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About 72v battery

Types of 72v battery

Lithium-ion batteries

Of all the 72v battery types in the market today, lithium-ion batteries are prominent because of their excellent performance and high energy density. Usually used in electric bikes, cars, and large energy storage systems, these batteries are comparatively lightweight and can be charged fast. Though they cost more, they offer longevity and diminished upkeep in the long run.

Flooded lead-acid batteries

Flooded lead-acid batteries have electrolyte fluid that freely flows (floods) over the battery plates. These are the most common type of rechargeable batteries and the least expensive. They give exceptional performance when applied in settings that allow periodic maintenance and frequent recharging. A clear example is a battery that can withstand the rigors of a heavy-duty truck battery. While the performance levels are amazing, they will require regular maintenance and have a shorter lifespan than VRLA.

Valve-regulated lead-acid (VRLA) batteries

There are two types of VRLA batteries: gel and absorbed glass mat (AGM) batteries. A gel battery uses a silica-based gel to suspend the electrolyte solution, while AGM batteries use fiberglass mats to absorb the electrolyte solution. Users will appreciate that they require little maintenance compared to flooded lead acid batteries. They are sealed and can withstand extreme temperatures. This makes them suitable for applications that need stable, reliable power in challenging environments. This includes emergency lighting systems and UPS.

Nickel-cadmium batteries

Nickel-cadmium (NiCd) batteries offer high discharge rates and are highly durable. Suitable for rugged applications such as aerospace or mining equipment, these batteries can withstand extreme temperatures and deliver consistent performance. While less common in renewable energy systems today due to the higher cost and environmental concerns associated with cadmium, they are still used in niche applications requiring longevity and reliability.

Emerging technologies

The segment market for heavy duty batteries is witnessing the entrance of several new battery technologies. Solid-state batteries replace the liquid electrolyte with a solid material. This increases safety and energy density. Sodium-ion and flow batteries are good alternatives to lithium-ion technology. This is because they are cost-effective and offer scalable energy storage solutions.

Industrial application of 72v battery

Electric vehicles (EVs)

In the EV sector, 72-volt batteries can provide enough oomph to offer great speed, high performance, and longer ranges. No wonder highway-capable electric cars and commercial delivery trucks use these batteries. Users shouldn't worry about running out of steam. These large batteries store energy and release it over time so electric vehicles can travel hundreds of miles on a single charge.

Public transport

Many large buses are switching from diesel to electric. A 72 volt battery charger powers these electric buses. It's plugged into a charging station overnight to recharge the huge battery that drives the bus all day. Some buses can even fast-charge during a quick stop, ensuring they never run out of power. This helps cities transport more people while keeping the air cleaner.

Tool power systems

Construction and worker safety tools often need 72-volt batteries. These batteries power tools like drills, saws, and impact wrenches, giving them enough strength to tackle tough jobs. With a strong, long-lasting battery like this, tools work all day without needing frequent recharges. This helps workers get more done safely and quickly. Cordless tools also allow more flexibility.

Heavy machinery

Farm equipment like tractors and high-performance electric motorcycles and scooters are powered by 72-volt batteries. These batteries help keep the tools and vehicles working well for long hours, which is especially important in tough fieldwork.

Marine and RV

These 72v batteries can power electric boats and yachts, providing clean energy for a smooth ride. They're also used in campervans and RVs to run appliances, lights, and more energy while parked or camping without draining the battery during long drives.

Stationary energy storage

People are adding solar panels to their roofs to help power their homes. A 72v battery stores the extra energy from the sun so it can be used later when the sun isn't shining and to avoid high utility costs. These batteries are connected to a small inverter that moves electricity between the home, solar panels, and the utility grid. They help homes keep working during power outages by providing backup energy from the stored battery power. Some utilities also use these batteries to help manage energy supply and demand on the electric grid. All this helps make the electric system more reliable and environmentally friendly.

Product specification and features of 72v battery

Technical specifications

A 72 battery has an arrangement of 36 individual cells hooked together in series. Each cell has a nominal voltage of 2 volts. Thus, the total voltage comes to 72 volts (36 x 2). Lithium-ion variations might have slightly different configurations leading to a possible 84 volts maximum charge. Nonetheless, the基本 consensus voltage remains around 72 volts.

  • Battery capacity

Capacity comes into play when measuring how much energy a battery can store. It directly relates to how long the device will function before needing a recharge. Amp-hours (Ah) measure capacity. The higher the Ah, the larger the battery and the longer the vehicle can run. Most 72-volt batteries have a capacity of 20 to 500 Ah. This can change based on battery type and application.

  • Energy

Energy is equal to capacity times voltage. It means the energy stored in a battery is measured in watt-hours (Wh). Large 72-volt batteries can store between 1,440 to 43,500 watt-hours. Smart appliances, power tools, or electric bikes often use batteries with lower energy. Larger applications like homes or electric vehicles use the larger ones.

  • Battery construction

The construction of 72-volt batteries differs for each type. Lithium-ion batteries are lightweight and compact. This makes them perfect for use in portable gadgets and electric vehicles. On the other hand, lead-acid batteries are heavier and have larger dimensions. But because they are cheaper and fit many applications, they will always be in demand. Nickel-cadmium and nickel-metal hydride batteries are also used but can't hold the storage energy as much as the other two types.

  • Portal

Terminals are the battery parts that let power flow in and out. The 72-volt battery usually has two positive terminals and two negative ones. The connection of multiple cells will have each terminal linked to one cell. This makes the voltage equal 72 volts throughout the system.

Key features

  • Great for many applications

These batteries are used in many daily equipment, both small and large. Electric bikes, cars, tools, and even power backup systems for buildings all use these batteries to store energy. They are especially good for solutions that require a lot of energy at once, like large machines or power grids.

  • Reliable and safe

New tech keeps making ion batteries safer and easier to control. Smart systems monitor the batteries to catch any issues early. This helps batteries last longer, work better, and ensures they don't overheat or anything like that.

  • Green energy

More people are choosing these batteries because they are better for the earth. They store energy from clean sources like the sun or wind. This helps reduce pollution and slow down climate change. Keeping these batteries working gives more people the power to help keep the planet healthy.

  • Fast charging

The 72-volt battery can be charged quickly. This is especially true for lithium-ion batteries. This makes them very convenient for users who need to charge their electric vehicles or tools in a short amount of time. A consumer will not have to leave their device idle for hours on end before it can be used again.

Strong points and weak points of 72v battery

Strong points

  • High energy capacity

These batteries can store more energy than smaller voltage batteries. This makes them ideal for big jobs that need a lot of power, like electric cars or big machines.

  • Efficient charging

The beauty of these batteries is that they can be charged quickly and efficiently. Lithium-ion ones, in particular, recharge really fast. This makes them perfect for electric vehicles and power tools that need to be recharged quickly.

  • Increased safety

They have a 72-volt system. The voltage is low enough to reduce risks, especially compared with higher-voltage systems, while still providing sufficient power for demanding applications.

  • Compatible with large applications

These batteries are frequently used in various industries. This includes electric vehicles, renewable energy systems, and backup power solutions. Their versatility makes them suitable for many applications.

Weak points

  • High cost

Although they can store more energy, they are quite pricey. Electric cars and big machines might find it more expensive to power up. The larger the battery, the higher the cost. Unless it's a big job, then the cost might be negligible compared to the efficiency gained.

  • Weight

While lead-acid batteries can be heavy, the lighter lithium-ion batteries are great for usage in electric cars. But this advantage comes with a hefty cost. Sometimes, the heavier weight might not fit into some portable tools and vehicles.

  • Limited lifespan with frequent deep discharges

Regular deep discharges can shorten the lifespan of a 72-volt battery. While many are designed to handle deep cycles, it's essential to manage discharges carefully to maximize longevity. This is particularly vital in applications where the battery is frequently drained entirely.

  • Temperature sensitivity

Last but not the least, lithium-ion batteries might be sensitive to temperature changes. Thus, requiring proper management to avoid overheating or storing them in cold conditions. This is a bummer for people living in localities that experience extreme weather conditions.

How to choose a 72v battery

When choosing a 72v lithium battery, one should consider the battery chemistry. Lithium-ion, lead-acid, nickel-cadmium, and nickel-metal hydride each have their benefits and disadvantages. These disadvantages will impact the operation. Lithium-ion batteries are lightweight. They store energy more efficiently and are maintenance-free. On the other hand, lead-acid is heavier but cheaper and proven over time.

Next, try to determine the application the battery will be used for. The 72-volt battery's purpose and requirements will determine the capacity, discharge rate, and power output to consider. For example, electric vehicles and large machines require batteries with high capacity and discharge rates. Meanwhile, less intense applications like backup power systems can do with lower capacity but more stable outputs.

Location plays an important role, too. Environmental factors such as climate and altitude will determine the operating conditions of the battery. Some 72-volt batteries will be more resistant to extreme temperatures than others. It will be best to ensure the chosen battery can withstand those conditions if the client lives in those areas.

The charging system must be comparable to the selected battery. This is especially true for those integrating the lithium-ion and lead-acid batteries into the existing energy system. The charger must match the battery's voltage and type to ensure safe and effective charging. A smart battery management system (BMS) is needed. For users of lithium-ion batteries, a BMS is essential. This will help monitor the battery health, optimize the charging process, and enhance safety.

Last but not least, consider the budget. Obviously, but while lead-acid batteries are more affordable upfront, they will require more frequent maintenance and a shorter lifespan. This can add to the long-term costs. Although lithium-ion is pricier initially, its longer lifespan, reduced maintenance, and better performance may give the user of the technology better value for their money.

Q&A

Q1. How many cells are in a 72-volt battery?

A1. A 72-volt battery comprises 36 cells, as each cell operates at 2 volts. A 36 cells multiplication results in an overall battery voltage of 72 volts (36 x 2 = 72).

Q2. What is the difference between a 12-volt and 72-volt battery?

A2. The main difference between a 12-volt and 72-volt battery is the number of cells connected in series, with the former having six and the latter having thirty-six. The higher cell count gives the 72-volt battery more voltage, making it better for high-power applications like electric vehicles and big machinery. Conversely, the 12-volt battery is ideal for small applications like cars and tools.

Q3. Can a 72-volt battery be charged with a solar panel?

A3. Yes, a 72-volt battery can be charged with solar panels. Just ensure the solar system is compatible with the battery type and properly connected to match the battery's voltage. Using a solar charge controller will help manage the energy from the sun. This prevents overcharging and ensures the battery is charged safely and efficiently.

Q4. Can a 72-volt battery be used in an electric car?

A4. Yes, a 72-volt battery can be used in an electric car. It will power low-speed electric vehicles. However, most modern electric cars typically use higher-voltage batteries. These batteries provide greater energy and efficiency for longer distances and faster speeds.

Q5. What appliances are powered by a 72-volt battery?

A5. A 72-volt battery powers many appliances, such as electric vehicles, power tools, large machinery, temporary power for construction sites, and renewable energy systems like off-grid solar or wind installations.