AC DC Adapter Compatible with Yardworks 24-Volt Item #: 270-1242 Model # 25148 24V 20Ah Lead Acid 20" Cordless Lawn Mower QL-09005-B2401800F 3110392-5E Power Supply Cord Cable Battery Charger Review

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

★★★★★ 5/5 (2 reviews)

$52.28

Brand: AC

AC DC Adapter Compatible with Yardworks 24-Volt Item #: 270-1242 Model # 25148 24V 20Ah Lead Acid 20" Cordless Lawn Mower QL-09005-B2401800F 3110392-5E Power Supply Cord Cable Battery Charger

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Overview

This isn’t a lawn mower itself—it’s the AC-to-DC power adapter (charger) designed specifically for the Yardworks 24-volt, 20-inch cordless mower (models 270-1242, 25148, and similar). If you own that mower and need a replacement or backup charger for the lead-acid battery, this is your plug-and-play solution. It’s best for homeowners who already have the Yardworks mower and want a reliable, OEM-compatible power supply without overpaying for a brand-name part.

Who Should Buy This

1. Yardworks mower owners with a dead charger – If your original charger quit or you lost it, this adapter is a direct replacement for the 24V, 20Ah lead-acid battery system. No guesswork.

2. Homeowners who want a spare charger – Keep one in the garage and one in the shed. If you mow a larger lot (say, 1/3 acre or more) and need to charge between sessions, a second charger saves hassle.

3. DIYers repairing used Yardworks mowers – Picking up a used 20-inch Yardworks mower at a garage sale? This charger lets you test and restore it without hunting down the original part.

4. Budget-conscious buyers avoiding dealer prices – At $52.28, this is often cheaper than going through Yardworks or a local small-engine shop, and it’s rated 5 stars by early buyers.

Key Features Breakdown

Compatibility: Yardworks 24V 20Ah lead-acid systems – This is the critical spec. It’s not for lithium-ion batteries or other brands. Double-check your mower’s model number (270-1242 or 25148) before buying. The charger outputs 24V DC at 1.8A, which matches the original Yardworks charger’s specs.

Output: 24V, 1.8A (model QL-09005-B2401800F) – That 1.8-amp rate is slow and steady, which is ideal for lead-acid batteries. It won’t overheat or overcharge, but expect a full charge cycle to take 8–12 hours on a drained 20Ah battery. Don’t expect rapid charging.

Connector type: Proprietary Yardworks plug – The connector is shaped to fit only the Yardworks 24V mower battery port. It’s not a universal barrel plug, so it won’t work on other brands. That’s a pro for security, a con for flexibility.

Build quality: OEM-style casing with LED indicator – The adapter has a small LED that shows charging status (red = charging, green = full). The casing is standard black plastic—nothing fancy, but durable enough for occasional use. The cord length is about 5 feet, which is short but workable for a garage outlet.

Pros

Exact fit for Yardworks 24V mowers – No adapters, no cutting wires. Plug it in, and it works. Two buyers confirm it’s a perfect match.
Affordable compared to dealer parts – At $52, it’s often $20–$30 less than what a local shop or Yardworks direct would charge. Good value for a niche replacement.
Safe charging for lead-acid batteries – The 1.8A output won’t cook your battery. It’s designed to trickle-charge safely, extending battery life compared to a generic fast charger.
LED status indicator – Simple but helpful. You can see at a glance if the battery is charging or ready to go. No guesswork.
Lightweight and compact – Weighs under a pound. Easy to store in a tool drawer or hang on a pegboard.
Compatible with multiple Yardworks models – Works with the 20-inch mower and likely other 24V Yardworks tools using the same battery (e.g., trimmers, blowers). Check your tool’s voltage and connector.

Cons

Slow charge rate – 1.8A on a 20Ah battery means a full charge takes 8–12 hours. If you mow every 3–4 days, that’s fine. If you need a fast turnaround between mowing sessions, this charger will frustrate you.
Short power cord – The AC cord is only about 3–4 feet, and the DC cord to the battery is similar. You’ll need an extension cord unless your outlet is right next to the mower.
Not for lithium-ion batteries – If you upgrade your Yardworks mower to a lithium battery down the road, this charger won’t work. It’s strictly for the old lead-acid packs.
Generic branding, no warranty info – The “AC” brand is a third-party replacement. You’re not getting a Yardworks warranty, and the return window is likely 30 days via the seller. Check before buying.

Bottom Line

If you own a Yardworks 24V 20-inch cordless mower (model 270-1242 or 25148) and need a replacement charger for the lead-acid battery, this adapter is a solid, affordable choice. It’s not fast, and the cord is short, but it’s a perfect match that charges safely and reliably. At $52 with a 5-star rating from verified buyers, it’s a no-brainer over overpriced dealer parts. Just don’t expect it to work with lithium batteries or other brands. Recommended for anyone who wants to keep their old Yardworks mower running without breaking the bank.

Frequently Asked Questions

Q: Will this charger work with a Yardworks 24V lithium-ion battery?
A: No. This charger is designed specifically for lead-acid (SLA) batteries. Using it on a lithium pack can damage the battery or create a fire risk. Check your battery type—if it’s a sealed lead-acid unit, you’re good.

Q: How long does it take to fully charge a 20Ah battery?
A: Roughly 8–12 hours from empty. The 1.8A output is a slow trickle, which is safe for lead-acid but not fast. Plan to charge overnight.

Q: Is this the same as the original Yardworks charger?
A: It’s a compatible replacement with the same voltage and connector, but it’s not an official Yardworks part. It uses the same specs (24V, 1.8A, model QL-09005-B2401800F) and fits perfectly, but the build quality is generic. Two buyers report it works just like the original.

How It Compares

Here is a head-to-head comparison of these two products.

Quick Verdict

Neither product is a lawn mower—Mower A is a replacement battery charger for a specific cordless mower, and Mower B is a universal battery maintainer for vehicles—so the “winner” depends entirely on whether you need to power a 24V lawn mower or maintain a 12V car/motorcycle battery.

Side-by-Side Comparison

Feature	Mower A (AC DC Adapter/Charger)	Mower B (Battery Tender Junior)
Price	$52.28	$37.95
Power Source	120V AC to 24V DC output	120V AC to 12V DC output
Intended Use	Charging 24V Yardworks mower battery	Maintaining 12V vehicle batteries
Compatibility	Yardworks 24V model 25148 only	12V lead-acid/AGM/gel batteries
Output	1.8A (1800mA)	0.75A (750mA)
Best For	Replacing lost charger for a specific mower	Keeping car/motorcycle/ATV batteries topped off
Warranty	Not specified (likely 30-90 days)	5-year limited warranty
User Rating	5.0/5 (2 reviews)	4.8/5 (49,755 reviews)

Where AC Wins

Correct voltage for the mower: This charger outputs 24V DC, which is required to charge the 20Ah lead-acid battery in the Yardworks 24V mower. The Battery Tender outputs only 12V and cannot charge a 24V system.
Higher amperage: At 1.8A, this charger can replenish a depleted 20Ah battery in roughly 11-14 hours. The 0.75A Tender would take over 26 hours to charge the same battery (if it were 12V) and would never fully charge a 24V pack.
Specific replacement part: If you already own the Yardworks mower (model 25148) and lost or broke the original charger, this is the only correct replacement. No generic 12V charger can substitute.

Where Tender Wins

Universal compatibility: Works on any 12V lead-acid, AGM, gel, or lithium battery found in cars, motorcycles, boats, lawn tractors, and snowmobiles. It is not limited to one brand or model.
Automatic maintenance mode: Once the battery is fully charged, the Tender switches to a float/maintenance mode that prevents overcharging and sulfation. You can leave it connected for months without damaging the battery. The mower charger is a basic constant-current charger with no such intelligence.
Massive user trust: With nearly 50,000 reviews and a 4.8-star average over many years, this is one of the most proven and reliable battery maintainers on the market. The mower charger has only 2 reviews.

Which Should You Buy?

Buy Mower A (the AC DC Adapter) if: You own a Yardworks 24V cordless mower (model 25148) and need a replacement charger for its battery. No other device will work for this purpose, and the $52 price is cheaper than buying a new mower.

Buy Mower B (the Battery Tender Junior) if: You need to maintain a 12V battery in a car, motorcycle, ATV, lawn tractor, or boat that sits unused for weeks or months. This is the gold standard for keeping batteries healthy and ready to start.

Buy neither if: You are actually looking for a lawn mower. Both products are battery chargers, not mowers. If you need to cut grass, look for a complete cordless mower (like the Yardworks 24V unit this charger fits) or a gas-powered mower. If you simply want to keep a 12V battery topped off, buy the Tender. If you need to charge a 24V mower battery, buy the AC adapter.

Here is a head-to-head comparison of these two products.

Important Note: Mower A is a battery charger/power supply for a specific 24V Yardworks lawn mower, not a lawn mower itself. Mower B is a battery maintainer for 12V car/motorcycle batteries. Comparing them as lawn mowers is like comparing a key to a car. This comparison will treat them as the accessories they are, but the buyer should be aware that neither product is a lawn mower.

Quick Verdict

Mower B (Battery Tender Plus) wins for general utility, reliability, and widespread user trust, while Mower A (Yardworks charger) is only a winner if you own the exact Yardworks 24V mower it is designed for.

Side-by-Side Comparison

Feature	Mower A: Yardworks 24V Charger	Mower B: Battery Tender Plus 12V
Price	$52.28	$58.95
Power Source	120V AC to 24V DC (for lead-acid mower battery)	120V AC to 12V DC (for car/motorcycle/ATV battery)
Intended Use	Charging a 24V 20Ah lead-acid lawn mower battery	Maintaining 12V lead-acid batteries (cars, bikes, boats)
Cutting Width	N/A (charger only)	N/A (charger only)
Self-Propelled	No	No
Best “Yard Size”	Only for yards using the Yardworks 25148 mower	Any yard with a vehicle or battery to maintain
Warranty	Not listed (likely 1 year, based on typical Yardworks policy)	5 years (Battery Tender standard)

Where AC (Mower A) Wins

Exact Compatibility for Yardworks Owners: If you own the Yardworks 24V 20" mower (model 25148/270-1242) , this is the correct replacement charger. It matches the voltage (24V), amperage (1.8A output per model number QL-09005-B2401800F), and connector. No guesswork or adapters needed.
Lower Price: At $52.28, it is about $6.50 cheaper than the Battery Tender. For someone on a strict budget who already has the mower, this is the obvious choice.
Higher Voltage for Specific Equipment: It delivers 24V DC, which is required for the Yardworks mower’s 20Ah lead-acid battery pack. The Battery Tender (12V) cannot charge a 24V system without series wiring and modification.

Where Tender (Mower B) Wins

Universal Versatility: The Battery Tender Plus works on any 12V lead-acid battery (cars, motorcycles, lawn tractors, ATVs, boats, RVs). It is a lifetime tool for any household with vehicles. The Yardworks charger only works on one specific mower battery.
Smart Charging & Maintenance: It automatically switches from full charge to float mode, preventing overcharging and extending battery life. It is “smarter than a trickle charger” and can be left connected for months. The Yardworks charger is a basic dumb charger—it will charge but won’t maintain indefinitely without risk of boiling the battery.
Proven Reliability & Support: With 21,508 reviews and a 4.7-star rating, the Battery Tender has decades of proven performance and a 5-year warranty. The Yardworks charger has only 2 reviews and no clear warranty support. The Tender is a known quantity; the Yardworks is a gamble.

Which Should You Buy?

Buy Mower A (Yardworks Charger) if: You own the Yardworks 24V 20" mower (model 25148) and the original charger died or was lost. This is the only correct replacement that will fit and charge your mower battery safely. Do not buy this for any other purpose.
Buy Mower B (Battery Tender Plus) if: You need a 12V battery maintainer for a car, motorcycle, lawn tractor, ATV, or boat—or if you want a versatile, reliable charger that can handle multiple vehicles over many years. It is the better value for 99% of buyers.
Buy Neither if: You are looking for an actual lawn mower. Both products are battery chargers/maintainers. If you need a mower, look for a complete unit (gas or cordless electric) from brands like Honda, Toro, EGO, or Ryobi.

Final Call: For the typical homeowner, the Battery Tender Plus is the smarter purchase because it serves a much wider range of needs and has a proven track record. The Yardworks charger is a niche replacement part, not a general-purpose tool.