FAQs

Yes,Lithium-ion batteries can be charged at any time without harm. Unlike lead-acid batteries, lithium-ion batteries do not suffer from the same disadvantages when partially charged. This means users can take advantage of opportunity charging, meaning they can plug in the battery during short intervals such as lunch breaks to boost charge levels. This enables users to ensure that the battery remains fully charged throughout the day, minimizing the risk of the battery getting low during important tasks or activities.

According to the lab data, GeePower LiFePO4 Batteries are rated for up to 4,000 cycles at 80% depth-of discharge. In fact, you can use it for a longer period of time if they are cared for properly. When the capacity of the battery drops to 70% of the initial capacity, it is recommended to scrap it.

GeePower’s LiFePO4 battery can be charged in the range of 0~45℃, can work in the range of -20~55℃, the storage temperature is between 0~45℃.

GeePower’s LiFePO4 batteries have no memory effect and can be recharged at any time.

Yes, the correct use of the charger has a great impact on the performance of the battery. GeePower batteries are equipped with a dedicated charger, you must use the dedicated charger or a charger approved by GeePower technicians.

High temperature (>25°C) conditions will increase the chemical activity of the battery, but will shorten the battery life and also increase the self-discharge rate. Low temperature (< 25°C) reduces battery capacity and reduces self-discharge. Therefore, using the battery under the condition of about 25°C will get better performance and life.

All of GeePower battery pack comes together with a LCD display, which can show the battery’s working data, including: SOC, Voltage, Current, Working hour, failure or abnormality, etc.

The Battery Management System (BMS) is a crucial component in a lithium-ion battery pack, ensuring its safe and efficient operation.

Here’s how it works:

• Battery Monitoring: The BMS continuously monitors various parameters of the battery, such as voltage, current, temperature, and state of charge (SOC). This information helps determine the battery’s health and performance.
• Cell Balancing: Lithium-ion battery packs consist of multiple individual cells, and the BMS ensures that each cell is balanced in terms of voltage. Cell balancing ensures that no single cell is overcharged or undercharged, thereby optimizing the overall capacity and longevity of the battery pack.
• Safety Protection: The BMS has safety mechanisms to protect the battery pack from abnormal conditions. For example, if the battery temperature goes beyond safe limits, the BMS may activate cooling systems or disconnect the battery from the load to prevent damage.
• State of Charge Estimation: The BMS estimates the battery’s SOC based on various inputs, including voltage, current, and historical data. This information helps determine the remaining capacity of the battery and enables more accurate predictions of battery life and range.
• Communication: The BMS often integrates with the overall system, such as an electric vehicle or an energy storage system. It communicates with the system’s control unit, providing real-time data and receiving commands for charging, discharging, or other operations.
• Fault Diagnosis and Reporting: The BMS can diagnose faults or abnormalities in the battery pack and provide alerts or notifications to the system operator or user. It may also log data for later analysis to identify any recurring issues.

Overall, the BMS plays a critical role in ensuring the safety, longevity, and performance of lithium-ion battery packs by actively monitoring, balancing, protecting, and providing essential information about the battery’s status.

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If battery cells run dry, it means that they have fully discharged, and there is no more energy available in the battery.

Here’s what typically happens when battery cells run dry:

• Loss of Power: When the battery cells run dry, the device or system powered by the battery will lose power. It will stop functioning until the battery is recharged or replaced.
• Voltage Drop: As the battery cells run dry, the voltage output of the battery will drop significantly. This can result in a decrease in the performance or functionality of the device being powered.
• Potential Damage: In some cases, if a battery is completely drained and left in that state for an extended period, it may lead to irreversible damage to the battery cells. This can result in reduced battery capacity or, in severe cases, render the battery unusable.
• Battery Protection Mechanisms: Most modern battery systems have built-in protection mechanisms to prevent the cells from running dry completely. These protection circuits monitor the battery’s voltage and prevent it from discharging beyond a certain threshold to ensure the battery’s longevity and safety.
• Recharging or Replacement: To restore the battery’s energy, it needs to be recharged using an appropriate charging method and equipment.

However, if the battery cells have been damaged or degraded significantly, it may be necessary to replace the battery entirely.It’s important to note that different types of batteries have different discharge characteristics and recommended depth of discharge. It’s generally recommended to avoid fully draining the battery cells and recharge them before they run dry to ensure optimal performance and prolong the battery’s lifespan.

GeePower lithium-ion batteries offer exceptional safety features due to various factors:

• Grade A battery cells: We only use renowned brands that provide high-performance batteries. These cells are designed to be explosion-proof, anti-short circuit, and ensure consistent and safe performance.
• Battery chemistry: Our batteries utilize lithium iron phosphate (LiFePO4), which is known for its chemical stability. It also has the highest thermal runaway temperature compared to other lithium-ion chemistry, providing an extra layer of safety with a temperature threshold of 270 °C (518F).
• Prismatic cell technology: Unlike cylindrical cells, our prismatic cells have a higher capacity (>20Ah) and require fewer power connections, reducing the risk of potential issues. Additionally, the flexible bus-bars used to connect these cells make them highly resistant to vibrations.
• Electric vehicle class structure and insulation design: We have designed our battery packs specifically for electric vehicles, implementing a robust structure and insulation to enhance safety.
• GeePower’s module design: Our battery packs are designed with stability and strength in mind, ensuring good consistency and assembly efficiency.
• Smart BMS and protective circuit: Each GeePower battery pack is equipped with a smart Battery Management System (BMS) and a protective circuit. This system constantly monitors the temperature and current of the battery cells. If any potential harm or risk is detected, the system shuts down to maintain battery performance and prolong its expected lifetime.

Rest assured, GeePower’s battery packs are designed with safety as a top priority. The batteries utilize advanced technology, such as lithium iron phosphate chemistry, which is known for its exceptional stability and high burn temperature threshold. Unlike other types of batteries, our lithium iron phosphate batteries have a lower risk of catching fire, thanks to their chemical properties and stringent safety measures implemented during production. Additionally, the battery packs are equipped with sophisticated safeguards that prevent overcharging and rapid discharge, further minimizing any potential risks. With the combination of these safety features, you can have peace of mind knowing that the chances of the batteries catching fire are extremely low.

All the battery, no matter what chemical character, have the self-discharge phenomena. But LiFePO4 battery’s self-discharge rate is very low, less than 3%.

Attention 

If the ambient temperature is high; Please pay attention to the high temperature alarm of the battery system; Do not charge the battery immediately after use in a high temperature environment, you need to let the battery rest for more than 30 minutes or the temperature drops to ≤35°C; When the ambient temperature is ≤0°C, the battery should be charged as soon as possible after using the forklift to prevent the battery from being too cold to charge or prolong the charging time;

Yes, LiFePO4 batteries can be continually discharged to 0% SOC and there is no long-term effect. However, we recommend you only discharge down to 20% to maintain battery life.

Attention 

The best SOC interval for battery storage: 50±10%

GeePower Battery Packs should only be charged from 0°C to 45°C (32°F to 113°F) and discharged from -20 °C to 55° C ( -4°F to 131 °F).

This is the internal temperature.  There are temperature sensors inside the pack which monitor the operating temperature.  If the temperature range is exceeded, the buzzer will sound and the pack will automatically shut off until the pack is allowed to cool/heat to within operational parameters. 

Absolutely yes, we will provide you the online technical support and training including the basic knowledge of lithium battery, the advantages of lithium battery and the trouble shootings. The user manual will be provided to you as the same time.

If a LiFePO4 (Lithium Iron Phosphate) battery has become completely discharged or “asleep,” you can try the following steps to wake it up:

• Ensure safety: LiFePO4 batteries can be sensitive, so wear protective gloves and goggles while handling them.
• Check connections: Make sure that all connections between the battery and the device or charger are secure and free from damage.
• Check battery voltage: Use a multi-meter to check the voltage of the battery. If the voltage is below the minimum recommended level (typically around 2.5 volts per cell), skip to step 5. If it is above this level, proceed to step 4.
• Charge the battery: Connect the battery to an appropriate charger specifically designed for LiFePO4 batteries. Follow the manufacturer’s instructions for charging LiFePO4 batteries and allow sufficient time for the battery to charge. Monitor the charging process closely and ensure the charger is not overheating. Once the battery voltage reaches an acceptable level, it should wake up and start accepting a charge.
• Recovery charging: If the voltage is too low for a regular charger to recognize, you may need a “recovery” charger. These specialized chargers are designed to safely recover and revive deeply discharged LiFePO4 batteries. These chargers often come with specific instructions and settings for such scenarios, so be sure to carefully follow the instructions provided.
• Seek professional help: If the above steps do not revive the battery, consider taking it to a professional battery technician or reach out to the battery manufacturer for further assistance. Attempting to wake up a LiFePO4 battery in an improper manner or using incorrect charging techniques can be dangerous and may damage the battery further.

Remember to follow proper safety precautions while handling batteries and always refer to the manufacturer’s guidelines for charging and handling LiFePO4 batteries.

The length of time it takes to charge a Li-ion battery depends on the type and size of your charging source.Our recommended charge rate is 50 amps per 100 Ah battery in your system. For example, if your charger is 20 amps and you need to charge an empty battery, it will take 5 hours to reach 100%.

It is strongly recommended to store LiFePO4 batteries indoors during the off-season. It is also recommended to store LiFePO4 batteries at a state of charge (SOC) of approximately 50% or higher. If the battery is stored for a long time, charge the battery at least once every 6 months (once every 3 months is recommended).

Charging a LiFePO4 battery (short for Lithium Iron Phosphate battery) is relatively straightforward.

Here are the steps to charge a LiFePO4 battery:

Select an appropriate charger: Make sure you have an appropriate LiFePO4 battery charger. Using a charger that is specifically designed for LiFePO4 batteries is important, as these chargers have the correct charging algorithm and voltage settings for this type of battery.

• Connect the charger: Ensure the charger is unplugged from the power source. Then, connect the charger’s positive (+) output lead to the positive terminal of the LiFePO4 battery, and connect the negative (-) output lead to the negative terminal of the battery. Double-check that the connections are secure and firm.
• Plug in the charger: Once the connections are secure, plug in the charger to a power source. The charger should have an indicator light or display that shows the charging status, such as red for charging and green when fully charged. Refer to the charger’s user manual for specific charging instructions and indicators.
• Monitor the charging process: Keep an eye on the charging process. LiFePO4 batteries generally have a recommended charging voltage and current, so it is important to set the charger to these recommended values if possible. Avoid overcharging the battery, as it can cause damage or reduce its lifespan.
• Charge until full: Allow the charger to charge the LiFePO4 battery until it reaches full capacity. This may take several hours depending on the size and state of the battery. Once the battery is fully charged, the charger should automatically stop or enter a maintenance mode.
• Unplug the charger: Once the battery is fully charged, unplug the charger from the power source and disconnect it from the battery. Make sure to handle the battery and charger with care, as they may become warm during the charging process.

Please note that these are general steps, and it is always advisable to refer to the specific battery manufacturer’s guidelines and the charger’s user manual for detailed charging instructions and safety precautions.

When choosing a Battery Management System (BMS) for LiFePO4 cells, you should consider the following factors:

• Cell compatibility: Ensure that the BMS you choose is specifically designed for LiFePO4 cells. LiFePO4 batteries have a different charging and discharging profile compared to other lithium-ion chemistries, so the BMS needs to be compatible with this specific chemistry.
• Cell voltage and capacity: Take note of the voltage and capacity of your LiFePO4 cells. The BMS you select should be suitable for the voltage range and capacity of your specific cells. Check the specifications of the BMS to confirm that it can handle the voltage and capacity of your battery pack.
• Protection features: Look for a BMS that offers essential protection features to ensure the safe operation of your LiFePO4 battery pack. These features may include overcharge protection, over-discharge protection, overcurrent protection, short circuit protection, temperature monitoring, and balancing of cell voltages.Communication and monitoring: Consider whether you need the BMS to have communication capabilities. Some BMS models offer features such as voltage monitoring, current monitoring, and temperature monitoring, which can be accessed remotely through a communication protocol like RS485, CAN bus, or Bluetooth.
• BMS reliability and quality: Look for a BMS from a reputable manufacturer known for producing reliable and high-quality products. Consider reading reviews and checking the manufacturer’s track record for delivering robust and dependable BMS solutions.Design and installation: Ensure that the BMS is designed for easy integration and installation into your battery pack. Consider factors such as the physical dimensions, mounting options, and wiring requirements of the BMS.
• Cost: Compare the prices of different BMS options, keeping in mind that quality and reliability are important factors. Consider the features and performance you require and find a balance between cost-effectiveness and meeting your needs.

Ultimately, the specific BMS you choose will depend on the specific requirements of your LiFePO4 battery pack. Ensure that the BMS meets the necessary safety standards and has the features and specifications that align with your battery pack’s needs.

If you overcharge a LiFePO4 (Lithium Iron Phosphate) battery, it can lead to several potential consequences:

• Thermal runaway: Overcharging can cause the temperature of the battery to rise significantly, potentially leading to a thermal runaway situation. This is an uncontrolled and self-reinforcing process where the battery temperature continues to increase rapidly, potentially leading to the release of high amounts of heat or even fire.
• Reduced battery lifespan: Overcharging can significantly reduce the overall lifespan of a LiFePO4 battery. Continuous overcharging can cause damage to the battery cell, leading to a decrease in capacity and overall performance. Over time, this can result in a shortened battery lifespan.
• Safety hazards: Overcharging can increase the pressure inside the battery cell, which can ultimately result in the release of gas or electrolyte leakage. This can pose safety hazards such as the risk of explosion or fire.
• Loss of battery capacity: Overcharging can cause irreversible damage and loss of capacity in LiFePO4 batteries. The cells may suffer from increased self-discharge and reduced energy storage capabilities, affecting their overall performance and usability.

To prevent overcharging and ensure the safe operation of LiFePO4 batteries, it is recommended to use a proper Battery Management System (BMS) that includes overcharge protection. The BMS monitors and controls the charging process to prevent the battery from being overcharged, ensuring its safe and optimal operation.

When it comes to storing LiFePO4 batteries, follow these guidelines to ensure their longevity and safety:

Charge the batteries: Before storing LiFePO4 batteries, make sure they are fully charged. This helps prevent self-discharge during storage, which can cause the battery voltage to drop too low.

• Check the voltage: Use a multi-meter to measure the voltage of the battery. Ideally, the voltage should be around 3.2 – 3.3 volts per cell. If the voltage is too high or too low, it may indicate a problem with the battery, and you should seek professional help or contact the manufacturer.
• Store at a moderate temperature: LiFePO4 batteries should be stored in a cool, dry place with a moderate temperature between 0-25°C (32-77°F). Extreme temperatures can degrade the battery’s performance and reduce its lifespan. Avoid storing them in direct sunlight or near sources of heat.
• Protect from moisture: Ensure that the storage area is dry, as moisture can damage the battery. Store the batteries in airtight containers or bags to prevent exposure to moisture or humidity.
• Avoid mechanical stress: Protect the batteries from physical impacts, pressure, or other forms of mechanical stress. Be cautious not to drop or crush them, as it may damage the internal components.
• Disconnect from devices: If you are storing LiFePO4 batteries in devices such as cameras or electric vehicles, remove them from the devices before storage. Leaving batteries connected to devices can lead to unnecessary drain and could potentially damage the battery or the device.
• Periodically check the voltage: It is recommended to check the voltage of stored LiFePO4 batteries every few months to ensure they maintain an acceptable level of charge. If the voltage drops significantly during storage, consider recharging the batteries to avoid damage from deep discharge.

By following these storage guidelines, you can enhance the lifespan and performance of your LiFePO4 batteries.

GeePower batteries can be used more than 3,500 life cycles. Battery design life is more than 10 years.

The warranty for the battery is 5 years or 10,000 hours, whichever comes first.The BMS can only monitor the discharge time, and the users may use the battery frequently, if we use the whole cycle to define the warranty , it will be unfair for the users. So that is why the warranty is 5 years or 10,000 hours, whichever comes first.

Similar to lead acid, there are packaging instructions which must be followed when shipping. There are several options available depending on the type of lithium battery and the regulations in place:

• Ground Shipping: This is the most common method for shipping lithium batteries and is generally allowed for all types of lithium batteries. Ground shipping is typically less restrictive because it does not involve the same air transport regulations.
• Air Shipping (Cargo): If the lithium batteries are being shipped via air as cargo, there are specific regulations that need to be followed. Different types of lithium batteries (such as lithium-ion or lithium-metal) may have different restrictions. It is important to comply with the International Air Transport Association (IATA) regulations and check with the airline for any specific requirements.
• Air Shipping (Passenger): Shipping lithium batteries on passenger flights is restricted due to safety concerns. However, there are exceptions for smaller lithium batteries in consumer devices like smartphones or laptops, which are allowed as carry-on or checked baggage. Again, it is crucial to check with the airline for any limitations or restrictions.
• Sea Shipping: Sea freight is generally less restrictive when it comes to shipping lithium batteries. However, it is still essential to comply with the International Maritime Dangerous Goods (IMDG) Code and any specific regulations for shipping lithium batteries by sea.
• Courier Services: Courier services like FedEx, UPS, or DHL may have their own specific guidelines and restrictions for shipping lithium batteries.

It is important to check with the courier service to ensure compliance with their regulations.Regardless of the shipping method chosen, it is essential to package and label lithium batteries correctly according to the relevant regulations to ensure safe transport. It is also crucial to educate yourself on the specific regulations and requirements for the type of lithium battery you are shipping and consult with the shipping carrier for any specific guidelines they may have in place.

Yes, we have cooperative shipping agencies that can transport lithium batteries. As we all know, lithium batteries are still considered dangerous goods, so if your shipping agency does not have transportation channels, our shipping agency can transport them for you.