# VARTA Professional Starter Batteries > VARTA Professional Starter marine batteries for starting outboard and inboard engines. High instantaneous current and resistance to waves. **Category:** [Start](https://baterias.com/gb/beginning) → [Batteries](https://baterias.com/gb/batteries) → [VARTA batteries](https://baterias.com/gb/batteries-varta) - **Canonical URL**: https://baterias.com/gb/batteries-varta-professional-starter - **Language**: en-GB ## Description Professional Starter is the VARTA nautical starting range: its function is to start the boat engine, not to power the onboard consumptions. ## Technology They are built with thin plates and a lot of active surface area, the configuration that maximizes instantaneous current. They include reinforcements against vibration and waves, and a casing prepared for the marine environment. They deliver a very high intensity for a few seconds, which is exactly what is required for the starting of an outboard or inboard engine. ## Applications - Starting of outboard and inboard engines - Recreational and sport fishing boats - Installations with a separate starting bank from the service bank - Replacement of the original starting battery ## The range in figures References 9 Capacity 52 – 140 Ah Cold cranking 470 – 800 A (EN) Voltage 12 V Technology PLOMO/ACIDO ## How to choose Do not use it as a service battery: a starting battery subjected to repeated deep discharges degrades in a few months. If you need to power the fridge, sonar or lights, install a separate service bank with a Dual Purpose or a lithium battery. ## Naming and equivalences Professional Starter keeps its designation. It is the VARTA marine starting battery; for onboard consumption the corresponding range is Professional Dual Purpose or Professional Li-Ion Deep Cycle. ## Frequently asked questions ### What is the difference between a starting battery and a service battery? The starting battery delivers a lot of current for a few seconds and does not tolerate deep discharges. The service battery is built to be discharged and recharged daily. Using a starting battery as a service battery degrades it in a few months. ### Can I use a Professional Starter for the boat's refrigerator? It is not advisable. For onboard consumption you need a service bank: a Dual Purpose if you share function, or a lithium battery if the consumption is daily and prolonged. ### Does it withstand the marine environment? Yes. It incorporates reinforcements against vibration and waves and a casing prepared for marine use. ### How many starting amps do I need for my engine? It depends on the engine displacement and whether it is diesel or gasoline. Consult the engine manual: the manufacturer indicates the minimum cold cranking current required. ## VARTA Professional Starter: pure cranking for your boat The **Professional Starter** range is VARTA's classic SLI battery built purely for engine starting: thin plates that deliver a high current spike (CCA) the instant you turn the key, without the deep-cycling ability a house bank needs. It's fitted as the **cranking battery on a motorboat**, kept separate from the circuit feeding the fridge, anchor lights, fish finder or navigation electronics. ### VARTA Professional Starter models - **LFS90** (90 Ah / 800 A): small-to-mid motorboat. - **LFS140** (140 Ah / 900 A): mid-size motorboat. - **LFS200** (200 Ah / 1100 A): large motorboat, bigger-displacement engines. ### How to choose your VARTA Professional Starter The rule is simple: match or exceed the capacity (Ah) and cranking current (CCA) your engine manufacturer specifies, while respecting the tray dimensions and terminal layout. Use our [battery comparison tool](/gb/comparator) to cross-check all three models — LFS90, LFS140 and LFS200 — and find the one that fits your boat. ## Frequently asked questions about VARTA Professional Starter ### **Can the Professional Starter also power onboard equipment?** That's not its job: it's a thin-plate starting battery. For a fridge, lights or electronics with the engine off you need a separate **house or dual-purpose battery**. ### **What's the difference between Professional Starter and Professional Dual Purpose?** The Starter only cranks the engine; the Dual Purpose combines starting and house duty in one battery when there's no room or budget for two separate banks. ### **Does it need maintenance?** No. It's a sealed SLI battery that never needs topping up with distilled water, with terminals set up for marine installation. ### **How long does a VARTA marine starting battery last?** With normal cranking and no deep discharges, its lifespan matches a premium automotive SLI battery; repeated deep cycling shortens it considerably. Catalogue curated by our technical team. **11,045 Trustpilot reviews · 4.5/5**. 24h mainland delivery, free 14-day returns. ## Products in this category | Product | Brand | Price | |---|---|---| | [Marine battery Varta LFD140 12V 140Ah 800A](https://baterias.com/gb/battery-varta-lfd140-12v-140ah-800a) | VARTA | 180,72 € | | [Marine battery Varta LFS105N 12V 105Ah 800A](https://baterias.com/gb/battery-varta-lfs105n-12v-105ah-750a) | VARTA | 215,27 € | | [Marine battery Varta LFS74 12V 74Ah 680A](https://baterias.com/gb/battery-varta-lfs74-12v-74ah-680a) | VARTA | 125,62 € | | [Marine battery Varta LFS75 12V 75Ah 600A](https://baterias.com/gb/battery-varta-lfs75-12v-75ah-600a) | VARTA | 151,41 € | | [Marine battery Varta LFS120 12V 120Ah 780A](https://baterias.com/gb/battery-varta-lfs120-12v-120ah-680a) | VARTA | 289,80 € | | [Marine battery Varta LFS95 12V 95Ah 800A](https://baterias.com/gb/battery-varta-lfs95-12v-95ah-800a) | VARTA | 183,86 € | | [Marine battery Varta LFS60 12V 60Ah 540A](https://baterias.com/gb/battery-varta-lfs60-12v-60ah-540a) | VARTA | 105,44 € | | [Marine battery Varta LFS52 12V 52Ah 470A](https://baterias.com/gb/battery-varta-lfs52-12v-52ah-470a) | VARTA | 96,63 € | ## 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 · 2026-08-08*