Fish All Day With 36V Lithium Power

The RB36V40 is a durable and long-lasting 36V lithium iron phosphate power source designed specifically for marine use. The parallel design brings a simpler set-up and more capacity, keeping you out on the water for longer.

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Go All Day With The RELiON RB36V40 36V Lithium Marine Battery

RB36V40 Product Features

Simpler Set-Up

Get max voltage with minimum hassle thanks to the RB36V40’s parallel set-up. The improved connectors and small footprint make on-board installation a breeze, while the battery’s low weight means you’ll never sacrifice speed through the water.

Longer Lasting

The parallel setup means quicker and easier charging, but it also means there’s more in the tank when you need it. The RB36V40 offers 20% greater capacity than its series equivalent*, translating to enhanced run times to keep you out on the water for longer.

*Based on 3 @ 40Ah in parallel vs 3 @ 12V 100Ah in series


The RB36V40 is built for the marine environment. You'll get year-round peace of mind with the newly enhanced case, featuring an IP67 waterproof rating, and a new glue channel and screw-latched enclosure to protect against airborne contaminants.

Suitable for Commercial Use

The benefits of parallel power translate equally well to various commercial applications. For example, the battery’s increased capacity, faster charge time, and reduced downtime and maintenance costs make it ideal for use in floor cleaning settings.


RELiON lithium batteries provide more power than traditional lead-acid batteries and are typically half the weight. This makes for better acceleration and more agility on the water.

Maintenance Free

RELiON lithium batteries are maintenance free – no watering; no corrosion.

Temperature Tolerant

RELiON lithium batteries are designed to perform in harsh conditions–freezing cold, scorching heat or rough waters.

Partial State Of Charge Tolerant

Partial charging does not affect performance quality or battery life. A low self-discharge rate means worry-free storage so even occasional users can be assured of reliable performance.

The Top 4 Factors Customers Consider When Selecting a Battery for Fishing

A look at the top four factors to keep in mind when determining which batteries will best meet your customer’s needs.

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Lasting Power for Your Fishing Adventures

Lots of boat owners, from bass boats to catamarans, are switching to lithium batteries. The advantages comparable to lead-acid are undeniable. To stay ahead, think about giving your customers lithium batteries, especially those from a well-known brand like RELiON. No matter how big your business is, we've got different prices and packages that'll work for you.

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