Introduction
The Wattcycle 12V 100Ah LiFePO4 Lithium Battery is a compact and portable energy storage solution designed for various applications including RVs, marine use, and off-grid solar systems. Featuring Bluetooth connectivity and a Smart Battery Management System (BMS), this battery offers reliable performance and enhanced safety.
This mini 12V 100Ah LiFePO4 battery boasts an 11% weight reduction and 39% volume reduction compared to previous generations, with an energy density of 63Wh/lbs. It is lightweight enough for single-person transport, making it ideal for outdoor setups.

Image: Wattcycle 12V 100Ah LiFePO4 Lithium Battery with a smartphone displaying the Bluetooth app interface, showing real-time battery data.
What's in the Box
- 1 x 12V 100Ah Mini Bluetooth LiFePO4 Battery (10.2*6.6*8.2 inches)
- 4 x M8 Screws
- 2 x Insulated Cap
- Instruction Manual

Image: A visual representation of the items included in the product package, showing the battery, screws, caps, and manual.
Video: An unboxing video demonstrating the contents of the Wattcycle 100Ah LiFePO4 battery package, showing each item as it is removed from the box.
Specifications
| Specification | Value |
|---|---|
| Brand | Wattcycle |
| Model | WT12V100AH100MINIBT |
| Rated Capacity | 100Ah |
| Nominal Voltage | 12.8 Volts |
| Nominal Energy | 1280Wh |
| Cycle Life | Up to 15,000 deep cycles (at 60% DOD) |
| Max Continuous Discharge Current | 100A |
| Peak Discharge Current | 300A (different parallel quantities) |
| Charge Voltage | 14.4V ±0.2V |
| Terminal Type | M8 |
| Product Dimensions | 5.4"D x 9"W x 8.2"H |
| Item Weight | 20.9 pounds |
| IP Degree | IP65 |
| Housing Material | ABS |
| Operating Temperature | -4°F to 158°F (-20°C to 70°C) |

Image: A visual comparison highlighting the compact size and lighter weight of the Wattcycle Mini LiFePO4 battery compared to a traditional lead-acid battery.
Setup
Connecting Terminals
The battery comes with M8 screws for terminal connections. Ensure secure connections for optimal performance. Always use appropriate tools and safety precautions when handling battery terminals.
Initial Voltage Check
Before initial use, it is recommended to check the battery's voltage. The Wattcycle app can provide real-time voltage readings. For optimal performance, ensure the battery is adequately charged before heavy use.
Bluetooth App Connection
Download the Wattcycle App from your smartphone's app store. You can customize the Bluetooth name for easy identification. Once connected, the app allows you to monitor real-time battery data such as voltage, charging/discharging current, temperature, and alarm alerts.

Image: A step-by-step guide illustrating how to download the Wattcycle app, connect to the battery via Bluetooth, and monitor its status.
Operating
Charging Methods
The Wattcycle LiFePO4 battery can be charged using various methods:
- LiFePO4 Charger: Approximately 5 hours with a 14.6V 20A (0.2C) charger.
- Solar Panel: Can be charged in about 1 sunny day with a ≥400W solar panel.
- Alternator/Generator: Approximately 5 hours with a 20A DC-DC charger.

Image: A visual guide showing the three primary methods for charging the battery: using a LiFePO4 charger, solar panels, or an alternator/generator.
Series and Parallel Connection
The battery supports up to a 4S4P configuration, allowing expansion of total capacity up to 20.48kWh. This is ideal for powering large systems like marine trolling motors or whole-RV setups.

Image: A diagram illustrating how multiple Wattcycle batteries can be connected in series and parallel to achieve higher voltage or capacity, showing configurations from 1P to 4S4P.
Video: A detailed guide on how to properly charge, and connect multiple batteries in series and parallel configurations for the Wattcycle LiFePO4 battery system.
Maintenance
Low-Temperature Protection
This battery operates in a wide temperature range (-4°F to 158°F / -20°C to 70°C). It automatically cuts off charging below 32°F (0°C) to protect cells and resumes charging once temperatures rise above 41°F (5°C). This ensures consistent performance in cold environments.

Image: The Wattcycle battery is shown in a snowy environment, illustrating its low-temperature cut-off protection features.
Smart BMS Protection
The built-in 100A Battery Management System (BMS) safeguards against overcharge, deep discharge, overload, overheating, low temperatures, and short circuits. It also balances individual cells to maintain efficiency, preventing uneven wear that shortens battery life.

Image: An exploded view of the battery highlighting the 100A BMS and its various protection mechanisms.
Troubleshooting
BMS Shutdown
If the battery experiences an over-current event, the BMS may shut down to protect the cells. The app will display a 'DSG OC Alarm(A)' warning message. To reactivate, you may need to disconnect the load and reconnect, or use the app to re-enable the discharge switch.
App Connectivity Issues
Ensure your device's location services are enabled for the app to recognize the battery. If the app prompts to download a different application (e.g., 'Frontdoor'), scroll down to find and install the correct 'BMS Meta' application. Be aware that downloading apps outside of official app stores may present security warnings.
Warranty & Support
Wattcycle LiFePO4 batteries come with a 5-year warranty. For product concerns, reach our team via the Amazon page (we respond within 24 hours) or our official email. Our dedicated technical support helps with setup, troubleshooting, and connectivity.







