Deep Cycle Battery

Deep Cycle Battery Better for You

Table of Contents

What is the deep cycle battery?

A Deep Cycle battery is a battery that is designed to be able to store a large quantity of energy while having the ability to discharge from 100% down to 0% without hurting the battery.

A deep-cycle battery also ensures that a steady amount of power is being delivered to applications over a long period of time without interruption or failure. It is constructed with thicker plates and a denser active material ratio. Due to these features, a deep-cycle battery achieves greater cycling capacities.

 

 

What is DOD (Depth of Discharge)?

The Depth of Discharge (DOD) of a battery represents the percentage of the battery that has been discharged relative to the overall capacity of the battery. For example, if a battery has a nominal capacity of 100kWh and discharges 30kW, the Depth of Discharge comes out to be 30%.

Its DOD is (30x 1) / 100 = 30%.

The more often a battery is charged and discharged, the shorter the battery life will become. It is generally not recommended to completely discharge a battery as it will greatly reduce the battery life. Many battery manufacturers specify the recommended maximum DOD in order to maximize the battery performance. If a manufacturer of a 10 kWh battery recommends a maximum DOD of 80%, the battery should not use more than 8 kWh without charging. The DOD is an important factor to consider because a higher DOD means that more of the energy in a battery can be used. The DOD of many modern lithium-ion batteries is 100%. A battery’s “cycle life,” the number of charge/discharge cycles in its life, depends on how much battery capacity is typically use. Rather than completely draining a battery to its maximum DOD, a user will be able to attain more cycles in their battery regularly discharging it with a lower percentage of charge. For example, a battery may have 15,000 cycles at a DoD of 10%, but only have 3,000 cycles at a DoD of 80%.

What applications need deep cycle battery?

Floor Machines
Electric vehicles
Materials handling
Renewable energy
Aerial work platforms
Commercial transit
RV and Marine
HME Mobility Telecom UPS
Security Electronics

All of these applications require high energy retention, deep-cycle discharge, a large number of cycle lives, and a stable discharge performance.

Why choose LiFePO4 deep cycle battery?

Another way to think of the DOD is the extent to which discharge begins to stop during use. 100% DOD refers to discharge at full capacity. The life of a lead-acid battery is greatly affected by the DOD. A lead-acid battery is likely to fail quickly on a user as it normally only allows 50 to 80% DOD. In contrast, A LiFePO4 (Lithium Iron Phosphate) battery, which is newer technology, has a deep-cycle discharge, so it can reach 2000 cycles with 100% DOD. Lithium batteries can also be discharged at a specific C-rating. With a working temperature of 25° C and a discharge rate of 0.5C, a LiFePO4 battery can reach 4000 to 6000 cycles. Compared to lead-acid batteries, the advantages of deep-cycle lifepo4 batteries are the following:

Eco-friendly
Good high-temperature resistance
Good safety characteristics
No memory effect
Higher-capacity compare with same size lead-acid battery
Longer cycle life than other lithium-ion batteries
Ideal drop-in replacement for lead-acid batteries
Lower total cost of average use

However, Bravabattery can also customize a battery to have a discharge rate of up to 45C and maximum pulse discharge of 150C.

Deep cycle lithium iron phosphate (LiFePO4) leisure batteries for campervans, motorhomes, boats and off-grid applications.

Why choose lithium technology?

  • Up to 2x useable power compared with lead-acid
  • Up to 50% lighter than an equivalent lead-acid battery
  • Can receive partial charge (unlike lead-acid which need a full re-charge every cycle)
  • Will not sulphate if left discharged so there is no risk of damage
  • No power ‘tail-off’ – voltage remains relatively constant until almost fully discharged

Specifications:

Service Life: 10yrs+
Cycle Life: 1500+ cycles (> 80% capacity retention)
Nominal Voltage: 12.8V
Cut-Off Voltage: 10V approx.
Charge Type: Constant Current / Constant Voltage
Discharge Current 50A
Max Continuous Current ≤100A (5 sec)
Internal Cells: Prismatic LiFePO4
Maximum Internal Resistance:  35M?
Output Terminals: M8 Bolt Down
Operating Temperature: 0-45°C (60°C max discharging)
Operating Humidity: RH < 85%
Storage Temperature: 0-40°C (15-25°C recommended)
Storage Humidity: RH < 50%

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Download Product Datasheet BPG12-100

Tips: more detail information,for deep cycle GEL battery.

Brava Battery specialized in VRLA batteries for Solar storage, Golf cart, Caravan etc.

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