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Briggs & Stratton PowerProtect 13kW Battery Warmer, 240V

$162
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Customer reviews & Questions

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Customer Reviews
  • Reviews (70)
  • Questions (3)
MICHELLE
04/06/2025
Nice low current draw; meter shows barely a blip.
malik
08/29/2024
install was a breeze twenty minutes tops and i am no electrician
lauren baker
06/22/2025
does it keep working during an outage??
A1 SolarStore
Yes. It draws power from the generator’s control circuit, so it stays on even when utility power is down.
Jordan
10/19/2024
Is it the right size for my PowerProtect 13 kW ?
A1 SolarStore
Yes. It’s an exact fit for the PP13 battery tray — no trimming or shims required.
ELLIE
08/15/2024
Does it run all the time or only when cold
A1 SolarStore
A built-in thermostat powers the pad only when temps drop, so it won’t waste energy in warmer weather.

Specification

ManufacturerBriggs & Stratton
Manufacturer Part #6921

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About product

The Briggs & Stratton PowerProtect 13 kW Battery Warmer, 240 V keeps your generator’s starting battery at the perfect temperature for fast, confident cranking — even when the thermometer plunges. Engineered as an exact‑fit accessory for PowerProtect 13 kW air‑cooled standby units, this thermostatically controlled heater pad slips beneath the battery and gently maintains warmth without over‑heating or draining power.

  • Factory cold‑weather accessory for PowerProtect 13 kW standby generators
  • 240 V flexible silicone heater pad with built‑in thermostat
  • Automatically maintains battery temperature in sub‑freezing conditions
  • Low‑wattage draw for negligible impact on operating costs
  • Moisture‑sealed design stands up to vibration and outdoor environments
  • Plug‑and‑play harness and mounting plate included — no cutting or splicing

Cold‑weather starting confidence

As temperatures fall, battery chemistry slows and cranking amps sag. The warmer senses the chill and raises the battery’s core temperature, safeguarding the juice your generator needs to leap to life the instant the lights go out.

Designed for PowerProtect

This kit aligns with the PP13’s factory‑provided accessory port and battery tray. Pre‑terminated connectors, precise harness lengths, and a purpose‑built mounting plate make the upgrade seamless for installers and DIYers alike.

Built to brave the elements

The silicone pad and sealed thermostat are rated for the heat, cold, vibration, and humidity found inside a generator enclosure. Forget flimsy aftermarket wraps — this OEM solution is purpose‑built to last.

DIY‑friendly installation

Clear, illustrated instructions walk you through battery removal, pad placement, and harness routing. All required hardware ships in the box.

Electrical Ratings

Voltage: 240 VAC • Heater Type: Silicone pad with thermostat • Draw: Low wattage (nominal) • Activation: Thermostat‑controlled

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  • Overview
  • FAQ

Generator Accessories: Essential Upgrades for Uninterrupted Power

⚡ Key Takeaway: From battery warmers to smart transfer switches, generator accessories safeguard your investment, extend equipment life, and deliver hands-free, reliable power when the grid goes dark.

Why Generator Accessories Matter

Generators supply critical electricity during outages, but their performance hinges on a suite of supporting components. Battery and oil warmers ensure cold-weather starts, maintenance kits keep engines running at peak efficiency, and power management devices balance loads so smaller generators can handle bigger jobs. Automatic transfer switches (ATS) complete the ecosystem by shifting household circuits to generator power in seconds—no cords, no manual intervention.

Industry analysts value the global ATS market at $1.46 billion in 2024, with forecasts topping $1.75 billion by 2033

Key Generator Accessories

❄️ Battery Warmers

Insulated heating pads keep starter batteries between 40–55 °F so cranking amps don’t plummet in freezing weather—eliminating up to 60 % of cold-start failures.

🛠️ Maintenance Kits

OEM-matched kits bundle air and oil filters, spark plugs, engine oil, funnels, and shop towels, streamlining annual or 100-hour service and cutting unplanned downtime.

🌡️ Oil Warmers

Crank-case and oil-filter heaters prevent viscosity spikes that starve engines of lubrication, reducing wear and shortening warm-up times in sub-freezing climates.

⚙️ Power Management Modules

Smart relays prioritize heavy loads (HVAC, water heaters) and shed non-essentials, letting you run a lighter, more fuel-efficient generator without overload risk.

📊 Power Monitors

Wi-Fi-enabled monitors deliver real-time runtime hours, fault codes, and fuel levels to your phone—now a standard feature on many residential standby systems.

🔌 Transfer Switches

Automatic and manual ATS units isolate your home from the utility and switch designated circuits to generator power within seconds, eliminating dangerous back-feed and manual cord swaps.

Benefits of Accessorizing Your Generator

🔋 Reliability in Extreme Conditions

Battery oil warmers cut cold-start failures by as much as 80 % at −20 °F, ensuring your generator fires when you need it most.

💡 Smarter, Smaller Systems

With intelligent power management, homeowners often downsize one generator class—saving $500–$1,500 up front and reducing fuel consumption.

Installation & Maintenance Tips

⚙️ Proper Setup & Service

Install battery and oil heaters on a thermostat-controlled circuit; verify ATS amperage matches generator output and local code. Follow manufacturer service intervals—most air-cooled units need maintenance every 100–200 hours or annually, whichever comes first.

Cost Snapshot

  • Battery warmers: $100 – $250
  • Maintenance kits: $40 – $100
  • Oil warmers: $90 – $150
  • Power management modules: $300 – $600
  • Power monitors: $200 – $400
  • Automatic transfer switches: $400 – $2,000

Frequently Asked Questions

Do I need a battery warmer in a mild climate?

If winter temperatures rarely drop below 40 °F, a battery warmer is optional. However, if you experience occasional freezes, adding one protects against rare but critical cold-start failures.

How often should I change generator oil and filters?

Most manufacturers recommend service every 100 hours of runtime or once per year—whichever comes first. Always use the correct maintenance kit for your model.

Can I install a transfer switch myself?

Manual switches may be homeowner-installable in some jurisdictions, but automatic transfer switches usually require a licensed electrician to meet code and warranty requirements.

What’s the difference between a power monitor and a power management module?

A power monitor lets you view status and fault data, while a power management module actively controls and prioritizes loads to prevent generator overload.

Will accessories void my generator warranty?

Using manufacturer-approved accessories maintains warranty coverage. Third-party parts may be acceptable if they meet OEM specifications—check your warranty booklet.

Ready to Upgrade Your Generator System?

Browse our curated selection of battery warmers, maintenance kits, power management devices, and smart transfer switches to keep your generator running flawlessly, no matter the weather.

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What energy storage solutions does Briggs & Stratton offer?

They provide SimpliPHI® batteries, Sol-Ark® hybrid inverters, and AccESS™ integrated systems for residential and commercial energy storage.

How safe are Briggs & Stratton batteries?

Briggs & Stratton uses Lithium Ferro Phosphate (LFP) chemistry, known for its thermal stability and long lifespan, along with a Battery Management System (BMS) for monitoring.

Do Briggs & Stratton storage systems qualify for solar incentives?

Yes, they are eligible for the 30% Federal Solar Tax Credit (ITC) and may qualify for state and local rebates.

Are their products compatible with generators?

Yes, they can integrate with Briggs & Stratton standby generators and other third-party generators for hybrid power solutions.