443PS Sump Pump Battery Backup

In 2024, U.S. utility customers experienced an average of 11 hours without electricity, double the annual average from the previous decade. Storms like Hurricanes Beryl, Helene, and Milton left millions in the dark for hours (even days), with places like South Carolina facing 53 hours of outages in a single year. When the grid fails, your sump pump fails as well, which can lead to flooding, water damage, and costly repairs.

At Alternative Heating & Supply, we believe preparation beats panic. That’s why we carry the 443PS Pump Sentry, a rugged, 600-watt sump pump battery backup system designed to keep your pump running during power outages. It installs in minutes, works silently, and keeps your basement dry when it matters most.

Why Homeowners Need a Sump Pump Battery Backup System

It’s all about protecting your home investment.

• Power outages often hit during heavy storms, which is exactly when you need your sump pump the most.
• Without power, your pump won’t remove water, putting your basement, crawl space, or mechanical systems at risk.
• With climate shifts and more frequent extreme weather, grid reliability is no longer a guarantee.
• A battery backup system like the 443PS automatically kicks in when the power goes out.

Having this protection means no middle-of-the-night panic when the lights go out and the rain keeps falling.

Meet the 443PS 600-Watt Battery Backup System

Designed for High-Efficiency

The 443PS is built to support energy-efficient AC sump pumps with a steady-state draw of 5 amps or less. This makes it compatible with most modern systems, but always check your pump’s specs before installing.

Using this backup unit helps extend the lifespan of your pump and battery by preventing overloads or underpowered operation.

Features and Technical Benefits

• 600-Watt Output Capacity – Sufficient for most standard sump pumps, utility pumps, and water removal systems.
• Automatic Switchover – Detects when utility power is lost and seamlessly transitions to battery power—no manual steps required.
• Continuous Operation – Keeps your sump pump working during outages, then automatically recharges once power is restored.
• Built-In Safety Protections – Includes overload protection, short circuit shutoff, battery charge indicators, and alarms.
• Compact & Mountable – Wall or surface-mount design saves space and stays out of your sump pit.

Use only a deep cycle battery (not a car battery). Automotive batteries are not designed for repeated discharge/recharge cycles and will degrade much faster.

How the Backup System Works During a Power Outage

The 443PS works automatically, so you don’t have to worry when the lights go out.

1. Normal Operation: When utility power is active, the 443PS keeps your pump running on AC power while maintaining battery charge in the background.
2. Power Loss: As soon as an outage is detected, it instantly switches to battery power, keeping your sump pump operational.
3. Power Restored: When power returns, it resets back to AC mode and begins recharging the battery for next time.

This system doesn’t require any manual intervention. Plug it in, connect your pump and battery, and let it do its job.

Frequently Asked Questions

What sump pump wattage is compatible with the 443PS?

It’s rated for sump pumps drawing 600 watts or less (steady-state ≤ 5A). Check your pump’s label or manual to verify.

How long can this power a sump pump during an outage?

Runtime varies based on battery size and pump load. Most setups can expect 8–12 hours with a quality deep cycle battery. You can add additional batteries for extended performance.

Will the backup turn on automatically?

Yes, automatic switchover is built in. The 443PS will detect a power failure and immediately begin drawing battery power.

How often should I replace the battery?

Deep cycle batteries should be tested annually and typically replaced every 3–5 years, depending on use and climate.

Protect Your Home With a Reliable Sump Pump Battery Backup

When water is pouring in, you don’t have time to tinker with DIY battery setups or hope your inverter holds out. The 443PS was designed to take the guesswork out of backup power. It's compact, innovative, and made in the USA for long-term reliability.

Whether you're protecting a finished basement, equipment, or your entire lower level, this unit offers:

• Fast installation, plug in and go
• True peace of mind, especially during storm season
• Compatibility with most common sump pumps (up to 600W)

Don’t let the next power outage catch you unprepared.