Power your freedom anytime, anywhere

GSP provides reliable lithium iron phosphate battery solutions for various environments such as camping, travel and industrial use.
From small electronic devices to large energy storage systems (ESS), we empower your daily life with reliable technology.
Product Inquiry
  • BM703_01
  • BM703_03
  • BM703_02

GSP BM703

GSP-BM703

 

Benefits of GSP Battery Meter
Accurately tracks real-time battery usage and remaining capacity for reliable monitoring.
Helps optimize energy management by displaying charge and discharge history.
Prevents unexpected power loss with early detection of low battery levels.
Compact and user-friendly design for easy installation and operation in various systems.
  • Product details
  • Product specifications
  • Product details
  • FAQ



<br /> Battery Features<br />

Charging and discharging graphs

Efficient Charging & Stable Discharging Performance

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

Accurate Capacity Testing for Reliable Performance

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.

Eco-friendly battery illustration

Eco-Friendly Power for a Sustainable Future

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.

※ CHECK!
01. Accurate Energy Monitoring
Tracks real-time voltage, current, and accumulated capacity for precise battery management.
02. Battery Health Management
Provides clear insight into charge/discharge cycles, helping extend battery lifespan.
03. Usage Visibility
Allows users to easily check remaining capacity and energy usage at a glance.
04. Prevents Overuse & Malfunction
Detects abnormal current or over-discharge, preventing battery damage in advance.
05. Data for Optimization
Offers reliable data to optimize energy usage and improve system efficiency.
Parameter Min Type Max Unit
Working Voltage 10.0 50.0 120.0 V
Working Dissipation 10.0 15.0 mA
Standby Dissipation 1.0 2.0 mA
Voltage Accuracy ±1.0 %
Current Accuracy ±1.0 %
Capacity Accuracy ±1.0 %
Backlight on Current (50A) 30 60 mA
Backlight on Current (>50A) 80 120 mA
Preset Capacity Value 0.1 9999.9 Ah
Current of 50A Sampler 0.0 50.0 75.0 A
Current of 100A Sampler 0.0 100.0 150.0 A
Current of 350A Sampler 0.0 350.0 500.0 A
Current of 500A Sampler 0.0 500.0 750.0 A
Temperature Range 0 20 35
Weight 76 g
Size (L x W x H) 94 x 61 x 18 mm
L : length / W : width / H : height

Cylindrical battery cells

Powering Every Possibility

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.

Solar-powered telecom station

Smarter Energy for Modern Applications

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.

Solar-powered smart home cutaway

Empowering Renewable Energy

LiFePO₄ batteries are a key enabler in renewable integration, with

  • Can I use any battery charger?

    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.

  • How can I use lithium iron phosphate batteries safely for a long time?

    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.

  • How is the Charging Time of a LiFePO₄ Battery Calculated?

    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).

  • How Long Does a LiFePO₄ Battery Last?

    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.

  • What is the difference between lead-acid batteries and iron phosphate batteries?

    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.

  • Is parallel or series connection freely possible?

    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.

Contact Us

If you have any questions, please leave a message online,
once we receive the question, we will reply to your message in time!