Your AGM battery usually lasts 3 to 7 years. Check its age, performance, and discharge state. Signs of aging include reduced capacity and longer charging times. Proper battery maintenance, like avoiding deep discharge, helps extend lifespan. If you’re unsure, consult a professional for advice on replacement indicators or care.
Aging AGM batteries often exhibit sluggish performance in extreme temperatures, either hot or cold. Inspecting the terminals for corrosion can also provide insight; corrosion may signal that the battery is nearing the end of its lifespan. Regular maintenance can help prolong an AGM battery’s life, but if these signs are evident, it may be time for replacement.
For optimal performance, consider ways to choose a dependable replacement. Evaluating specifications, proper sizing for your needs, and selecting high-quality brands are crucial steps. Understanding battery warranties and performance ratings can also aid in decision-making. In the following section, we will explore effective replacement tips and maintenance strategies to maximize your AGM battery’s longevity and efficiency.
What Are the Common Signs of Aging in AGM Batteries?
The common signs of aging in AGM batteries include decreased capacity, increased internal resistance, physical deformation, leakage, and reduced charging efficiency.
- Decreased capacity
- Increased internal resistance
- Physical deformation
- Leakage
- Reduced charging efficiency
The signs of aging in AGM batteries can manifest in various ways. Each sign indicates different issues that may require attention. Understanding these signs can help maintain battery health and decide when to replace the battery.
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Decreased Capacity:
Decreased capacity in AGM batteries refers to the reduced ability to hold and deliver electrical charge over time. This decline often results from chemical reactions within the battery that degrade its components. According to a study by Zhang et al. (2021), capacity loss can begin after 500 cycles under standard operating conditions. For instance, a battery rated at 100Ah may only deliver 80Ah after aging, leading to performance issues in applications requiring reliable power. -
Increased Internal Resistance:
Increased internal resistance indicates that the battery struggles to allow current flow. As AGM batteries age, their internal chemical structures can change, leading to resistance growth. According to the Journal of Power Sources (Liu, 2020), internal resistance can increase significantly after prolonged use, resulting in heat generation and energy loss. This inefficiency may cause the battery to heat up during discharge, potentially leading to premature failure. -
Physical Deformation:
Physical deformation in AGM batteries can be evident through bulging, cracks, or swelling in the battery casing. These changes can occur due to heat, overcharging, or prolonged use. The Battery University article of 2019 emphasizes that physical deformations compromise the structural integrity of the battery. This issue not only affects functionality but also raises safety concerns, as severe deformation can lead to leakage or rupture. -
Leakage:
Leakage of electrolyte is a critical sign of aging in AGM batteries. Though AGM batteries are designed to be maintenance-free and sealed, aging can lead to electrolyte deterioration. If the battery develops cracks or failures at the seal, electrolyte leakage can occur, damaging surrounding components. According to Battery University, such leakage may necessitate immediate replacement due to safety hazards associated with the corrosive electrolyte. -
Reduced Charging Efficiency:
Reduced charging efficiency indicates that the AGM battery takes longer to charge fully. The efficiency decrease can be caused by increased internal resistance, loss of active material, or improper charging practices over time. Research by Evergreen (2020) shows that an aged battery might only achieve 70% of its original charging speed, causing delays in applications relying on timely energy replenishment. Regular monitoring can help identify this issue early, promoting optimal battery usage strategies.
These five core signs clarify how aging affects AGM batteries, enabling proactive battery management and planning for replacements.
How Can I Identify Symptoms That Indicate My AGM Battery Is Losing Its Charge?
You can identify symptoms indicating that your AGM battery is losing its charge by observing performance issues, physical signs, and testing results.
Performance issues may manifest when starting the vehicle. A sluggish start often indicates insufficient power to engage the engine. Additionally, dim lights and slow electronics signify the battery may struggle to provide adequate energy.
Physical signs can be more evident. Swelling or bulging of the battery case is a warning that the battery may have internal damage. Also, leaks or corrosion around the terminals suggest deterioration, which can impact performance and safety.
Testing results provide clear indicators. A voltage reading of 12.4 volts or lower with a multimeter indicates a discharged battery. During operation, a reading below 13.5 volts can signify the battery is not charging properly. Regularly using a hydrometer can assess the specific gravity of the electrolytes. A low specific gravity reading points to decreased charge capacity.
According to a study by the Battery Council International (BCI), batteries that show one or more of these symptoms are at risk of failure, and timely intervention can extend battery life.
What Warning Signs Suggest My AGM Battery Might Be Nearing Its Lifespan Limit?
Warning signs that suggest your AGM battery might be nearing its lifespan limit include:
- Reduced Capacity
- Swelling or Bulging
- Difficulty Starting Devices
- Increased Self-Discharge Rate
- Corrosion on Terminals
- Expiry Date Approaching
Understanding these signs can help you take timely action.
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Reduced Capacity: Reduced capacity refers to the battery’s inability to hold a charge effectively. As AGM batteries age, their overall energy storage diminishes. Regular voltage tests can reveal this issue, with a healthy battery usually showing a voltage of 12.6 volts or higher. Studies indicate that batteries under 12.4 volts may be nearing the end of their useful life (Carter, 2021).
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Swelling or Bulging: Swelling or bulging occurs when batteries develop physical deformities. This sign often results from internal gas buildup due to overcharging or thermal abuse. A bulging battery poses safety risks and should be replaced immediately. Some manufacturers highlight that a swollen battery should not be ignored as it can lead to leaking or catastrophic failure (Johnson, 2020).
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Difficulty Starting Devices: Difficulty starting devices signifies a problem with the battery’s power output. AGM batteries are commonly used in vehicles and equipment, and a noticeable delay or failure to start can indicate a weakening battery. Regular engine or device testing can help detect this early. Experts recommend replacing the battery upon repeated starting issues (Smith, 2023).
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Increased Self-Discharge Rate: Increased self-discharge rate is when a battery loses charge more quickly than expected. New AGM batteries should hold their charge for weeks without use. If routine checks show rapid drop-offs, it may signal a compromised battery. Research shows that older batteries can lose up to 5% of their charge daily (Davis, 2022).
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Corrosion on Terminals: Corrosion on terminals is visible damage often arising from electrolyte leaks or chemical reactions. While some surface corrosion can be cleaned, extensive buildup may indicate deeper issues with the battery. Manufacturers recommend regular inspection and maintenance of terminal connections (Thompson, 2021).
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Expiry Date Approaching: Expiry date approaching refers to the battery’s manufacturer’s estimated operational lifespan, typically 3 to 5 years for AGM batteries. Checking this date can help preemptively replace aging batteries before they fail. Battery life often correlates with usage, environmental conditions, and maintenance practices (Garcia, 2023).
Keeping track of these warning signs ensures that your systems operate smoothly and safely, prolonging the life of your devices.
How Does Temperature Impact the Lifespan of My AGM Battery?
Temperature significantly impacts the lifespan of your Absorbent Glass Mat (AGM) battery. AGM batteries function best in moderate temperatures. High temperatures can accelerate chemical reactions within the battery, leading to faster degradation of materials. This degradation shortens the overall lifespan. Specifically, for every increase of 10°C (about 18°F), the lifespan may decrease by 50 percent.
Conversely, low temperatures can reduce the battery’s capacity and efficiency. In cold conditions, the chemical reactions slow down, which reduces output power. This means the battery cannot provide enough energy to support devices as efficiently.
For optimal battery performance, maintain a temperature range between 20°C to 25°C (68°F to 77°F). If you keep your AGM battery within this range, you will likely maximize its lifespan. Regularly monitor the battery’s environment and take corrective actions if necessary to preserve its health.
What Are the Ideal Temperature Ranges for Optimal AGM Battery Performance?
The ideal temperature range for optimal AGM (Absorbent Glass Mat) battery performance is between 20°C to 25°C (68°F to 77°F). Outside this range, battery efficiency and longevity can decline.
- Recommended temperature range: 20°C to 25°C (68°F to 77°F)
- Maximum operating temperature: 40°C (104°F)
- Minimum operating temperature: -20°C (-4°F)
- Temperature effects: performance degradation, lifespan reduction
- Optimal maintenance practices: regular temperature monitoring, avoiding extreme conditions
Understanding AGM battery performance requires an awareness of how temperature impacts these batteries.
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Recommended Temperature Range:
AGM battery performance is greatest when temperatures are maintained between 20°C to 25°C (68°F to 77°F). At this range, the chemical processes occur efficiently, ensuring maximum energy delivery and recharge rates. -
Maximum Operating Temperature:
The maximum operating temperature for AGM batteries is about 40°C (104°F). Exceeding this temperature can lead to overheating, which causes thermal runaway and can severely damage the battery. This range should be avoided indoors and in automotive applications, where heat can accumulate. -
Minimum Operating Temperature:
The minimum operational threshold for AGM batteries is -20°C (-4°F). At this temperature, battery performance can drop significantly. Cold conditions can lead to decreased capacity, meaning the battery may not deliver the necessary energy when required. -
Temperature Effects on Performance:
Temperature directly affects AGM battery performance. Higher temperatures accelerate the battery’s discharge rate. Conversely, lower temperatures reduce the capacity and starting power. The US Department of Energy highlights that for every 1°C increase in temperature, the battery’s lifespan may decrease by approximately 10%. -
Optimal Maintenance Practices:
Maintaining AGM batteries requires proactive management of their operating environment. Regularly monitoring temperatures and ensuring proper ventilation can help mitigate the effects of extreme temperatures. It is advisable to install the battery in locations where temperature extremes are minimized, contributing to longer service life.
By understanding these critical aspects, users can maximize the performance and longevity of their AGM batteries.
What Factors Can Accelerate the Aging Process of My AGM Battery?
Factors that can accelerate the aging process of your AGM battery include exposure to high temperatures, frequent deep discharges, insufficient charging, vibration, and lack of maintenance.
- Exposure to high temperatures
- Frequent deep discharges
- Insufficient charging
- Vibration
- Lack of maintenance
Understanding these factors can help you take proactive steps to maintain the performance and lifespan of your AGM battery.
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Exposure to High Temperatures: Exposure to high temperatures accelerates aging in AGM batteries. AGM batteries operate best at moderate temperatures. The ideal range is between 20°C to 25°C (68°F to 77°F). Prolonged exposure to heat can lead to increased evaporation of the electrolyte and can damage internal components. According to a study by the Electric Power Research Institute in 2016, for every 10°C increase in temperature, the life of an AGM battery can reduce by approximately 50%. This shows the significant impact of thermal stress on battery durability.
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Frequent Deep Discharges: Frequent deep discharges can result in damage to AGM batteries. These batteries are designed to withstand partial discharges but prolonged deep discharging can lead to sulfation, a condition where lead sulfate crystals form on the battery plates. This makes recharging less efficient. Research conducted by Chen et al. (2020) indicated that regularly discharging an AGM battery below 50% state of charge can shorten its lifespan by about 30%. Using the battery within its recommended discharge limits can help prolong its life.
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Insufficient Charging: Insufficient charging can adversely affect AGM batteries. AGM batteries require a complete charge for optimal performance and longevity. Inadequate charging modes can leave the battery in a partially charged state, promoting sulfation and grid corrosion. The Society of Automotive Engineers (SAE) notes that a proper charging voltage range is crucial for AGM batteries. Incomplete charging can decrease capacity by as much as 20% over time.
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Vibration: Vibration can lead to mechanical stress on AGM batteries, reducing lifespan. Batteries installed in environments with high vibration should be isolated or secured properly. The International Electrotechnical Commission (IEC) states that excessive vibration can loosen internal connections and lead to premature failure. Ensuring that the battery is securely mounted can minimize this risk, as highlighted in various automotive battery maintenance evaluations.
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Lack of Maintenance: Lack of maintenance negatively impacts AGM battery lifespan. AGM batteries require minimal maintenance compared to other types, but regular checks for corrosion and tight connections are essential. According to a study by the University of California, batteries that underwent routine maintenance had a lifespan 2.5 times longer than those that did not. Regular checking of voltage and cleaning terminals can help ensure the battery operates efficiently.
By understanding these factors, you can implement strategies to enhance the performance and longevity of your AGM battery. Proper environmental management, usage, and maintenance practices are key to preventing premature aging.
Why Is Overcharging Detrimental to My AGM Battery’s Lifespan?
Overcharging an Absorbent Glass Mat (AGM) battery is detrimental to its lifespan due to chemical reactions and heat generation that can damage the battery structure. Overcharging occurs when the charging voltage exceeds the battery’s capacity, leading to degradation over time.
According to the Electrical and Electronics Engineers (IEEE), “Overcharging refers to continuously supplying voltage beyond the battery’s rated capacity, causing undesirable chemical reactions within the cell.” This defines the process and highlights the risks associated with excessive charging.
The underlying causes of deterioration from overcharging are rooted in excessive heat and gas generation. AGM batteries are sealed and contain a limited amount of electrolyte. When overcharged, the internal temperature rises, and gases such as hydrogen are produced, which can lead to excess pressure. This can cause the battery to leak or even rupture in severe cases. Additionally, the formation of lead sulfate crystals can occur, reducing the battery’s overall efficiency.
Heat generation primarily refers to an increase in temperature within the battery, which can accelerate chemical reactions. High temperatures can also increase the rate of evaporation of the electrolyte, leading to dry cells. Over time, this results in decreased capacity and efficiency.
Specific conditions contributing to overcharging include using the incorrect charger, setting excessive voltage limits, or prolonged charging cycles beyond optimal durations. For example, if a user continuously charges an AGM battery with a charger designed for a different battery type, such as flooded lead-acid batteries, the higher voltage can damage the AGM unit. Another example is leaving the battery connected to a charger after it has reached full capacity, which can lead to gradual but significant deterioration.
In summary, overcharging an AGM battery significantly shortens its lifespan by inducing harmful reactions, increasing internal temperatures, and causing physical damage. Тaking care to use the proper charging equipment and monitoring charge levels can help maintain the health of an AGM battery.
How Can Deep Discharging My AGM Battery Potentially Shorten Its Lifespan?
Deep discharging an AGM (Absorbent Glass Mat) battery can significantly shorten its lifespan due to several damaging effects.
AGM batteries are designed to operate within specific voltage ranges. When deep discharging occurs, the battery experiences the following issues:
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Sulfation: During deep discharge, lead sulfate crystals form on the battery plates. If the battery remains in a discharged state for too long, these crystals may harden and reduce the battery’s capacity to hold a charge. According to a study by H. M. Blincoe, 2020, sulfation is a leading cause of premature battery failure.
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Reduced Cycle Life: AGM batteries are rated for a certain number of charge and discharge cycles. Deep discharging regularly shifts the battery towards its lower limits, drastically reducing the number of cycles it can endure. Data from a study by P. Chen, 2021, indicates that each deep cycle can reduce the usable life of the battery by up to 30% compared to shallow discharges.
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Thermal Stress: Deep discharging generates excess heat within the battery, leading to thermal stress. This stress can damage internal components, including the separators and plate materials. Insufficient cooling or ventilation exacerbates this issue, as highlighted in research by D. Smith, 2019, which states that overheating can lead to a rapid decline in battery performance.
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Voltage Swings: Frequent deep discharges can also lead to large voltage swings. Lithium-ion batteries can handle these swings better due to their chemistry, whereas AGM batteries may suffer damage and reduced efficiency. A study by R. A. Kumar, 2020, found that excessive voltage drops can lead to irreversible damage in AGM batteries, reducing overall capacity.
In summary, deep discharging an AGM battery leads to sulfation, reduced cycle life, thermal stress, and harmful voltage swings, all of which can shorten its lifespan considerably. Regularly maintaining the battery within its specified range can help prolong its operational life.
When Is It Time to Replace My AGM Battery?
When it is time to replace your AGM battery, look for specific signs of aging. First, check for a significant drop in performance. If your device fails to start or shows weak power, it may indicate battery fatigue. Second, monitor the age of the battery. Generally, AGM batteries last between three to five years. If your battery approaches this age, consider a replacement. Third, look for physical signs of damage. Bulges, leaks, or corrosion on terminals signal that the battery is failing. Fourth, perform voltage tests. A fully charged AGM battery should read about 12.7 volts or higher. Readings below this indicate deterioration. Lastly, consider your usage patterns. Frequent deep discharges can shorten battery life. If you notice these signs, it is advisable to replace your AGM battery to ensure optimal performance.
What Factors Should Prompt Me to Replace My AGM Battery?
To determine when to replace your AGM battery, consider factors like performance issues, physical damage, age, and maintenance history.
- Declining performance
- Physical damage
- Age of battery
- Limited warranty coverage
- Frequent deep discharges
Understanding these factors can help ensure optimal battery performance.
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Declining Performance: Declining performance in an AGM battery manifests as reduced capacity or inability to hold a charge. This can happen due to internal corrosion or sulfation, a process where lead sulfate crystals develop, diminishing the battery’s efficiency (Battery University, 2023). For example, if your battery regularly fails to start your vehicle or requires excessive charging time, it may be time to replace it.
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Physical Damage: Physical damage includes cracks, leaks, or swelling. Such issues can indicate internal failure or external factors causing harm, such as extreme temperatures. According to the Consumer Product Safety Commission, damaged batteries can lead to leakage of harmful substances, and replacement is necessary to prevent safety hazards.
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Age of Battery: The age of an AGM battery significantly affects performance. Most AGM batteries last between 3 to 7 years, depending on usage and maintenance (Battery Council International, 2022). Regularly checking the manufacture date can help in planning a timely replacement to avoid sudden failures.
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Limited Warranty Coverage: Many AGM batteries come with a limited warranty covering 1 to 3 years. If your warranty period is nearing an end and the battery shows signs of wear, consider replacing it to ensure reliable power supply, especially for critical applications.
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Frequent Deep Discharges: Frequent deep discharges can accelerate aging in AGM batteries. Deep discharge occurs when the battery’s charge level falls below a safe limit, which can reduce its lifespan significantly. The Battery Research Institute states that maintaining a charge level above 50% is ideal for longevity.
Addressing these factors will help you maintain battery efficiency and safety. Regular checks and timely replacements will contribute to a reliable power source.
What Maintenance Practices Can Help Extend the Life of My AGM Battery?
To extend the life of your AGM (Absorbent Glass Mat) battery, it is important to follow effective maintenance practices. Regular care can significantly prolong battery lifespan and improve performance.
Key maintenance practices to extend the life of your AGM battery include:
1. Keep the battery clean.
2. Monitor the charge level.
3. Use a compatible charger.
4. Avoid deep discharges.
5. Maintain optimal temperature.
6. Store properly when not in use.
7. Conduct regular inspections.
To understand these practices better, let’s delve into each one in detail.
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Keep the battery clean:
Keeping the battery clean involves removing dust, dirt, and corrosion from the terminals and casing. This practice prevents poor electrical connections and reduces the risk of short-circuits. According to a study by Battery University, dirt and grime can create resistance, affecting overall battery efficiency. Regularly wiping the battery with a damp cloth can keep it in good condition. -
Monitor the charge level:
Monitoring the charge level means checking the battery regularly to ensure it remains within the optimal range. AGM batteries should generally be maintained between 50% and 100% charge. Keeping them fully charged helps prevent sulfation, a damaging process whereby lead sulfate crystals build up on the battery plates. The National Renewable Energy Laboratory (NREL) suggests that maintaining proper charge levels can significantly lengthen battery life. -
Use a compatible charger:
Using a compatible charger is crucial for AGM batteries as using an inappropriate charger can cause damage. AGM batteries require specific charging voltages and currents. An excellent choice is a smart charger that adjusts according to the battery’s needs. Research by the Institute of Electrical and Electronics Engineers (IEEE) indicates that using the correct charger can enhance the lifespan by preventing overcharging, which can lead to overheating. -
Avoid deep discharges:
Avoiding deep discharges means preventing the battery from being drained below its recommended threshold. AGM batteries can withstand partial discharges better than flooded batteries, yet consistently discharging below 50% can reduce overall battery life. According to a review by the Journal of Power Sources, regular deep discharges can shorten the number of cycles that a battery can undergo before it needs replacement. -
Maintain optimal temperature:
Maintaining optimal temperature involves keeping the battery in a suitable environment, ideally between 50°F and 86°F (10°C and 30°C). Extreme temperatures can lead to increased wear and potential failure of the battery. The Battery Council International states that high temperatures can accelerate chemical reactions within the battery, leading to premature aging and performance issues. -
Store properly when not in use:
Storing properly when not in use involves placing the battery in a cool, dry location and ensuring it is fully charged. If you will not use the battery for an extended period, check its state of charge periodically and recharge as necessary. Conflicting opinions suggest some users may prefer to leave their batteries partially charged, but it is safer to keep them fully charged. -
Conduct regular inspections:
Conducting regular inspections includes checking for any physical damage, loose connections, or signs of leakage. Regular assessments can help identify potential issues early on. A study by the International Battery Association found that routine inspections can increase the operational lifespan and prevent unexpected failures.
In conclusion, implementing these maintenance practices can help you maximize the lifespan and efficiency of your AGM battery. Regular care not only ensures optimal performance but also saves you from premature replacement costs.
How Can Regular Maintenance Keep My AGM Battery in Optimal Condition?
Regular maintenance keeps your AGM (Absorbent Glass Mat) battery in optimal condition by ensuring it operates efficiently, prolongs its lifespan, and maintains safety. This maintenance includes regular inspections, cleaning, and monitoring of the battery’s performance.
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Regular inspections: Routine checks help identify issues early. According to the Battery Council International (2021), inspecting connections and terminals prevents corrosion and maintains optimal performance.
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Cleaning: Keeping the battery free from dirt and corrosion is essential. A clean surface allows for better connections and reduces the risk of short circuits. A study by Frankfurt et al. (2019) highlights that clean terminals improve the efficiency of energy transfer.
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Monitoring performance: Keeping track of voltage levels is crucial. AGM batteries typically operate at a voltage of around 12.7 volts when fully charged. Regularly checking this can prevent situations of deep discharge, which can damage the battery. The National Renewable Energy Laboratory (2020) found that discharging below 50% can significantly reduce the lifespan of AGM batteries.
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Proper charging: Using a compatible charger is critical. Overcharging or undercharging can lead to battery failure. Studies show that maintaining the battery charge between 50% and 100% can maximize lifespan and performance (Saeed et al., 2022).
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Temperature regulation: AGM batteries perform best in moderate temperatures. Exposure to extreme heat or cold can diminish battery life. According to the Electric Power Research Institute (2018), maintaining a temperature range of 32°F to 104°F (0°C to 40°C) is ideal for AGM batteries.
By following these maintenance steps, you can ensure that your AGM battery remains in top condition, providing reliable power for your needs.
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