytx7a-bs-506015005) | VARTA | 32,63 € | | [Motorcycle battery Exide ETX4L-BS 12V 3Ah 50A AGM](https://baterias.com/gb/battery-exide-etx4l-bs-12v-3ah-50a) | EXIDE | 11,59 € | | [Motorcycle battery Exide ETX7A-BS 12V 6Ah 90A AGM](https://baterias.com/gb/battery-exide-etx7a-bs-12v-6ah-90a) | EXIDE | 22,26 € | ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — over 25 years of experience validating automotive batteries. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-08-15*