ECOX 12100 SE Lithium Iron Phosphate Battery User Manual

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Disclaimer

The Manual contains instructions for the use of the product. All the pictures and charts in this manual are for description and explanation only. Information in the manual may change without further notice. Please read this manual carefully before using the product and keep this manual for further reference. Failure to use the product in accordance with the manual may result in serious injuries, property damages and may void the warranty, with which the user acknowledges and accepts full responsibility for any risks associated. No representations or warranties, either express or implied, are made with respect to the information contained in this manual. In the event of any conflicts between this manual and the applicable law, the latter prevails. The final interpretation of this manual rests with the issuing party.

Safety Instructions

Warning

• The device should be used in strict compliance with local laws, electrical safety regulations, and fire prevention regulations of the nation or the region.
• Do not place the device near open fire, heat sources and flammable materials.
• Do not leave the device in an extremely hot environment.
• Do not place the device in damp locations.
• Do not expose the device to high electromagnetic radiation.
• Do not strike, mechanically crush or cut the device.
• Do not puncture the device with sharp objects.
• Do not stack heavy objects on the device.
• Do not place metal objects or wires on the device.

Caution

General

• For safety purposes, please use only the accessory (cable, charger, etc.) supplied or recommended. Damage to the product caused by using third-party accessories is not covered by warranty.
• Before first use, please check if the device is in good condition. If the device is deformed or has an odor, do not use the device and return it to the distributor.
• Keep the device out of reach of children and pets.
• If the device falls into water during use, please take it out immediately.
• If the battery leaks, avoid contact with the leaking liquid or gas. In case of contact with skin or eyes, flush immediately with plenty of clean water and seek medical advice.

Installation

• Do not install the device in an unstable place. Personal injury or property damage may be caused if the device falls.
• Do not place the device in dusty locations.

Operation

• Please ensure good ventilation while the device is in use.
• If the device has been stored for more than one year, please check it carefully to make sure there is no problem before using it.

Transportation

• Keep the device upright when moving it.
• Handle the device gently.

Maintenance

• Charge the device regularly. If you need to store the device for a long time, please charge it to 40% ~ 70% every time before storing it.
• Recharge the device in time after it has been fully discharged.
• If the device does not work properly, please contact your distributor. DO NOT disassemble the device for repair or maintenance by yourself. The user acknowledges and accepts full responsibility for any risks associated.
• Do not charge the device which is hot, deformed, or leaking.
• It is recommended to check the connection between power cords and screws regularly to ensure that there is no loosening, breakage or corrosion at the connection points.
• It is recommended to regularly check if the device storage environment is normal.

Cleaning

• Please use a soft and dry cloth to clean the exterior surfaces.

Disposal

• Dispose of used batteries according to the laws or the regulations of the nation or the region.

1 Introduction

Ecox 12100 SE is a lithium iron phosphate battery module. It is designed to replace deep-cycle lead-acid batteries. The battery is perfect for recreational vehicles (RV), caravans, marine (boats), trucks, cabins, and other off-grid deep-cycle applications.

The product has the following advantages:

• High Reliability: The built-in advanced BMS manages charging and discharging status, helps in balancing the individual cells, and ensures intelligent automatic protection against over-voltage, under-voltage, over-current, over-temperature, under-temperature and short circuit.
• Low Self-discharge Loss: The battery can be stored for more than 12 months if it has been disconnected from other devices.
• Energy Expansion: The battery supports up to 1 in series and 8 in parallel (Max. 1S8P) to build a 12 V 800 Ah battery system.
• Heating Film: With the heating film, the battery can work in an extremely-cold environment.

2 Packing List

The package includes:

• Battery
• Insulating Cap × 2
• Terminal Bolt × 2 (M8 × 1.25 × 14 mm)
• User Manual

3 Optional Accessory

Battery Adapter Cables

4 Interface & Indicator

The battery features the following interface elements:

• Positive Pole
• Power Button
• Negative Pole

Indicators:

Running Indicator

• Solid blue: Charging mode / Idle mode.
• Quick flashing blue: Discharging mode.
• Slow flashing blue: Power-saving mode.
• Quick flashing: Light up every 2 seconds.
• Slow flashing: Light up every 4 seconds.

Alarm Indicator

• Flashing red: Protected mode.
• Solid red: System error. (Refer to Troubleshooting section for details)

SoC Indicators

• Each indicator represents 25% State of Charge (SoC).
• When the device is being charged, one of the indicators will flash to show the state.
• When SoC is less than 5% and the device is not being charged, all power indicators will remain off to save power.
• When an exception occurs, all power indicators will remain off.

5 Battery Installation

5.1 Tools Preparation

Required tools: Voltmeter, Safety Goggles, Insulating Gloves, Torque Wrench, Screwdriver, Wire Cutter.

5.2 Pre-installation Check

• Ensure the battery is away from open flames, heat sources, and flammable materials.
• Cut off the power before wiring, installing, or removing the battery.
• To prevent electric shock, remove watches, bracelets, rings, and other conductive items. Wear insulating gloves and safety goggles before installation.

5.3 Battery Connection

Single Battery

Connect the terminals securely. Recommended torque for terminal bolts is 8 ± 1 N·m.

Multiple Batteries

Caution: Do not mix batteries of different brands, types, models, or life spans. To prolong battery life, ensure power cables have the same length, diameter, and internal resistance when using multiple batteries.

Connecting the Batteries in Parallel

Steps:

1. Connect the Positive Terminals of the batteries in sequence.
2. Connect the Negative Terminals of the batteries in sequence.
3. Connect the Positive Terminal of the first battery and the Negative Terminal of the last battery to the corresponding terminals of external devices.

Note: Up to 8 batteries can be connected in one system.

5.4 Post-installation Check

Please check if the positive and negative connections are correct.

6 Battery Use

• Turn on the battery: Short press the button for about 1 second.
• Note: Upon first use, the battery performs a power-up self-test. The device enters idle mode after 30 seconds of inactivity and power-saving mode automatically if no operation is performed. You can turn on all batteries in a system by turning on any single battery.
• Turn off the battery: Long press the button for about 3 seconds.
• Note: If turning off batteries in a system, turn off all batteries within 1 minute.
• Enable Power-saving Mode: Short press the button to enable/disable power-saving mode when the battery is turned on.

7 Battery Storage

Follow these steps for battery storage:

1. Ensure the battery level is between 40% and 70%.
2. Disconnect the battery from all loads and the charging device.
3. Turn off the battery.
4. Store the battery in a well-ventilated, clean, dry area with temperatures between 50 °F (10 °C) and 104 °F (40 °C).

Note: Charge the battery at least once every 6 months to prevent over-discharge. In extreme conditions, the battery can be stored for up to 1 month at temperatures as low as -4 °F (-20 °C) or as high as 140 °F (60 °C).

8 Battery Management System

Protection and Warnings

• Under-voltage
• Over-voltage
• Over-current
• Over-temperature/Under-temperature
• Short Circuit
• System Error

Management and Monitoring

• Cell Balancing
• Smart Charging Mode
• Heater Control
• SoC Calculation
• SoC Display
• Operation Log

9 Specifications

Electrical Specification

Discharge Specification

Charge Specification

Environment Specification

*If charging is required when the temperature is below 32 °F (0 °C), please connect the charger to enable the heating film. The battery starts charging when the cell temperature is heated to above 32 °F (0 °C).

Mechanical Specification

Other

*Product performance is based on testing in a controlled environment. Your results may vary due to several external and environmental factors.

Dimension Diagram Description

The battery has dimensions of approximately 11.81 inches (300 mm) in length, 6.3 inches (160 mm) in width, and 8.27 inches (210 mm) in height. Terminal posts are located on the top.

10 Troubleshooting

My battery won't turn on?

If the battery does not turn on, charge it to see if it can be activated. If it restores, contact your distributor. If it does not restore, contact your distributor.

My battery won't turn off?

Disconnect all external devices and long press the power button. If it turns off, it is normal. If it does not turn off, contact your distributor.

My battery won't charge?

Check the status of the running indicator:

• Solid/Flash Blue: Check if the charger is working properly. If the environment temperature is lower than 32 °F (0 °C), consider changing the charger. If the battery cell temperature is below 32 °F (0 °C), it will start charging once the temperature rises above this threshold. Do not disconnect the charger.
• Light Off: Check the status of the alarm indicator. If the alarm indicator is solid red (System Error), contact your distributor. If the alarm indicator is flashing red (Protected Mode), check if the charger current is in the rated range; if not, change the charger. If the battery is fully charged (all SoC indicators are solid blue), disconnect the charging device.

Multiple batteries connected in parallel (Charging)

Ensure that the wires connecting the battery to the bus bar are of equal length. Make sure the voltage difference between batteries is less than 0.05 VDC. Wait for the battery temperature to return to the charging temperature range.

My battery won't discharge?

Check the status of the running indicator:

• Solid/Flash Blue: Check if the external device is working properly. If it is, contact your distributor. If not, remove the external device.
• Light Off: Check if all SoC indicators are off. If yes, charge the battery. If the battery is fully discharged, check the current of the external device; if it's out of the rated range, remove the external device.

Flashing Red: Protected mode

This could be due to Discharging Over-current or Over-temperature/Under-temperature. For over-current, check the external device's current rating and disconnect some devices if necessary. For over-temperature, wait for the battery temperature to return to the discharging temperature range. Current derating is recommended.

Multiple batteries connected in parallel (Discharging)

Ensure that the wires connecting the battery to the bus bar are of equal length. Disconnect some external devices if over-current protection is triggered.

Solid Red: System error

Restart the battery and check the status of the alarm indicator. If it persists, contact your distributor.

Light Off (after error)

The battery is restored. Recharge the battery to see if it can be charged.

11 FAQ

1. Why won't my battery turn on sometimes when it is just turned off?

Please wait at least 3 seconds if you need to turn on a battery after it has just been turned off.

2. Why won't my batteries turn off when they are connected in parallel?

Please turn off all the batteries within 1 minute. Ensure there is no power supply on the power bus and no energy storage devices like large capacitors connected to the bus bar.

3. Why won't my battery system in parallel connection turn on with one-click?

If the voltage of some batteries is low, turning on the whole system by activating one battery may fail. In this case, please turn on all the batteries manually one by one.

4. Why is derating recommended when multiple batteries are used in parallel?

When multiple batteries are connected in parallel, the internal resistance from the bus bar to each battery may differ, leading to voltage differences. This can cause uneven current distribution. Derating is recommended to avoid triggering battery protection.

5. Why do some batteries charge at low temperatures and others don't?

Batteries can be charged within their charging temperature range, but the cell temperature of different batteries may vary even at the same ambient temperature.

6. Does the heating film automatically heat the battery at low temperatures?

The battery's heating film can only be activated if external electricity is detected.

7. Why can a voltage be measured by a multimeter at the power terminals of a battery when it is turned off?

This is a normal phenomenon. After the battery is turned off or enters sleep mode, there is a floating voltage (2 V~7 V) on both terminals, which is not sufficient for device operation.

8. Why does my battery sometimes over-discharge?

When the battery is discharged, disconnect the load and charge it promptly. If the bus bar is connected, the battery may be repeatedly activated by float currents or external devices, potentially leading to over-discharge.

9. With multiple batteries connected in parallel, why do some of them enter protected mode due to over-current at the moment of turning on?

If the voltage difference between batteries is too large, the battery with higher voltage will charge the one with lower voltage, which can result in charging/discharging over-current.

For support, contact: ess_support@pytesgroup.com