Marine Batteries Series: The Features That Make It A Superior Lithium Battery

3,577 Published by BSLBATT May 25,2020

The first generation of lithium batteries offered immediate advantages over lead-acid batteries, but they still left users wanting more. Just because lithium batteries solved the issues of partial state of charge, charging procedures, maintenance, and battery life didn’t mean they didn’t create new problems, or, more precisely, higher expectations.

BSLBATT designed the Marine Batteries Series around those problems and expectations. We set out with specific design criteria based on our analyses of where existing lithium batteries fell short and resolved not to bring a battery to market unless it satisfied every criterion. Let’s take a look at a few features of the Marine Batteries that we developed based on what wasn’t there before.


1. Ease of use: Drop-in, ready to go

The one area where BSLBATT wanted to be completely conformist and absolutely unoriginal was in the size and shape of the battery. We did not want anyone to have to change anything about their boat other than their batteries. The most difficult part of the installation is removing your heavy lead-acid batteries.

The Marine Batteries Series 36V fits into the standard battery trays for the boat, jet ski, kayak, sailboat, or yacht.

Once you place the batteries into the tray, utilizing the battery cables they’re connected in parallel, which means the positive terminals are connected together and the negative terminals are connected together. Once the battery cables are connected, you then connect the CAN cables, and this is just as easy: connect the CAN Out of one battery into the CAN In of the next battery, the CAN Out of that battery into the CAN in of the next, and so on.

marine batteries

2. How much capacity do you need? How much do you want?

Lead-acid and other lithium batteries need to be connected in series so you can get 36 volts from your array. But each lithium marine battery is 36 volts, meaning you can simply connect them in parallel to customize the capacity you need.

Although you can connect up to 10 lithium marine batteries in parallel. With BSLBATT, this provides a capacity of 300 Amp-hours. That converts to about 120 – 150 miles per charge.

This may seem high based on other batteries you’ve owned and your back-of-the-napkin math, so this is a good time to mention that each BSLBATT 36V Marine Batteries is 34 pounds, about half the

weight of a lead-acid battery. The combination of greater capacity and less weight is a double benefit to your distance per charge.

Most people will use 2-3 BSLBATT lithium marine batteries in their Boat to get the same range as their previous lead-acid batteries.

3. Smart hardware design keeps the battery calm and cool

If lead-acid batteries are rotary telephones and lithium batteries are cell phones, the BSLBATT is the iPhone X. The hardware and software of the battery monitoring system (BMS) make BSLBATT’s lithium marine batteries as smart as any “smart” device you’re already using.

BSLBATT’s BMS hardware is an entirely solid-state – there are no moving components. This makes the battery more durable, particularly if you have it installed in a sailboat and keeps the operations of the battery much smoother. Sometimes under abrupt conditions, traditional lithium batteries with electromechanical components will have little hiccups. BSLBATT’s hardware eliminates those, as does the software, as we’ll see below.

Another design advantage of using solid-state components is heat generation and dissipation. Solid-state components generate less heat, by design. BSLBATT Lithium Marine batteries use a lot of components on each board, more than any other BMS. On its own, this could lead to heat building up. But the arrangement of the individual components and the spacing of the boards dissipate heat more efficiently and more fully than any other battery, keeping the circuitry at an optimal temperature for operations and prolonging the life of the battery.

The other feature that keeps the temperature low inside the battery is the heat sink. The BSLBATT nameplate on the top of the battery is there because of the engineers, not the marketers.

Putting the heat sink on the top of the battery gives the heat generated by all the electronics a path to the outside world. Most batteries have their heat sink within the battery if they have one at all, which shuffles the heat away from the electronics but still traps it, causing the internal temperature to rise during extended use.

marine battery

4. Research-driven ability to handle regen currents

Processing regeneration currents is one of the most challenging features of a lithium battery and with BSLBATT we rose to the challenge with a unique solution. To protect the battery, there has to be a limit to the magnitude of the regen current that reaches the battery, particularly when the batteries are at a high state of charge. This necessary safety design causes traditional lithium batteries to disconnect when a regen current exceeds a preset magnitude and duration. When the batteries are being used to power a vehicle and they see a regen current, they react to it as if a high-power charger was connected, and immediately go into a protective mode

causing them to disconnect. To bring the batteries back online, you need to disconnect then reconnect all cables.

5. Smart software design keeps the battery learning

We can’t be there optimizing every battery for the conditions you create throughout its lifespan, so we designed a battery that can optimize itself.

The BMS processes a wide number of inputs, and instead of simply calculating outputs the software’s algorithms learn about the battery in real-time. BMS’s with standard algorithms can see their outputs drift over time as increasing variability in the data is processed through a fixed series of calculations. BSLBATT’s BMS is constantly updating, so it grows more accurate and stays accurate over the life of the battery.

BSLBATT’s marine battery series is the first lithium batteries designed specifically around how they need to perform in the boat, jet ski, kayak, sailboat, or yacht.

lithium marine battery

Lithium Benefits for Marine

BSLBATT lithium batteries are built to last and designed to perform. Lightweight, durable, and maintenance-free, our batteries charge quickly, store safely, and withstand the harshest temperatures and conditions.

● Drop-in Replacement

● Lightweight

● Constant Power

● No Maintenance

● Temperature Tolerant

● Eco-Friendly

● Non-Hazardous

● High Performance

BSLBATT Lithium Batteries are designed to outperform traditional lead-acid batteries on the road, on the water or off the grid, enjoy the freedom that comes with having more usable energy in a lightweight, no maintenance package that’s safe, reliable and worry-free.

Compared to lead-acid and other lithium batteries, BSLBATT lithium-ion phosphate batteries offer significant advantages, including improved discharge and charge efficiency, longer life span, and the ability to deep cycle while maintaining power. BSLBATT LiFePO4 batteries often come with a higher price tag, but a much better cost over the life of the product. No maintenance and super long life make them a worthwhile investment and a smart long-term solution.

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