9 Best Pellet Stove Battery Backups 2025 in the United States

The Freedom Stoves Independence PS21 Pellet Stove with Battery Backup brings a lot of impressive features to the table, particularly for those looking for reliable heating during power outages. With a heating capacity of up to 34,700 BTUs, it effectively warms spaces between 800 to 1800 square feet, making it suitable for both single rooms and larger areas. One of its standout features is the robust battery backup option, which allows for over 40 hours of runtime with the right batteries. This is a significant advantage during storms or outages, providing peace of mind when you need it most.

On the usability front, the stove’s touchscreen interface, Wi-Fi capability, and remote control offer modern convenience, allowing users to adjust settings from anywhere in the home easily. The customizable appearance with interchangeable panels adds a nice touch for those who want a stove that fits their decor.

There are a few considerations to keep in mind. The need for two 12-volt batteries, which are sold separately, may be an additional expense and requirement for users. While the stove is powerful, its weight and assembly requirement could pose challenges for some, particularly those looking for a straightforward installation. The 5-year limited warranty is a plus, but it's essential to verify the warranty specifics regarding coverage and claims.

The 933 Battery Backup System by SEC America is designed for sump pumps and alternative heating appliances like pellet stoves. It features a 1200 Watt Pure Sine Wave Inverter, which ensures smooth and efficient operation. The compact and durable aluminum design makes it easy to install and maintain, and it operates quietly without emitting any pollutants.

The system includes indicators to display power output, battery charge, and battery replacement needs, which can be very helpful in monitoring its status. However, it requires a separate purchase of a 12Volt deep cycle marine battery with a capacity of 90 to 200 ampere hours for functionality, which might be an additional cost to consider. Weighing 18 pounds, it is relatively portable compared to some other options.

Additionally, the 2-year factory warranty provides extra peace of mind regarding its durability and serviceability. This product would be ideal for users needing reliable backup power for their heating appliances during outages, but the necessity of buying a separate battery could be a drawback.

The Freedom Independence PS21 Battery Set with Cables is designed specifically for the Independence PS21 Pellet Stove Model. It includes two 12V sealed lead batteries that are rechargeable, ensuring continuous power supply during outages.

The set comes with a 20-foot DC battery backup cable and a 12-inch battery-to-battery cable, facilitating easy installation with quick disconnect features and the correct eyelets for the setup. This product is highly compatible with the intended stove model, making it a reliable choice for users of the Independence PS21 Pellet Stove.

Portability might be a challenge given the presence of two sealed lead batteries, which can be heavy. As a niche product ranked in the lower tier of household items, it meets the essential needs for a specific user group – those who own the Independence PS21 Pellet Stove and are looking for a direct and compatible battery backup solution.