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Battery Charging
Efficiently charging LiFePO4 Batteries involves a precise 2-stage algorithm known as "Constant Current/Con-
stant Voltage" (CC/CV). Following the standard LiFePO4 profile, the process entails a 0.2C Constant Current
(CC) charge up to 56.8V, followed by Constant Voltage (CV) at 56V charge until the current reduces to ≤ 0.05C.
For optimal results with a 100Ah LiFePO4 battery, we recommend adhering to these specifications:
• Recommended Max Charging Current: Ideally, the charging current should not exceed 50A (0.5C). How-
ever, when circumstances demand, a faster charge of 100A (1C) can be employed. Nonetheless, consistent
usage of the 1C charge method may lead to reduced battery lifespan and capacity due to heightened heat
generation during this process.
It's crucial to note that the utilization of chargers designed for other battery types, such as SLA and Gel chargers,
is strongly discouraged. These chargers, tailored for acid-based chemistries, often come with features like desul-
fation, equalization, and float charging, which are detrimental to LiFePO4 batteries. The built-in BMS may not
suffice to safeguard against the potential damage incurred from using such chargers.
The improper use of SLA chargers can trigger adverse effects:
• Accelerated Aging: Maintaining a LiFePO4 battery at 100% charge using the SLA float charging feature
could significantly expedite the aging and degradation process due to the constant stimulation of battery
cells.
• Polarization and Electrolyte Decay: The excess power supplied by an SLA charger can lead to material
buildup at the electrode-electrolyte interface, known as polarization, and result in electrolyte decay.
Additionally, using an SLA charger with an OCV (Open-Circuit Voltage) detection setting might damage the
battery and fail to revive an over-discharged LiFePO4 battery. The BMS will deactivate the battery for protection,
resulting in a situation where the battery is seemingly in an open-circuit state.
To prevent these issues and ensure optimal battery performance:
• Use Correct Charging Algorithm: Employ the appropriate CC/CV algorithm (56V) for LiFePO4 batteries.
SLA smart chargers lack the capability to fully charge or properly maintain LiFePO4 batteries.
Usage and Storage
1. Before Use Inspection: Before using the battery, conduct a thorough examination to ensure its integrity, free
from visible damage or structural irregularities.
2. Terminal and Other Visual Checks: Do not use the battery if terminals are bent, broken, or if the battery
exhibits any of the following conditions: abnormal heat, leaks, water exposure, severe physical or water
damage extending to the battery from the packaging, leaks, loose components, cracked casing, bloating,
melting, heavy stress, or indentation. In such instances or if there are concerns about the battery's integrity,
promptly contact our support team for expert assistance.
3. Professional Installation: For optimal performance and prevention of damage or malfunctions, it is strongly
recommended to have these battery packs installed by a professional or experienced individual. Monitor
charging and discharging during initial use, and diligently observe temperature and operational performance.
Any operational issues should be directed to our support team.
4. Proper Storage Conditions: Store the battery pack in a well-ventilated, cool, and dry environment. Avoid
stacking it under heavy objects, exposing it to high temperatures, open flames, or corrosive substances.
5. Temperature and Humidity Considerations: Store the battery within specified temperature conditions.
Maintain a recommended humidity of 60±15%.
6. Ideal Storage Capacity: Store the battery at a capacity between 40% and 60%. Every three months during
storage, follow these steps:
• Fully charge the battery.
• Discharge the battery completely.
• Recharge the battery to a capacity between 40% and 60% to prevent over-discharge during storage.
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