Introduction
This manual provides essential information for the safe and efficient use of your WEIZE 12V 100Ah LiFePO4 Deep Cycle Lithium Battery. This battery is designed for energy storage applications, offering high performance and a long cycle life. It features a compact, lightweight design and includes a smart Battery Management System (BMS) for enhanced protection.
Please read this manual thoroughly before installation and operation to ensure proper usage and to maximize the lifespan of your battery.
Safety Information
WARNING: Failure to follow these safety instructions may result in fire, electric shock, injury, or damage to the battery and other property.
- Do not short circuit the battery terminals.
- Do not heat or incinerate the battery.
- Do not immerse the battery in any liquid.
- Do not disassemble the battery.
- Use only a dedicated LiFePO4 battery charger.
- Do not connect more than two batteries in series.
- This battery is intended for energy storage purposes only. Do not use this battery as a car starting battery or a golf cart battery.
- Ensure proper ventilation during charging and operation.
- Keep out of reach of children.
Product Overview
The WEIZE 12V 100Ah LiFePO4 battery is engineered for superior performance and durability. Key features include:
- Excellent Performance: Provides 1.28kWh of energy, supporting a maximum load of 1536W with a continuous discharge current of up to 100A (peak 500A for 3 seconds).
- Long Lifespan: Offers over 2000 cycles at 100% depth of discharge, or 8000 cycles at 50% depth of discharge.
- Built-In 100A BMS: Protects against overcharge, over-discharge, overcurrent, short-circuiting, and extreme temperatures (both low and high).
- Lightweight and Compact: Significantly lighter than lead-acid batteries, making it ideal for various applications.
- Low Temperature Protection: The BMS automatically cuts off charging when temperatures are below freezing (0°C / 32°F) to prevent damage.
Image: The WEIZE 12V 100Ah LiFePO4 battery, highlighting its compact dimensions (10.24"W x 6.6"D x 8.27"H) and lightweight design (21.8 lbs). It is 25% smaller and 75% lighter than a comparable 100Ah SLA battery.
Image: The WEIZE 12V 100Ah LiFePO4 battery, illustrating its 1280Wh energy capacity and power delivery for various appliances, such as 10W for 12.8 hours, 100W for 12.8 hours, 600W for 2.1 hours, and 1200W for 1 hour.
Image: Diagram showing the internal structure of the WEIZE LiFePO4 battery with Grade A cells and Smart BMS protection. The BMS provides protection against overcharge, over-discharge, overcurrent, short circuit, high temperature cut-off, and low temperature cut-off.
Setup
Initial Charging
Before first use, it is recommended to fully charge your WEIZE LiFePO4 battery. Use a dedicated LiFePO4 compatible charger. Ensure the charger settings are appropriate for lithium iron phosphate batteries (typically 14.4V to 14.6V). Avoid chargers with "equalizing" or "desulfation" modes, as these are for lead-acid batteries and can damage your LiFePO4 battery.
Connecting Batteries
For parallel connections, ensure all batteries are at a similar state of charge before connecting. Do not connect more than two batteries in series. Always use appropriate gauge wiring and secure connections to prevent arcing or overheating.
The battery is equipped with Marine Terminals for secure connections.
Operating Guidelines
The WEIZE 12V 100Ah LiFePO4 battery is versatile and suitable for various deep cycle applications:
- RV and Camping: Powering appliances, lights, and electronics in recreational vehicles and during camping trips.
- Solar Systems: Storing energy generated by solar panels for off-grid or backup power.
- Marine Applications: Ideal for fish finders, ice fishing, and boating electronics.
- Trolling Motors: Provides reliable and long-lasting power for electric trolling motors.
Always ensure your application's power requirements do not exceed the battery's maximum continuous discharge current of 100A or peak discharge current of 500A (for 3 seconds).
Image: Collage showing common applications for the WEIZE LiFePO4 battery, including powering an RV, a house with solar panels, a boat, and providing energy for camping.
Video: An official video from WEIZE showcasing the versatility and applications of their Deep Cycle Lithium Batteries, including use in RVs, solar systems, and for various power needs.
Maintenance
Charging
Always use a LiFePO4 compatible charger. The recommended charging voltage is between 14.4V and 14.6V. Avoid charging the battery when its internal temperature is below 0°C (32°F). The built-in BMS will automatically prevent charging in freezing conditions to protect the battery.
Storage
For long-term storage, discharge the battery to approximately 50% of its capacity. Store the battery in a cool, dry place, away from direct sunlight and extreme temperatures. It is recommended to check and charge the battery every 3 months during storage to maintain its health.
Troubleshooting
Battery Appears Dead (BMS Cutoff)
If the battery appears completely dead, it is likely that the built-in Battery Management System (BMS) has triggered a protective shutdown due to conditions such as over-discharge, overcurrent, or short-circuiting. The BMS will automatically cut off the battery, and the voltage may drop below 1V.
To reactivate the battery:
- Disconnect the battery from any load.
- Connect a LiFePO4-compatible charger to the battery. The BMS will automatically reactivate after approximately 1 second once the circuit is cut off and a charging voltage is applied.
- If the battery does not reactivate immediately, try connecting one charger cable to its respective terminal and gently tapping the other charger cable to its terminal several times. This can sometimes help "wake up" the BMS.
Ensure that the cause of the BMS shutdown (e.g., short circuit, excessive load) is resolved before attempting to reactivate and use the battery.
Specifications
Image: A detailed parameter table for various WEIZE LiFePO4 battery models, including nominal voltage, nominal capacity, energy, standard charge voltage, discharge cut-off voltage, standard charge current, allowed max charge current, allowed max discharge current, peak discharge current, terminal type, temperature ranges, and cycle life.
| Feature | Value |
|---|---|
| Brand | WEIZE |
| Model Number | BAC-0110 |
| Voltage | 12.8 Volts |
| Nominal Capacity | 100Ah |
| Energy | 1.28 kWh (1280 Wh) |
| Continuous Discharge Current | Up to 100A |
| Peak Discharge Current | 500A (for 3 seconds) |
| Item Weight | 23.5 Pounds |
| Product Dimensions (D x W x H) | 6.6"D x 10.24"W x 8.27"H |
| Terminal Type | Marine Terminal |
| Cycle Life | >2000 cycles @100% DOD / >8000 cycles @50% DOD |
| Charge Temperature | 0°C ~ 45°C (32°F ~ 113°F) |
| Discharge Temperature | -20°C ~ 60°C (-4°F ~ 140°F) |
| Included Components | Battery Only |
Warranty
The WEIZE 12V 100Ah LiFePO4 Battery (Model BAC-0110) comes with a 10-year warranty. This warranty covers defects in materials and workmanship under normal use and service. Please retain your proof of purchase for warranty claims.
For detailed warranty terms and conditions, please refer to the official WEIZE website or contact customer support.
Support
For technical assistance, troubleshooting, or warranty inquiries, please contact WEIZE customer support through the following channels:
- Website: Visit the official WEIZE website for FAQs and support resources.
- Email: Refer to your product packaging or the WEIZE website for customer service email addresses.
- Phone: Contact numbers may be available on the WEIZE website for direct support.
When contacting support, please have your battery model number (BAC-0110) and proof of purchase readily available.