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What Is a Deep Cycle Lithium Battery?

A deep cycle lithium battery is one of several types of rechargeable batteries with deep cycles. A deep cycle battery offers sustained energy during extended use. You can deplete more of the capacity before needing to recharge the battery.


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Lithium batteries also tend to provide longer life. Most lithium batteries are rated to provide 4,000 to 5,000 charging cycles. Lead-acid batteries average 500 to 1,000 cycles. You get increased longevity, durability, and efficiency compared to traditional options.

How Does a Deep Cycle Lithium Battery Work?

Deep cycle lithium batteries are helping to revolutionize the battery industry. These batteries do not use traditional lead-acid battery technology to carry an electrical charge. The batteries move lithium ions from the anode to the cathode during discharge. The ions are transferred back when charging.

The design is more durable and lighter weight. A deep cycle lithium battery can weigh up to 80% less than a comparable lead-acid battery. It is also more resistant to vibration and shock.

The battery can transfer ions more efficiently, which results in faster recharging. The typical lithium battery can recharge at up to four times the speed of a standard deep-cycle lead-acid battery.

RELiON RB100 100Ah LiFePO4 12.8V Deep-Cycle Lithium Battery

Lithium batteries are also more efficient compared to lead-acid batteries.

Practical Applications of a Deep Cycle Lithium Battery

As lithium batteries have a lower shelf discharge rate compared to traditional lead-acid batteries, these batteries are useful in situations that require periods of inactivity. Common applications for lithium batteries include backup power storage for energy systems, such as solar and wind power generators.

Lithium batteries do not use lead or heavy metals, which makes them an environmentally friendly option. They can also often be used as a drop-in replacement for OEM lead-acid batteries.

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