Faqs

Frequently Asked Questions (FAQs)

Welcome to the Voltpro Energy FAQs. Here you can find answers to common questions about our LiFePO4 lithium batteries, battery cells, JK Smart BMS, inverter BMS, battery customization, solar backup systems, charging, inverter communication, and warranty.

LiFePO4 Battery FAQs

1. What type of batteries does Voltpro Energy offer?

Voltpro Energy offers LiFePO4 lithium batteries in different voltage and capacity configurations for solar systems, inverters, UPS, home backup, commercial energy storage, off-grid systems and other applications.

Our current battery range includes:

- 12.8V 27Ah LiFePO4 Battery
- 12.8V 50Ah LiFePO4 Battery
- 12.8V 100Ah LiFePO4 Battery
- 12.8V 200Ah LiFePO4 Battery
- 12.8V 314Ah LiFePO4 Battery
- 25.6V 100Ah LiFePO4 Battery
- 25.6V 200Ah LiFePO4 Battery
- 25.6V 314Ah LiFePO4 Battery
- 51.2V 100Ah LiFePO4 Battery
- 51.2V 314Ah LiFePO4 Battery

Availability may vary depending on current stock.

2. What is the difference between 12V, 24V and 51.2V LiFePO4 batteries?

These are different battery-system voltage classes.

- A 12V LiFePO4 battery normally has approximately 12.8V nominal voltage and uses a 4S configuration.
- A 24V LiFePO4 battery normally has approximately 25.6V nominal voltage and uses an 8S configuration.
- A 48V-class LiFePO4 battery normally has approximately 51.2V nominal voltage and uses a 16S configuration.

The correct voltage should match the battery input range and requirements of your inverter or electrical system.

3. Which cells does Voltpro Energy use?

Depending on the battery model, Voltpro Energy uses A-Grade LiFePO4 cells from manufacturers including EVE and Gotion.

Examples include EVE 100Ah LF-100 cells and EVE 314Ah MB31 cells. The 12.8V 27Ah battery uses Gotion A-Grade cells.

Cell specifications such as capacity, internal resistance and cycle-life rating vary by model.

4. What EVE LiFePO4 cells are available from Voltpro Energy?

Voltpro Energy currently offers EVE LiFePO4 cells including:

- EVE LF-100 – 3.2V 100Ah
- EVE MB31 – 3.2V 314Ah

The EVE LF-100 is specified at 6000+ cycles with approximately 0.28mΩ internal resistance, while the MB31 314Ah cell is specified at 8000 cycles with approximately 0.19mΩ internal resistance under the stated test conditions.

5. What is the energy capacity of a LiFePO4 battery?

Battery energy is approximately calculated as:

Nominal Voltage × Ah Capacity = Nominal Energy

Examples:

- 12.8V 100Ah = 1.28kWh
- 12.8V 200Ah = 2.56kWh
- 12.8V 314Ah = 4.02kWh
- 25.6V 100Ah = 2.56kWh
- 25.6V 200Ah = 5.12kWh
- 25.6V 314Ah = 8.03kWh
- 51.2V 100Ah = 5.12kWh
- 51.2V 314Ah = 16.08kWh

Actual usable energy depends on BMS settings, depth of discharge, inverter efficiency, temperature and operating conditions.

6. How much backup can a Voltpro Energy LiFePO4 battery provide?

Backup time depends on the actual load and system efficiency.

As a general example, a 25.6V 200Ah / 5.12kWh battery may provide approximately:

Load| Approx. Backup
500W| 8–9 hours
1000W| 4–4.5 hours
1500W| 2.7–3 hours
2000W| 2–2.3 hours

Actual backup time can vary according to inverter efficiency, battery temperature, wiring, battery condition and actual appliance consumption.

7. What can a Voltpro Energy LiFePO4 battery run?

Depending on the battery capacity and inverter size, Voltpro Energy batteries can be used for:

- LED lights
- Fans
- LED TVs
- Wi-Fi routers
- CCTV systems
- Computers
- Refrigerators
- UPS systems
- Solar systems
- Home backup systems
- Commercial energy-storage systems

High-power appliances such as refrigerators, pumps, motors and air conditioners require an appropriately sized inverter with sufficient continuous and starting/surge capacity.

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BMS FAQs

8. Which BMS models does Voltpro Energy offer?

Voltpro Energy offers several JK and TDT BMS models.

Important models used or listed on our battery/BMS range include:

- JK-B1A8S10P – 100A, 1A Active Balancing
- JK-PB1A16S10P – 100A, 1A Active Balancing
- JK-BD6A24S10P – 100A, 0.6A Active Balancing
- JK-BD4A8S6P – 60A, 0.4A Balancing
- JK-B2A8S20P – 200A, 2A Active Balancing
- JK-B28S20P – 200A, 2A Active Balancing
- JK-PB2A16S20P – 200A, 2A Active Balancing
- TDT-1001 Smart Inverter BMS – up to 300A continuous, 3A Active Balancing
- TDT 4S 40A BMS – 40A

The correct BMS depends on the number of cells, battery chemistry, required current and application.

9. Which JK BMS has 1A active balancing?

Voltpro Energy offers JK BMS models with 1A active balancing, including the JK-B1A8S10P and JK-PB1A16S10P.

The JK-B1A8S10P supports 4S–8S battery packs, while the JK-PB1A16S10P is designed for 8S–16S inverter battery applications.

10. Which JK BMS has 0.6A active balancing?

The JK-BD6A24S10P is a 100A Smart BMS with 0.6A active balancing.

It supports 8S–24S battery packs and can be used for LiFePO4, lithium-ion and LTO battery applications, including suitable 24V, 48V, 60V and 72V battery systems.

11. Which JK BMS has 2A active balancing?

Several high-current Voltpro Energy battery configurations use 2A active balancing, including B2A8S20P, B28S20P and PB2A16S20P configurations.

These BMS systems are rated around 200A continuous current, with peak ratings depending on the specific model and battery configuration.

12. Which Voltpro Energy battery uses the TDT-1001 BMS?

The 51.2V 314Ah LiFePO4 Battery uses the TDT-1001 Smart Inverter BMS.

It provides:

- Up to 300A continuous current
- Up to 600A peak discharge
- 3A active balancing
- Wi-Fi
- Bluetooth
- CAN
- RS485
- UART
- RS232
- 7-inch touchscreen display

It is designed for large solar, home, commercial and energy-storage applications.

13. What is active cell balancing?

Active balancing transfers energy between individual cells to help reduce cell-voltage differences.

Voltpro Energy offers BMS systems with different balancing currents, including 0.4A, 0.6A, 1A, 2A and 3A, depending on the BMS model.

14. Can Voltpro Energy batteries communicate with solar inverters?

Selected Voltpro Energy batteries use inverter BMS systems that support communication with compatible inverters.

Depending on the BMS model, communication may include:

- CAN
- RS485
- RS232
- UART
- Bluetooth
- Wi-Fi

Actual inverter communication depends on inverter compatibility, communication protocol, cable and correct BMS/inverter settings.

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Battery-Specific FAQs

15. Which Voltpro battery is suitable for a 24V solar inverter?

Voltpro Energy offers several 24V-class LiFePO4 batteries, including:

- 25.6V 100Ah – 2.56kWh
- 25.6V 200Ah – 5.12kWh
- 25.6V 314Ah – approximately 8.03kWh

The correct capacity depends on your inverter power, load and required backup time.

16. What BMS is used in the Voltpro 24V 100Ah battery?

The 25.6V 100Ah battery uses the JK-PB1A16S10P Smart Inverter BMS.

It provides 1A active balancing and supports compatible inverter communication through CAN and RS485. The battery uses EVE Grade A 100Ah LiFePO4 cells and provides approximately 2.56kWh nominal energy.

17. What BMS is used in the Voltpro 24V 200Ah battery?

The 25.6V 200Ah battery uses the JK-B28S20P Smart BMS.

Its specifications include:

- 200A continuous current
- 350A peak discharge
- 2A active balancing
- EVE Grade A LiFePO4 cells
- Approximately 5.12kWh nominal energy

18. What BMS is used in the Voltpro 24V 314Ah battery?

The 25.6V 314Ah battery uses the JK-PB2A16S20P Inverter BMS.

It provides:

- Up to 200A charge current
- Up to 200A discharge current
- Up to 350A peak discharge
- 2A active balancing
- JK 4.3-inch touchscreen display

The battery provides approximately 8.03kWh nominal energy.

19. What BMS is used in the Voltpro 51.2V 100Ah battery?

The inverter-BMS version of the 51.2V 100Ah battery uses the JK-PB1A16S10P.

It provides:

- 100A continuous BMS current
- Up to 200A maximum discharge capability
- 1A active balancing
- CAN
- RS485
- RS232
- Bluetooth monitoring
- LED SOC indicator

The battery provides approximately 5.12kWh nominal energy.

20. What BMS is used in the Voltpro 12.8V 200Ah battery?

The 12.8V 200Ah battery uses the JK-B2A8S20P Smart BMS.

It provides:

- 200A continuous discharge
- 350A peak discharge
- 2A active balancing
- 200A maximum charging current
- Bluetooth monitoring
- 3.2-inch JK LCD display

The battery has approximately 2.56kWh nominal energy.

21. What BMS is used in the Voltpro 12.8V 314Ah battery?

The 12.8V 314Ah battery uses the JK-B2A8S20P Smart BMS with:

- 200A continuous current
- 350A peak discharge
- 2A active balancing
- JK 3.2-inch LCD display
- 200A-rated terminals

It provides approximately 4.02kWh nominal energy.

22. What BMS is used in the Voltpro 12.8V 50Ah battery?

The 12.8V 50Ah LiFePO4 battery uses the JK-BD4A8S6P Smart BMS.

It provides:

- 60A charge current
- 60A continuous discharge
- 100A peak discharge
- 0.4A cell balancing

The battery has approximately 640Wh / 0.64kWh nominal energy.

23. What BMS is used in the Voltpro 12.8V 27Ah battery?

The 12.8V 27Ah LiFePO4 battery uses a TDT 4S 40A BMS and Gotion A-Grade LiFePO4 cells.

It provides approximately 345.6Wh nominal energy and is suitable for smaller applications such as CCTV, networking equipment, Wi-Fi backup, LED lighting and small DC systems.

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Charging, Backup & Installation FAQs

24. How can I choose the right Voltpro battery for my inverter and load?

The correct battery depends on:

- Inverter voltage
- Inverter power
- Total load in watts
- Required backup time
- Charging current
- BMS requirements
- Inverter communication requirements
- Available installation space

For example, a 5.12kWh battery stores approximately twice the nominal energy of a 2.56kWh battery, so it can generally provide longer backup at the same load.

For a correct recommendation, provide your inverter model, inverter kW rating, total load in watts and required backup hours.

25. Does Voltpro Energy provide customized battery solutions?

Yes. Voltpro Energy provides battery customization according to the required:

- Voltage
- Ah capacity
- LiFePO4 cell type
- BMS
- Battery box
- Terminals
- Communication requirements
- Physical dimensions
- Application

Customized battery requirements should be confirmed before production.

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Warranty & Support

26. What warranty does Voltpro Energy provide?

Eligible Voltpro Energy battery products are covered by a 5-Year Warranty, subject to the applicable warranty terms.

The warranty is structured as:

First 2 Years – Parts Replacement Warranty

Eligible manufacturing defects may be covered through replacement of applicable defective parts after inspection and warranty approval.

Next 3 Years – Service Warranty

During years 3–5, eligible covered issues may receive inspection, troubleshooting, repair, servicing or technical assistance according to the applicable warranty conditions.

Warranty does not cover damage caused by misuse, incorrect installation, incorrect charging, incorrect BMS/inverter settings, physical damage, water damage, unauthorized modification or operation outside specified limits.

27. Does Voltpro Energy provide battery repair and upgrade services?

Yes. Voltpro Energy provides:

- Battery Repair Service
- Battery Upgrade Service
- Battery Customization Service
- BMS Installation & Replacement Service

Services are subject to inspection and the nature of the battery or BMS issue.

28. Does Voltpro Energy deliver batteries across Pakistan?

Yes. Voltpro Energy provides delivery across Pakistan through suitable courier, cargo and logistics services.

Shipping time and method depend on the product, package weight, dimensions and delivery location.

29. Can I connect Voltpro batteries in parallel?

Some Voltpro battery models support parallel connection, while others may have specific restrictions.

For example, the 25.6V 100Ah battery supports up to 10 batteries in parallel, subject to compatible BMS configuration, inverter capability, protection equipment, cabling and proper installation.

Always check the individual product specification before connecting batteries in parallel.

30. How can I get help choosing a Voltpro Energy battery?

Send Voltpro Energy the following information:

- Inverter brand and model
- Inverter power rating
- Total load in watts
- Required backup time
- Battery voltage required
- Solar panel capacity, if applicable
- Whether inverter communication is required

Our team can then recommend a suitable battery capacity and BMS configuration.