TEZE LiFePO4 Lithium Iron Phosphate Battery Instruction Manual

TEZE LiFePO4 Lithium Iron Phosphate Battery

Product Information

• Specifications
  • Origin: TezePower
  • Chemistry: LiFePO4
  • Voltage: 12.8V
  • Capacity: 300Ah
  • BMS: 200A
  • Dimensions: L20.55W10.59H8.66inch
  • Shell Color: Black
• Product Overview
  • The Lithium Iron Phosphate (LiFePO4) Battery from TezePower is a high-quality battery suitable for various applications.
  • It offers a combination of 12.8V and 300Ah capacity with a durable plastic shell in black colour.
• General Information
  • Operating Voltage: 2560W
  • Charging Voltage: Not specified
  • Max Continuous Load Power: 200A
  • Max Continuous Charge/Discharge Current: Not specified
• Usage Instructions
  • Step 1: Contact TezePower at service@tezepower.com to activate the FIVE-YEAR WARRANTY.
  • Step 2: Pull out Insulating Plugs.
  • Step 3: Tightly screw in Post Bolts. Ensure the post bolts are securely tightened to prevent heat buildup and damage to the battery.
  • Step 4: Put on Insulating Covers to prevent short circuits caused by metal objects touching the terminals simultaneously.
  • Step 5: Test the Battery Voltage with a Multimeter to ensure proper voltage readings.

FAQs

• Q: What should I do if I encounter issues with the battery?
  • A: If you encounter any issues with the battery, please contact TezePower’s customer service at service@tezepower.com for assistance.
• Q: Can I use this battery in extreme temperatures?
  • A: It is recommended to operate the battery within the specified temperature range mentioned in the user manual to ensure optimal performance and longevity.

PRODUCT OVERVIEW

BATTERY

• Combination: 12.8V300Ah
• Dimension: L20.55W10.59H8.66inch
• Plastic Shell Color: Black

TERMINAL & POST BOLTS

• Terminal Size:
  • M8 (1.25mm Metric Thread)
• Post Bolts:
  • M8 (1.25mm Metric Thread*16mm Bolt Length)
  • (The bolts can be replaced with M8 bolts of other lengths based on actual needs.)

GENERAL INFORMATION

• Operating Voltage 12.8V
• Charging Voltage 14.4±0.2V
• Max Continuous Load Power 2560W
• Max Continuous Charge/ Discharge Current 200A

NOTICE BEFORE USING

• Step 1: CONTACT US at service@tezepower.com to activate the FIVE-YEAR WARRANTY
• Step 2: PULL OUT Insulating Plugs
• Step 3: TIGHTLY SCREW IN Post Bolts
  • Please tightly screw in the post bolts.
  • Having loose battery terminals will cause the terminals to build up heat resulting in damage to the battery.
• Step 4: PUT ON Insulating Covers
  • Please put on the insulating covers to avoid metal or conductive objects touching the positive and negative terminals of the battery at the same time, otherwise, it is likely to cause a short circuit.
• Step 5: TEST The Battery Voltage with Multimeter
  • ≥12V To Step6
  • < 12V Contact us at service@tezepower.com to help solve the problem.
• Step 6: FULLY CHARGE The Battery Separately (Refer to Page 06 for battery charging methods)
• Step 7: CONNECT To Use

BATTERY-PACK MAIN PARAMETERS

Dimension

| L20.55W10.59H8.66 inch
L522W269H220 mm
Temperature Range| Normal-Charge:0C to 50℃/32°F to 122°F
Normal-Discharge:-20℃ to 60℃/-4°F to 140°F
Self-Heating Charge: -20℃～50℃/-4℉-122℉
Self-Heating Discharge: -20℃～60℃/-4℉-140℉
Storage:-10℃ to 50℃/14F to 122°F

Optional Features

APP Type Battery Function (Optional Features)

Bluetooth Module How to download “Smart BMS” APP Android:

1. Redirect to download: https://www.dalyelec.cn/daly/SMART_BMS.apk.
2. Redirect to download: https://www.appgallery.huawei.com/#/app/C102450269.
3. Scan the QR code download below:

Apple:

1. Redirect to download: http://apps.apple.com/cn/app/smart-bms/id1519968339.
2. Search and Download the ‘Smart BMS’ APP in the Apple Store.
3. Scan the QR code download below:

Smart APP instruction

1. Once you download the “Smart BMS” APP, make sure the Bluetooth is in function.
2. Be sure the battery has been activated or follow the included product instructions to activate the battery.
3. Click the “Smart BMS” APP icon to launch.
4. You can see the related Bluetooth series number on the APP interface.
5. Click the Bluetooth series number, and direct to an interface with real-time parameters of voltage, current, capacity etc.
6. Entering the parameter interface, you will see 5 blocks, including protection, cell, acquisition, temperature and charge/discharge control.
7. To get a stable date, non-professionals are not recommended to make these settings.
8. Professionals need to use the initial password 123456 to set up.

Self-heating Module (Optional Features)

• Heating power: Use the charger/battery itself to heat. heating
• Logic: Connect the charger.
  • A. When the ambient temperature is detected to be lower than the set temperature (the customer provides the temperature value), the heating is started and the charge and discharge are disconnected
  • B. When the ambient temperature is detected higher than the set temperature (the customer provides the temperature value), the heating is disconnected and can be charged and discharged
• Heating module: Use a separate heating module. It is used separately from the protective plate, but the heating is controlled by the protective plate.

Active Equilibrium Module

pressure Minimum voltage of single unit ≥ 3.2V (factory default) and equalizing opening differential pressure: ≥50mV (factory default)
Balance closing condition| Closing voltage and differential pressure reaching the user-defined setting Minimum voltage of single unit ＜ 3.2V (factory default) and equalizing differential pressure: ＜ 50mV (factory default)
Working power consumption| <11mA
Sleep current| 300uA
working temperature| -20℃～60℃
Data Monitoring| Bluetooth APP

THINGS TO KNOW BEFORE USING

• Always put on the insulating covers on the post bolts to avoid metal or conductive objects touching the positive and negative terminals of the battery at the same time, otherwise, it is likely to cause a short circuit.
• Install the battery upright with post bolt facing up, and it could not be mounted upside down. If you need to mount the battery on its side, please contact service@tezepower.com to confirm the direction.
• Tightly screw in the post bolts. Having loose battery terminals will cause the terminals to build up heat resulting in damage to the battery.
• This battery is not intended to be used to start any devices, please DO NOT use it as a starting battery.
• Suggestions for Long-term Storage：
  • Temperature
  • The battery can be operated at a temperature of-20 ℃ to 60 ℃/-4°F to 140F, and a temperature between 10℃ to 35℃/50°F to 95°F is ideal for long-term storage. Store in a fireproof container and away from children.
  • Capacity
  • For a longer-lasting product, it is best to store your battery at a 50% charge level and recharge every three months if it is not going to be used for a long time.

CHARGING METHODS

THE VOLTAGE WHEN CHARGING & DISCHARGING

• Based on the characteristics of Lithium iron Phosphate (LiFePO4) batteries, the voltage measured by all LiFePO4 batteries during charging/discharging is not the real voltage of the battery.
• Therefore, after charging/discharging and disconnecting the battery from the power source, the voltage of the battery will gradually drop/increase to its real voltage.
• If you need to test the real voltage of the battery, please disconnect all the connections to the battery and test its voltage after putting it aside for over 30 mins.

Tips When Testing The Battery Voltage by A Multimeter

1. Put the red probe (+) tightly on the positive terminal (not the post bolts), and the black probe (-) on the negative terminal.
2. Do not touch the metal part of the probes with your hands during use.

Battery Charging Logic

• The material characteristics of the LiFePO4 battery determine that its charging curve is different from that of a lead-acid battery.
• Compared with a lead-acid battery, the LiFePO4 battery has a simpler charging process and mode. Therefore, it is recommended to select LiFePO4 for your charging mode.
• If LiFePO4 mode is not available, please refer to the recommended parameters on Page 010 for setting.

LiFePO4 Battery Charging Mode

• CC (Constant Current) Phase (T1)
  • In the beginning, a discharged battery will be charged with a constant current and voltage will be climbing steadily until reaching the constant voltage setpoint which varies for different charging methods.
• CV (Constant Voltage) Phase (T2)
  • The battery maintains a constant voltage during this phase while the current gradually decreases to 6A (0.02C) which is also known as tail current. At this point, the charging is cut off and the battery is fully charged.

SOLAR PANEL(S) & CONTROLLER

• Solar Panel
  • Recommend Power: ≥900W
  • The battery can be fully charged in one day (with effective sunshine 4.5hrs/day) by 900W solar panels.
  • It may take more than one day to fully charge the battery by 900W solar panels since the duration and intensity of light would be a great factor for their charging efficiency.

Controller

• Recommend Charging Current:****
  60A(0.2C)| The battery will be fully charged in around 5hrs to 100% capacity
  ---|---
  150A(0.5C)| The battery will be fully charged in around 2hrs to around 97% capacity
• Recommend Charging Mode： 12V (14.6V) LI (LiFePO4)

Controller Settings
Refer to the below parameters if you need to manually set up your controller. As different types of batteries have different charging modes (refer to Page 09), it is recommended to set only the following parameters for LiFePO4 batteries. The settings for other types of batteries do not apply to LiFePO4 batteries except for the following settings.

BATTERY CHARGER
Use 14.6V lithium iron phosphate (LiFePO4) battery charger to maximize the capacity.

• Recommend Charging Voltage: Between 14.2Vto 14.6V
• Recommend Charging Current:****
  60A(0.2C)| The battery will be fully charged in around 5hrs to 100% capacity
  ---|---
  150A(0.5C)| The battery will be fully charged in around 2hrs to around 97% capacity

Tips

1. Connect the charger to the battery before connecting it to the grid power in case of sparks.
2. It’s recommended to disconnect the charger from the battery after fully charging.

ALTERNATOR/GENERATOR

• TEZE battery can be charged by an alternator or generator.
• If the alternator/generator supports DC output, a DC-to-DC charger needs to be added between the battery and the generator; if the alternator/generator supports AC output, please refer to the recommendations in “Battery Charger” above to add a suitable battery charger between the battery and the generator.
• Recommend Charging Voltage: Between 14.2V to 14.6V
• Recommend Charging Current:****
  60A(0.2C)| The battery will be fully charged in around 5hrs to 100% capacity
  ---|---
  150A(0.5C)| The battery will be fully charged in around 2hrs to around 97% capacity

HOW TO ESTIMATE THE BATTERY CAPACITY

STATE OF CHARGE (SOC)

• The battery capacity could be roughly estimated by its rest voltage (not charging/discharging voltage). As there are subtle differences in the voltage of each battery, the below parameters are for reference only.
• Rest Voltage: The voltage needs to be tested at rest (with zero current) after 30 minutes of disconnecting from the charger & loads.

SERIES/PARALLEL CONNECTION

THE PREMISE OF CONNECTION
To connect in series or/and parallel, batteries should meet the below conditions;

• a. identical batteries with the same battery capacity (Ah) and BMS (A);
• b. from the same brand (as lithium batteries from different brands have their special BMS);
• c. purchased in near time (within one month).

LIMITATION FOR SERIES/PARALLEL CONNECTION

• Support connecting up to 16 identical batteries for up to
• 4 in series as 48V (51.2V) battery system/
• 4 in parallel as a 1200Ah battery system.

HOW TO CONNECT BATTERIES

Accessory Recommendation

• Battery-to-Battery Connection Cable: 2*6AWG Copper Cable
• Total Input & Output Connection: Adding two copper bars except for the cables.
  • Step 1： Refer to finish your battery-to-battery connection.
  • Step 2： Connect all the positive output cables of the batteries to one copper bar.
  • If the positive (+) of the battery is connected to the negative (-) of other batteries (i.e. in series connection), the + cannot be connected to the copper bar, otherwise the battery system will fail to connect in series.)
  • Step 3： Connect the of the load to the copper bar. The cable gauge used in this step should be able to support the total input & output current of the entire battery system.
  • Step 4： The of the battery system and load are also connected to another copper bar following the above steps.

Insulating Gloves

• Step 1 Wear Insulating Gloves
  • Wear Insulating Gloves for protection before connecting. Please pay attention to operation safety in the process of connection.
• Step 2 Voltage Balancing Before Connection
  • Below two steps below are necessary to reduce the voltage difference between batteries and let the battery system perform the best in series or/and in parallel.
  • Fully charge the batteries separately (voltage at rest: ≥13.4V)
  • Connect the batteries one by one in parallel, and leave them together for 12~24 hrs.
  • They can then be connected in series or parallel.
• Step 3 Battery-to-Battery Connection
  • Connect Batteries in Series to
  • After a series connections, the voltage of the battery system will be doubled according to the number of batteries you connect.
  • E.g. If two 12V 300Ah batteries are connected in series, the battery system will be 24V (25.6V) 300Ah.
• Connect Batteries in Parallel to to
  • Refer to Page 11 for the total input & output connection
  • After a parallel connection, the capacity of the battery system will be doubled according to the number of batteries you connect.
  • E.g. If two 12V 300Ah batteries are connected in parallel, the battery system will be 12V (12.8V) 600Ah.
  • Connect Batteries Both in Series & Parallel
  • Optimal Connection Method Recommendation
    • Connect the batteries in parallel
    • Connect the paralleled battery systems in series.
    • Connect the positive of battery①/③/⑤/⑦ to a copper bar and the of the load to the same copper bar. And then connect the negative of②/④/⑥/⑧ to another copper bar and the of the load to the same copper bar. Refer to Page16-17 for 2P2S, 2P4S battery system wiring diagram
    • As of①/③/⑤/⑦ is connected in series with of ②/④/⑥/⑧, please do not connect of①/③/⑤/⑦ with of load or of ②/④/⑥/⑧ with of load, otherwise, the battery system will fail to connect in series.
• Step 4 Rebalancing Every 6 Months
  • It is recommended to rebalance the battery voltage every six months following Step 2 on Page 13 if you’re connecting multiple batteries as a battery system, as there might be voltage differences after six months of the battery system running.

Wiring Diagrams

INVERTER SETTINGS

• METHOD ONE (RECOMMEND)
  • Select “12V (14.6V) LI (LiFePQ4) Mode”
• METHOD TWO
  • If method one is not available, select “User Mode” to enter values according to below parameters.

The above setting parameters apply to common inverters on the market (such as Victron, Renogy, Growatt, Xantrex, Go Power, Lux Power, etc.). Different brands have slightly different descriptions or naming methods for each parameter. Please directly set the parameters with the same meaning. If the inverter parameters to be set are special or cannot correspond to one of the above items, please contact service@tezepower.com for confirmation.

WHAT TO DO WHEN THE BATTERY STOPS WORKING?

GENERAL STEPS
If the BMS has cut off the battery for protection, follow the below steps to activate it.

• Step 1： Cut off all the connections from the battery
• Step 2： Leave the battery aside for 30mins
  • Then the battery will automatically recover itself to normal voltage (>10V) and can be used after fully charged.
  • If the battery is unable to recover itself after the above steps, please try activating by ONE OF BELOW TWO METHODS.
  • After activated (voltage>10V) and fully charged by the normal charging method, it can be used normally.
  • Method ①
  • Use a charger with an OV charging function ① to fully charge the battery
  • Method ②
  • Connect an 18V~36V solar panel to charge the battery for 3~10s in sunny daytime.

ATTENTION

• Caution: Risk of Fire, Explosion or Burns
• DO NOT Short-circuit
• DO NOT Reverse connections from the charger to the battery
• DO NOT Disassemble
• DO NOT Throw into fire or incinerate
• DO NOT Heat above 70 ℃/158°F
• WARNING

BATTERY DISPOSAL

• The electrodes of the waste battery should be wrapped with insulating paper to prevent fire and explosion.

PROHIBITION OF DISASSEMBLY

• Never disassemble the cells.
• The disassembling may generate an internal short circuit in the cell, which may cause gassing, firing, explosion, or other problems.
• The electrolyte is harmful.
• Li-Fe battery should not have liquid from electrolyte flowing, but in case the electrolyte comes into contact with the skin, or eyes, physicians shall slush the electrolyte immediately with fresh water and medical advice is to be sought.

PROHIBITION OF DUMPING OF CELLS INTO WATER

• Do not soak the battery in the liquid, like water, seawater non-alcoholic drinks, fruit juice, coffee or other drinks.

PROHIBITION OF DISASSEMBLY

• If any abnormal features of the cells are found such as damage in a plastic envelope of the cell, deformation of the cell package, smelling of an electrolyte, an electrolyte leakage and others, the cells shall never be used anymore.
• The cells with a smell of the electrolyte or a leakage shall be placed away from the fire to avoid firing or explosion.

PROHIBITION OF USING IN BELOW PLACES

• Do not use the battery in a place with strong static electricity and a strong magnetic field, otherwise, it is easy to damage the battery safety protection device and bring hidden danger.

Originate from TezePower

• https://tezepower.com/.
• service@tezepower.com
• Shenzhen Teze Power Co., Ltd.
• 12V300AH

References

• TezePower - Best LiFePO4 Lithium Battery Manufacturer
• TezePower - Best LiFePO4 Lithium Battery Manufacturer
• dalyelec.cn/daly/SMART_BMS.apk

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