GSP-EW 12V 72A
Lithium Iron Phosphate batteries offer fast, efficient charging and maintain a stable discharge rate. They experience minimal capacity loss over time, ensuring long-term performance and reliability in demanding applications.
Battery capacity testing ensures the rated energy output aligns with real-world performance. Through precise measurement under various load conditions, we guarantee product consistency and customer trust.
GSP batteries are built with environmentally responsible materials and offer longer life cycles with minimal waste. Designed for clean energy applications, they reduce carbon footprint and support a greener tomorrow.
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01. High-end lithium iron phosphate cylindrical cell with enhanced stability
It is made of high-quality cylindrical cells with high durability and safety, and has very low self-discharge and energy loss rates, making it economical and highly efficient.
02. Built-in BMS
The BMS circuit has a built-in management system circuit that controls the battery pack, safely controlling the battery pack including overcharge protection, overdischarge protection, short circuit protection, overcurrent protection, and reverse charge protection.
03. Components
User Manual (Quality Warranty / 2 Year Quality Warranty Period)
※ Lithium iron phosphate battery features
01. The most economical and efficient battery
Lithium iron phosphate batteries have a lifespan of about 10 times longer than lead-acid batteries of the same capacity and have about twice the energy density per weight.
In addition, there is no memory effect, so there is no loss of capacity, and fast charging and low natural discharge rate enable long-term use, making it an efficient and economical battery used in various fields.
02. High safety and durability
It is the safest against fire and explosion among existing batteries and does not emit flammable gases.
Its durability is excellent as there is no loss of weight even in hot summers and extreme winters (-20℃ to 60℃).
03. Eco-friendly, non-toxic future battery
The lithium iron phosphate battery is safe as it uses eco-friendly raw materials that do not contain high concentrations of sulfuric acid or potassium hydroxide.
In addition, there is no risk of hydrogen gas leaking when overcharging, and performance does not drop drastically in high or low temperature environments, so there is a low risk of explosion.
| Model | EW 12V 72A |
| Rated voltage | 12.8V |
| Capacity | 72Ah 922Wh |
| Charging voltage | 14.2V |
| Recommended Charge current | 36A |
| Recommended Discharge current | 36A |
| Max Charging current | 72A |
| Max Discharging current | 72A |
| Case / Weight | ABS & PC / About 8.25kg |
| Size(L x W x H) | 229 x 138 x 208 |
LiFePO₄ batteries are widely used in electric vehicles, solar energy storage, medical equipment, and industrial machinery due to their high thermal stability, long cycle life (≥2000 cycles), and superior safety profile compared to other lithium-ion chemistries.
LiFePO₄ cells offer consistent voltage discharge curves and minimal self-discharge (<3%/month), making them ideal for standby systems, UPS, telecom towers, and advanced electronics such as drones and electric mobility devices.
LiFePO₄ batteries are a key enabler in renewable integration, with
LiFePO₄ batteries require a dedicated charger, and chargers for general lithium-ion or lead-acid batteries have different voltage profiles, which can cause overcharge or undercharge. LiFePO₄ batteries typically require a constant voltage charge of 3.65V per cell, and a CC/CV (constant current/constant voltage) charging method should be applied accordingly. The most stable and efficient charging can be expected when the charger output current is within 0.2 to 0.5 C of the battery capacity. An unsuitable charger can lead to cell damage, performance degradation, BMS trigger, or safety accidents.
Keep charge voltage below 3.65V and discharge voltage above 2.5V per cell to protect battery health. Always use a BMS to prevent overcharge, over-discharge, and short circuits. Operate within -20–45°C, and store at ~50% SOC in a cool place for long-term storage. Periodic capacity tests and cell balancing are essential to maintain long-term performance.
Charging time depends on the battery’s capacity (Ah) and the charger’s output current (A). For instance, charging a 100Ah battery with a 10A charger would take approximately 10 hours, as it delivers 10Ah per hour. However, actual charging time may vary depending on BMS configuration, ambient temperature, and initial State of Charge (SOC).
Lithium Iron Phosphate (LiFePO₄) batteries typically support 2,000 to 5,000+ charge-discharge cycles, translating to 5 to 10 years or more under daily use. Avoiding high temperatures, overcharging, and deep discharges helps extend lifespan. Battery quality, BMS protection, and environmental conditions also significantly affect longevity.
LiFePO₄ batteries offer significantly longer cycle life (2,000–5,000 cycles) compared to lead-acid (300–500 cycles). They are lighter in weight, charge faster, and maintain a more stable voltage throughout discharge. LiFePO₄ also has superior thermal and chemical stability, reducing fire or explosion risks. Although lead-acid batteries are cheaper upfront, LiFePO₄ provides lower total cost of ownership over time due to longevity and efficiency.
LiFePO₄ batteries can be connected in parallel or series, but only when the voltage (V) and state of charge (SOC) of each cell are the same to ensure stable operation. If the SOC or voltages do not match, a critical current imbalance may occur, which may result in cell damage or BMS triggering due to overcurrent. In particular, the presence of a cell balancing circuit is important when connecting in series, and each cell must be synchronized to a full state before connecting in parallel. Connecting without prior balancing may result in reduced lifespan, overheating, and in severe cases, fire hazard.
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