84v 20a charger

Types of 84V 20A chargers

The 84V 20A charger is a model that many people use to charge their batteries. However, there are different types of this charger, and each works differently. This charger is primarily used for charging electric vehicle batteries, specific golf carts, and certain industrial battery applications.

• Switching Power Supply (SPS) Chargers: This charger type is commonly used for electric vehicles. It has many prepackaged and customizable options. When the input voltage or any other parameter of the charger circuit changes, the Switching Power Supply (SPS) charger can quickly change its output voltage.
• Linear Regulator Chargers: This SPS charger regulates the output voltage using an electronic circuit. It brings the AC mains voltage down to battery voltage before rectifying and filtering it to DC. Although this 84V DC charger charges batteries slowly, it works well with small electric vehicles.
• Microcontroller-Based Chargers: This type of charger has many programmable options, making it easy to customize according to the battery's charging needs. The microcontroller monitors the battery's voltage, current, and temperature, and its parameters can be adjusted using a specific programmer. This type of charger offers flexible options for battery charging.
• Capacitive Drop Chargers: A capacitor is used to lower the voltage in this type of charger. It drops the voltage before rectifying and filtering it to DC. The capacitor's size will determine how much voltage it will drop, and this charger can charge batteries at 2-3 watts. Golf carts and low-powered electric cars use this type of charger because of its simplicity and low cost.
• High-Frequency Switching Chargers: This type of charger is compact and lightweight, charging batteries quickly. It offers high efficiency and good regulation. This charger's high speed makes it more expensive than other charger types.
• Flyback Converter Chargers: This type of charger is compact and has multiple outputs. It takes battery input voltage, steps that voltage down with a transformer, and then rectifies and filters the output to DC before providing a constant voltage for charging the battery. Many chargers for portable equipment use this type of charger.

Functions and Features of the 84v 20a Charger

This charger is designed to charge batteries efficiently while ensuring safety and stability. Here are some of its key functions and features:

• High Charging Current

  The ""20A"" in the 84V20A charger signifies a high charging current of ""20 Amps"". It allows batteries to charge quickly. Batteries with larger capacities will charge fast to save time.

• High Voltage System Handling

  This charger can adjust to battery packs operating at an 84V level. It's suitable for charging battery systems with 84V like 48V to 60Ah Lithium-ion batteries and electric bicycles.

• Rapid Charging

  This facilitates rapid battery charging compared to traditional chargers. To reduce downtime spent charging, electric bike riders can get back to using their bikes faster. This is helpful in applications where time is critical.

• Charging Efficiency

  84V 20A chargers have good charging efficiency. They transfer power to batteries effectively while minimizing energy loss in the form of heat. This efficient charging ensures the best battery performance and use of the charging energy.

• Battery Compatibility

  This charger works well with various batteries having an 84V nominal voltage. These batteries include lithium-ion, lead-acid batteries, and lithium iron phosphate batteries. Users must ensure a charger matches the specific chemistry type of battery in use for optimal results.

• Electric Vehicle Applications

  84V 20A chargers are electric vehicle-compatible. Electric motorcycles, scooters, and bicycles with 84V battery packs will charge smoothly using this charger. It meets the power demands of medium-duty electric vehicles to keep them operating.

• Other Applications

  Aside from charging electric vehicles, 84V 20A chargers can serve other applications. They can be used to power tools that operate on 84V battery packs or provide electricity for other machinery with similar voltage requirements.

Applications of the 84v 20a charger

The 84v 20a battery charger serves to recharge batteries so they are ready for use again. It has a range of applications, which include the following:

• Bicycle charging: Electric bicycles use high volt lithium batteries that provide enough power to drive the bike over long distances. However, these batteries must be charged after each ride. The 84v battery charger works well with e-bike batteries to charge them quickly or in an efficient manner.
• Motorcycle Battery Charging: Many motorcycles now run on lithium battery packs instead of traditional lead-acid batteries. The 84v 20a charger is an ideal option for recharging these new lithium motorcycle batteries.
• Automobile battery charging: Automobiles also use 12v or 24v lithium batteries. This universal charger can be used to charge the batteries of cars, trucks, and other commercial vehicles.
• Power tools charging: Some heavy-duty power tools are powered by rechargeable lithium batteries. The 84v charger can come in handy for battery-powered power tools like drills, saws, etc. That take 84v batteries.

How to choose 84v 20a charger

When buying an 84v lithium battery pack charger for different charging purposes, it is crucial to consider several factors to ensure the right charger is chosen. The following are some of them:

• Charging voltage: Charging voltage is a crucial factor to consider when choosing an optional battery charger. Battery packs and batteries have a predetermined charging voltage that must be met by the charger. An inaccurate voltage can damages the charger and battery. An 84v charger is suitable for charging an 84v battery pack. Higher voltages can potentially battery pack components or overheat, while lower ones might not charge them fully.
• Current output: Current output, measured in amps, directly impacts how quickly a battery charges. A higher current output results in faster charging, while a lower current output leads to slower charging. Users should opt for a charger with higher current output. The case applies as long as the battery's capacity and charging rate can handle the increased current. For instance, an 84v 20a charger is suitable for charging a battery pack that is 84 volts and a current output of 20 amps.
• Compliant with battery chemistry: The battery's chemistry determines the charging method and voltage required. Different batteries follow different charging profiles. Lithium-ion batteries, for example, follow a constant current-constant voltage (CC-CV) charging method, while lead-acid batteries use absorption and bulk charging. Choosing a charger that complies with the battery's chemistry is crucial as it ensures compatibility and efficient charging.
• Connector type: Another important factor to consider when choosing a charger for a specific battery or battery pack is its connector type. Different chargers come with different connecting options and types, adapting to batteries' or battery packs' needs. When choosing a charger, ensure safety and efficiency by carefully considering the connecting factor type.
• Safety features: When buying an electric vehicle charger or any other type, it is highly important to ensure it has various safety features to prevent accidents and ensure safe charging. To achieve this, several factors must be considered, such as the charger's construction, design, and rated voltage. Among the safety features that enhance the safe charging of the batteries are short circuit protection, over current protection, over voltage protection, thermal management, and battery management system.

Q & A

Q: How long does it take an 84V charger to charge a car?

A: It usually takes an 84V lithium charger from 0 to 100% in 50 minutes to 1 hour, depending on the battery's amp hour capacity. Charging time depends on the AHT (Amp hour capacity). For example, a 20Ah battery pack takes around 4 hours to charge at 4 amps.

Q: What is the difference between 48V and 84V charging systems?

A: Electric vehicles and batteries usually use a 48V charging system, while 84V charging systems are used for fast chargers. EVs and batteries with 84V systems can take less time to charge than those with 48V systems.

Q: What does the voltage mean on a fast charger?

A: The voltage value indicates the number of battery banks being charged and the voltage the batteries are charged at. Higher voltage means a faster charging rate if the controller and batteries can handle it.

Q: What does 84V mean on a battery?

A: 84V means there are 84 volts in the battery. This value depends on the battery's state of charge. The minimum voltage of a fully charged battery is 84V, and the maximum is 69.6V when it's dead. A fully charged battery should read 84 volts, and at 80 volts, it can still be used.

Q: What does an 84V battery charger do?

A: An 84V battery charger can charge batteries with 84 volts. It is a type of fast charger that charges electric vehicle batteries, golf cart batteries, and industrial equipment batteries. These chargers regulate the current flow to avoid damaging the battery.