Lithium Battery
Why won’t the battery power on?
If there is no relay engagement sound after pressing and holding the power button for 3 seconds, and the BMS (Battery Management System) fails to start, please check the following:
1. Check relay wiring
Ensure the latching relay is wired correctly, with no loose connections or reversed polarity.
2. Check BMS power input
Use a multimeter to verify that there is normal voltage at the BMS input terminal.
3. Check the power button indicator light
If there is no response after holding the button for 3 seconds and the indicator light turns off immediately, the battery has failed to power on.
4. Diagnose by using a CAN box
Connect a CAN box to the battery’s debug port. While holding down the power button, use the host software to monitor the battery status, BMS fault codes, and operational workflow for further analysis.
Why can’t the battery be charged?
If the battery fails to charge using the specified charger, please troubleshoot as follows:
1. Check charger compatibility
Ensure you are using an original or recommended charger that matches the battery model.
2. Check battery voltage
Measure the total voltage using a multimeter. If the battery is in an over-discharged state (voltage below the startup threshold), it will not turn on even when the switch is pressed. Try performing a brief pre-charge (activation) using a DC power supply or a lead-acid battery charger before attempting normal charging.
3. Check charger output
Confirm that the charger output voltage is 12V to ensure it is working correctly.
4. Check communication data
Use a CAN box to capture communication data between the charger and the battery to check for anomalies.
5. Check communication interface wiring
If the battery shows no response and a communication error occurs after plugging in the charger, the connector may be wired in reverse.
Why is the LiFePO4 battery not heating?
If the ambient temperature meets the conditions for heating (charging or discharging heating) but the system fails to activate the heating function… Please perform the following checks:
1. Check the heating circuit resistance
Enter “Relay Forced Control” mode via the host computer
Disconnect relays 1, 2, and 6
Connect relays 4 and 5
2. Measure resistance using a multimeter
– Between P+ and Series + (Unit A)
– Between Series – and P- (Unit B)
Normal range: 2.00–3.00.
If no resistance is detected, open the enclosure to inspect the internal circuitry.
3. Check the heating relays
After forcing the relays to close, check for continuity across the relay terminals in Unit A and Unit B. If there is no continuity, replace the relay.
4. Check the heating cables
Ensure all cable connections are secure. Use a multimeter to check for continuity between both ends of the cables. If not conductive, inspect the individual connection points.
UPS
What causes communication, voltage, or temperature self-test failures?
Possible causes:
1. Wiring issues
2. Incorrect DIP switch settings
3. Poor network cable connections
Solutions:
1. Check the network cables between CBMS units to rule out cable or hardware faults. If the LCD displays a CBMS communication error, it is usually caused by incorrect wiring between the CBMS and GBMS.
2. Verify the IP address DIP switch settings for the parallel-connected CBMS units, and ensure that the CAN/485 terminal resistors on the GBMS and the CBMS of the last battery cabinet are enabled.
3. Check the network cable connections between units and inspect for poor contact or loose connections.
Why won’t the battery charge?
Possible causes:
1. Charger or UPS motherboard malfunction
2. Battery protection mechanism triggered by over-discharge (voltage dropped below the cutoff threshold)
3. BMS (Battery Management System) failure
Solutions:
1. Check if the charger’s output parameters match the battery specifications
2. Attempt to activate the battery using professional equipment
3. Contact the after-sales service department to inspect the BMS or replace the battery
Why is the battery runtime short or the capacity dropping rapidly?
1. Possible causes
– Battery aging due to prolonged overcharging or over-discharging
– Performance affected by extreme temperatures
– Cycle count approaching the battery’s design lifespan
2. Usage recommendations
– Avoid deep discharges to extend battery life
– Maintain an operating temperature of approximately 25℃ ±5℃
3. Next steps
If capacity drops significantly, please contact the manufacturer for professional inspection and maintenance.
Common Questions
How to properly store batteries?
To ensure safety and extend battery life, please follow the following guidelines:
1. Store in a dry, cool, and well ventilated place. Avoid direct sunlight and heat sources. Suggested temperature: 5℃-25℃; Humidity ranges from 45% to 75%.
2. Charging level:
Lithium battery: stored at 30% -60% of electricity capacity; Check the voltage every 6 months and recharge if necessary.
3. Safety: Prevent short circuits through insulated terminals. Stay away from metal objects. Avoid falling and strong impact.
4. Separation: Clearly label and separate old and new batteries. Timely recycling of waste batteries.
5. Packaging: Use original or insulated packaging to prevent dust, moisture, and physical damage.
How to apply for after-sales service?
You can apply for after-sales service through any of the following methods:
1. Apply online to access our official website’s contact us page, fill in product details and problem description. Our customer service will contact you within 1 working day.
2. For email application, please send the product model, fault description, and your contact information to service@ostar-energy.com .
To expedite the processing speed, please provide the following information as much as possible: product model, purchase date, fault symptoms, on-site photos or videos (if available). We will arrange services according to the warranty policy.
What should be noted when transporting batteries?
Ensure that the battery passes UN38.3 testing before shipment, is packaged in shock resistant and short-circuit resistant materials, and labeled appropriately. The charging capacity of lithium batteries for air transportation shall not exceed 30%, and complete transportation documents are required. Do not transport damaged or swollen batteries.