Marine & Boat Batteries

Power up your boating adventures with Astro Lithium's advanced marine batteries, engineered for extreme-duty applications and backed by an 8-Year No-Gimmicks Warranty.

Got Questions? We've Got Answers.

Everything You Need to Know About Astro Lithium's Marine & Boat Batteries

In most cases, you cannot charge a lithium marine battery with a regular charger. Lithium batteries require a charger specifically designed for them, as they have different charging requirements than traditional lead-acid batteries. A lithium-specific charger is essential to ensure your battery is charged safely and efficiently. Astro Lithium offers a range of advanced lithium battery chargers designed to provide fast and reliable charging for all your lithium battery needs.

Our marine batteries are rated for up to 3,000 life cycles — that’s up to six times longer than traditional lead-acid batteries. They are also backed by our 8-Year No-Gimmicks Warranty, so you can be confident that you’re getting a reliable and long-lasting battery for your boat.

Yes, lithium batteries are suitable for use with outboard motors. We recommend the 12V 100Ah Cranking Dual Purpose Battery for use with starting outboard engines.Lithium batteries are often preferred over lead-acid batteries due to their superior energy efficiency, lightweight construction and long lifespan. However, it's important to ensure that the lithium battery you choose is compatible with your specific motor and that you follow the manufacturer's recommendations for charging and maintenance to ensure optimal performance and longevity.

If you're looking for the perfect trolling motor battery, check out our blog post Selecting the Right Trolling Motor Battery for expert tips and advice on choosing the best battery for your specific needs. Our high-capacity lithium batteries are designed to maximize energy efficiency and reliability for trolling motor applications, ensuring you have the power you need to get the most out of your fishing trips.

Astro Lithium uses a chemistry called Lithium Iron Phosphate (LFP). LFP batteries are renowned for their safety. When lithium battery fires are reported, these incidents typically involve different Lithium-Ion battery chemistries. Our batteries, on the other hand, are based on the Lithium Iron Phosphate technology, which employs a distinct and significantly more stable chemistry.Characterized by exceptional thermal and chemical stability, Lithium Iron Phosphate batteries remain cool even under higher temperatures. These batteries are also resistant to combustion, even when subjected to mishandling during rapid charging and discharging phases or in the event of short-circuit scenarios. Unlike other lithium-ion batteries, Lithium Iron Phosphate does not succumb to thermal runaway, as its phosphate cathode does not catch fire or explode when overcharged or overheated, maintaining the battery's coolness throughout.

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