Introduction
The WindyNation BattaMax Series 100 amp-hour, 12 Volt heavy-duty deep cycle AGM sealed lead acid battery is engineered for applications requiring deep, repetitive discharges. Its sealed and maintenance-free design makes it suitable for various off-grid power needs.
Key features include:
- Heavy-Duty Plates: Designed for deep, repetitive discharges.
- Versatile Applications: Ideal for solar systems, RVs, UPS, offshore marine power, telecommunications, and portable tools.
- High Purity Lead: Constructed with 99.995% pure virgin lead for extremely low discharge rates and maximum power storage.
- Long Float Life: Expected float life of 10 to 12 years at 25 degrees Celsius.
- Capacity: 100 Amp-Hour capacity at 10 hours (10 Amp power draw for 10 hours) and 110 Amp-Hour capacity at 20 hours (5.5 Amp power draw for 20 hours).
Specifications
Detailed technical and physical specifications for the WindyNation 100AH 12V AGM Deep Cycle Battery are provided below:
| Parameter | Value |
|---|---|
| Product Dimensions | 13 x 6.8 x 8.7 inches |
| Item Weight | 66 pounds |
| Brand | WindyNation |
| Battery Cell Composition | Sealed Lead Acid |
| Battery Capacity | 100 Amp Hours |
| Recommended Uses | UPS, Solar Systems, RVs, Offshore Marine, Telecommunications, Portable Tools |
| Unit Count | 1 Count |
| Date First Available | March 28, 2018 |


Setup
Before initial use, ensure the battery is fully charged. The battery comes with threaded terminals for secure connections.
- Unpacking: Carefully remove the battery from its packaging. Inspect for any signs of damage.
- Initial Charge: Although batteries may arrive partially charged, it is recommended to fully charge the battery before its first use to optimize performance and lifespan. Use a compatible 12V battery charger designed for AGM batteries.
- Terminal Connections:
- Identify the positive (+) and negative (-) terminals.
- Connect the positive cable (typically red) to the positive terminal and the negative cable (typically black) to the negative terminal.
- Ensure all connections are tight and secure to prevent arcing and ensure efficient power transfer.
- Mounting: The sealed, non-spillable design allows the battery to be used in various orientations. Secure the battery in a well-ventilated area, away from direct heat sources.

Operating Instructions
The WindyNation AGM Deep Cycle Battery is designed for consistent, long-term power delivery in various applications.
- Deep Cycle Use: This battery is specifically designed for deep-cycle performance, meaning it can be discharged and recharged many times without significant loss of capacity. It is ideal for applications where the battery is the primary power source.
- Recommended Applications:
- Solar Systems: Store energy generated by solar panels for continuous power supply.
- RVs & Marine: Provide reliable power for onboard appliances and electronics.
- UPS (Uninterruptible Power Supply): Offer backup power during outages.
- Telecommunications: Ensure consistent power for communication equipment.
- Portable Tools: Power heavy-duty portable equipment.
- Temperature Considerations: The battery performs well across a wide temperature range. However, extreme cold can slightly reduce capacity, and extreme heat can shorten lifespan. Refer to the specifications for optimal operating temperatures.

Video: This video showcases a real customer testing the WindyNation 100AH battery in an off-grid setup, demonstrating its capability to power various devices. It provides a practical example of the battery's performance in a real-world application.
Maintenance
The WindyNation AGM Deep Cycle Battery is designed to be maintenance-free, eliminating the need for electrolyte checks or water additions. However, proper care ensures maximum lifespan and performance.
- Regular Charging: Avoid prolonged periods of deep discharge. Recharge the battery promptly after use, especially after significant discharge.
- Trickle Charging (for long-term storage): If the battery will be unused for extended periods (e.g., during winter storage), connect it to a compatible trickle charger or smart charger to maintain optimal charge levels. This prevents self-discharge from reducing battery life.
- Terminal Inspection: Periodically check battery terminals for corrosion or loose connections. Clean terminals with a wire brush and baking soda solution if corrosion is present, then rinse with water and dry thoroughly. Ensure connections are tight.
- Storage: Store the battery in a cool, dry, and well-ventilated area. Avoid storing in direct sunlight or extreme temperatures. Ensure the battery is fully charged before storage.

Important Note on Charging:
While the battery is maintenance-free, using an appropriate charger is crucial. For long-term storage or infrequent use, a trickle charger helps maintain battery health by preventing excessive self-discharge. This ensures the battery is ready for use when needed without significant capacity loss.
Video: This video demonstrates the charging process of a 12V 100AH battery using a smart battery charger. It highlights the importance of using a compatible charger and shows the battery's state of charge during the process. The video also mentions that initial charging typically takes about two hours to reach 100%.
Troubleshooting
If you encounter issues with your WindyNation AGM Deep Cycle Battery, consider the following common troubleshooting steps:
- Battery Not Holding Charge:
- Ensure the charger is compatible with AGM batteries and is functioning correctly.
- Check for parasitic drains on your system that might be discharging the battery when not in use.
- Verify that the battery has been fully charged before use.
- Low Power Output:
- Inspect all cable connections for tightness and corrosion. Loose or corroded connections can impede power flow.
- Confirm the battery's state of charge. A low charge will result in reduced power output.
- Ensure the load is within the battery's maximum discharge current limits.
- Battery Overheating:
- Ensure the battery is in a well-ventilated area and not exposed to direct sunlight or excessive ambient heat.
- Verify that the charging current is not exceeding the maximum recommended charge current.
- Physical Damage: If the battery casing is cracked, swollen, or shows signs of leakage, discontinue use immediately and replace the battery.
For persistent issues or concerns, contact WindyNation customer support.
Warranty
WindyNation products typically come with a manufacturer's warranty covering defects in materials and workmanship. For specific warranty terms, duration, and claim procedures, please refer to the warranty information included with your product packaging or visit the official WindyNation website.
It is recommended to retain your proof of purchase for warranty claims.
Support
For further assistance, technical support, or inquiries regarding your WindyNation 100AH 12V AGM Deep Cycle Battery, please contact WindyNation customer service.
- Visit the official WindyNation Store on Amazon for product information and contact options.
- Refer to the contact details provided in your product's user manual.
Safety Warnings
PROPOSITION 65 WARNING: Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and reproductive harm. Batteries also contain other chemicals known to the State of California to cause cancer. Wash hands after handling.
WARNING: Risk of fire, explosion or burns. Do not disassemble, heat above 60°C or incinerate. Not recommended for inverted use. Follow product charging instructions.
- Do not short circuit the battery.
- Do not charge in a gas-tight container.
- Recharge after use.






