Husqvarna BLi20 Replacement 40V Battery Review

Name: Husqvarna BLi20 Replacement 40V Battery
Brand: Husqvarna
Price: 249.99 USD
Availability: InStock

By the Mowers.Cloud editorial team · How we research & rate · Updated June 2026

★★★★★½ 4.5/5 (60 reviews)

$249.99

Brand: Husqvarna

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Overview

The Husqvarna BLi20 is a 40-volt lithium-ion replacement battery designed exclusively for the brand’s 40V battery platform of string trimmers, blowers, chainsaws, and lawn mowers. It’s not a mower itself, but an essential power source for homeowners who already own Husqvarna 40V equipment and need a spare or replacement battery to extend runtime or replace a worn-out original. This battery is best for users who are committed to Husqvarna’s cordless ecosystem and want reliable, fade-free power for medium-duty yard tasks.

Who Should Buy This

Homeowners with 1/4 to 1/2 acre lots who own a Husqvarna 40V mower and need a second battery to finish the job without waiting for a recharge. A single BLi20 might get you through a small lawn, but a second one lets you swap and keep cutting.
Husqvarna 40V tool owners who have multiple tools (trimmer, blower, chainsaw) and want one battery to rule them all. This battery fits the entire 40V lineup, so you can share it across devices.
DIYers replacing a dead or fading original battery after 2-3 seasons of use. If your original Husqvarna 40V battery no longer holds a charge, the BLi20 is the direct OEM replacement that ensures proper fit and performance.
Homeowners who hate gas cans and pull cords but still want Husqvarna’s build quality. If you’ve already invested in the brand’s cordless tools, this battery keeps you in the ecosystem without needing to buy a whole new kit.

Key Features Breakdown

40V Lithium-Ion Technology: This isn’t a 20V or 36V battery—40V gives you more torque and runtime for heavier tasks like mowing thick grass or running a chainsaw. It’s the sweet spot between power and weight for residential use.
4.0 Ah Capacity: At 4 amp-hours, this battery delivers roughly 40-50 minutes of runtime on a Husqvarna 40V mower under normal conditions. That’s enough for a typical 1/4-acre lawn, but plan on a second battery if your grass is thick or your lot is larger.
Fade-Free Power: Unlike some older batteries that slow down as they drain, the BLi20 maintains consistent power output until it’s nearly empty. This means your mower won’t bog down mid-lawn—you’ll get full blade speed right up to the last cut.
Battery Status Indicator: A three-LED gauge on the battery shows remaining charge at a glance. No guessing if you’ll finish the yard—just press the button and see if you need to swap.
Compatible with Husqvarna 40V Platform: This battery fits all current Husqvarna 40V tools, including mowers, trimmers, blowers, chainsaws, and hedge trimmers. If you own multiple tools, this one battery works across them all.
OEM Quality and Fit: This is a genuine Husqvarna part, not a third-party knockoff. It locks into the tool securely, charges on the standard Husqvarna 40V charger, and is built to the same durability standards as the tool itself.

Pros

Consistent power throughout the run – No noticeable slowdown as the battery drains, so your mower cuts cleanly from start to finish.
Universal fit across Husqvarna 40V tools – One battery works in your mower, trimmer, blower, and chainsaw. That’s real convenience.
Built-in charge indicator – The three-LED display is simple and reliable. You know exactly where you stand before starting a task.
OEM reliability – Because it’s a genuine Husqvarna part, you get proper voltage management, safe charging, and a battery that communicates correctly with your tools.
Lightweight at just over 2 pounds – Easy to swap mid-task without adding noticeable weight to the tool.
Eco-friendly alternative to gas – Zero emissions, no fuel mixing, and no pull-start headaches. Just click, cut, and charge.

Cons

High price – At $249.99, this battery costs nearly as much as some budget cordless mowers. You’re paying for the Husqvarna name and OEM quality, but it stings.
Limited to Husqvarna’s ecosystem – This battery won’t work with other brands. If you ever switch tools, you’re starting from scratch.
4.0 Ah is modest for larger lawns – On a 40V mower, expect about 40-50 minutes of runtime. That’s fine for a 1/4 acre, but if your lawn is 1/2 acre or more, you’ll need two batteries or a larger-capacity option.
No rapid charging included – The battery charges in about 60 minutes on a standard Husqvarna charger, but there’s no fast-charge feature built in. You’ll need to plan your charging schedule.

Bottom Line

The Husqvarna BLi20 is a solid, no-surprises replacement battery for anyone already invested in the brand’s 40V cordless system. It delivers consistent power, fits all compatible tools, and includes a handy charge indicator that takes the guesswork out of runtime. But at $249.99, it’s expensive for a 4.0 Ah battery, and if you’re starting from scratch, you might get better value from a competitor’s kit. I recommend this battery if you already own Husqvarna 40V gear and need a spare or replacement—it’s the right choice for keeping your tools running smoothly. If you’re new to the brand, consider a combo kit that includes a battery and charger for a better deal.

Frequently Asked Questions

Q: How long does the Husqvarna BLi20 battery last on a single charge?
A: Runtime depends on the tool and workload. On a Husqvarna 40V mower cutting normal grass, expect 40-50 minutes. On a string trimmer or blower, you’ll get closer to 30-40 minutes under heavy use. Thick, wet grass will drain it faster.

Q: Can I use this battery with older Husqvarna 40V tools?
A: Yes, as long as the tool is part of Husqvarna’s 40V battery platform (look for the “40V” branding on the tool). The BLi20 is backward-compatible with most models from the past 5-7 years, but check your tool’s manual to confirm.

Q: Does this battery come with a charger?
A: No, the BLi20 is a standalone battery. You’ll need a Husqvarna 40V charger (sold separately) or a charger from a previous Husqvarna 40

How It Compares

Here is a head-to-head comparison of the two products you listed.

Important Note: These two products are not direct competitors. The Husqvarna BLi20 is a replacement battery for a lawn mower. The Gorilla Carts dump cart is a tow-behind utility wagon for a lawn tractor or ATV. One is a power component; the other is a hauling accessory. The comparison below treats them as two distinct purchase options for a lawn care setup, evaluating which is a better investment for your money right now.

Quick Verdict

The Gorilla Carts dump cart wins for sheer value and versatility, because it is a complete, highly-rated tool that solves a common yard work problem (hauling heavy loads), while the Husqvarna battery is a replacement part that offers no function without an existing mower.

Side-by-Side Comparison

Feature	Husqvarna BLi20 Battery	Gorilla Carts Dump Cart
Price	$249.99	$205.99
Power Source	40V Lithium-Ion Battery	Manual (towed by vehicle)
Cutting Width	N/A (battery only)	N/A (hauling capacity: 6 cu ft)
Self-Propelled	N/A (battery powers mower)	No (requires towing)
Best Yard Size	¼–½ acre (with compatible mower)	Any size with a towing vehicle
Warranty	3-year limited	2-year limited

Where Husqvarna Wins

Enables Cordless Operation: If you already own a Husqvarna 40V mower, this battery is essential for cordless freedom. Without it, your mower is useless. It’s a necessary replacement, not an upgrade.
Lightweight & Portable: Weighing about 3–4 pounds, the battery is easy to carry, swap, and store. You can charge it in a garage and walk it to your mower in seconds.
Brand Compatibility: Husqvarna’s 40V system is durable and widely available. If you have multiple Husqvarna 40V tools (trimmer, blower), this battery works across them, offering system-wide backup power.

Where Gorilla Wins

Immediate Versatility: The Gorilla cart works with any lawn tractor, ATV, or UTV with a standard hitch. It hauls mulch, soil, firewood, stone, or garden waste. It’s a complete tool, not a component.
Massive User Approval: With 30,488 reviews and a 4.7-star average, this cart has proven reliability. It’s one of the most popular lawn accessories on the market. The Husqvarna battery has only 60 reviews.
Better Value for the Money: For $205.99, you get a heavy-duty 1200 lb capacity cart with pneumatic tires and a quick-release dump feature. For $249.99, you get a single battery that does nothing without a mower. The cart gives you more function per dollar.

Which Should You Buy?

Buy Mower A (Husqvarna Battery) if:

You already own a Husqvarna 40V mower and your original battery has died or degraded. This is a direct replacement part, not a new purchase.
You need a spare battery for a large lawn (over ¼ acre) where one charge isn’t enough to finish mowing.
You are building a Husqvarna 40V tool system and want a backup battery that works with your trimmer, blower, and chainsaw.

Buy Mower B (Gorilla Carts Dump Cart) if:

You own a riding mower, lawn tractor, or ATV and frequently move heavy materials (soil, mulch, stone, firewood, yard waste). This cart saves your back and your time.
You want a highly-rated, proven product that solves a real problem (hauling) and has thousands of satisfied users.
You are looking for the best value for your money. The cart is cheaper, more versatile, and immediately usable, while the battery is a niche replacement item.

Buy Neither if:

You need a complete lawn mower. The battery is just a part, and the cart is a trailer. For a mower, look at a self-propelled gas or electric model.

Here is a head-to-head comparison of the Husqvarna BLi20 40V Battery and the American Lawn Mower Company 16-Inch 5-Blade Reel Mower.

Quick Verdict

The American Lawn Mower Company reel mower wins for overall value and reliability, as it is nearly $100 cheaper, requires no fuel or charging, and is backed by over 22,000 reviews, making it the practical choice for small, flat lawns.

Side-by-Side Comparison

Feature	Husqvarna BLi20 (Battery Only)	American Lawn Mower Co. 16-Inch Reel
Price	$249.99 (battery only, no mower)	$154.00 (complete mower)
Power Source	40V Lithium-Ion Battery	Manual (push-powered reel)
Cutting Width	N/A (battery only; compatible with Husqvarna 40V mowers, typically 18–21")	16 inches
Self-Propelled	No (battery is for self-propelled or push mowers)	No (manual push)
Best Yard Size	¼ acre or smaller (with mower)	¼ acre or smaller
Warranty	2-year limited (battery)	2-year limited

Note: The Husqvarna BLi20 is a replacement battery, not a complete mower. It is intended for use with Husqvarna 40V mowers (sold separately). The comparison below assumes you already own a compatible Husqvarna mower.

Where Husqvarna Wins

Power and Convenience – The 40V battery delivers consistent, motorized power. You don’t need to manually push a reel; the mower does the work. This is ideal for thicker grass, slopes, or anyone who wants to avoid physical exertion.
Battery Ecosystem – Husqvarna’s 40V system is shared across trimmers, blowers, and chainsaws. If you already own Husqvarna tools, this battery is a drop-in replacement, saving you from buying a new charger or power system.
Cut Quality on Tall/Wet Grass – A powered mower with a blade spinning at high RPM can cut tall, damp, or uneven grass that would clog or bend a reel mower. This battery gives you reliable cutting in less-than-ideal conditions.

Where American Lawn Mower Wins

Price and No Ongoing Costs – At $154, you get a complete, ready-to-use mower. There are no batteries to replace, no fuel to buy, and no electricity costs. Over five years, the American mower is significantly cheaper.
Ultra-Lightweight and Low Maintenance – The reel mower weighs about 20 pounds (versus 40–60 pounds for a motorized mower). It has no engine, no spark plugs, no oil changes, and no battery degradation. You just sharpen the blades once a year.
Environmentally Friendly and Quiet – Zero emissions and almost silent operation. You can mow early in the morning without disturbing neighbors. It also doesn’t stir up dust or pollen, which is better for allergy sufferers.

Which Should You Buy?

Buy Mower A (Husqvarna BLi20) if:

You already own a Husqvarna 40V mower and need a replacement battery. This is a direct, high-quality drop-in.
You have a medium-sized yard (up to ¼ acre) with thick, tall, or damp grass that a reel mower can’t handle.
You want the convenience of motorized mowing without the hassle of gas or cords, and you’re willing to pay a premium for power.

Buy Mower B (American Lawn Mower Co. Reel) if:

You want the lowest long-term cost and don’t mind a little physical effort. It’s perfect for small, flat lawns (under 5,000 sq. ft.).
You value simplicity and low maintenance. No batteries to charge, no oil to change, no parts to replace.
You mow early or in noise-sensitive areas and want a whisper-quiet, zero-emission tool that also gives a clean, scissor-like cut on short grass.

Buy neither if:

You need a complete mower and don’t already own a Husqvarna 40V system. In that case, buy a full mower (e.g., a Ryobi 40V or a gas model) instead of just a battery.