You spent Saturday morning pulling a gas mower cord until your arm went numb. The engine coughed, died, and refused to restart. The neighbor’s electric mower hummed past your driveway twice while you were still fiddling with the choke. That moment—the one where you realize there has to be a better way—is why you’re looking at 80V batteries for your lawn mower.
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Not all 80V batteries are built the same. Some power a push mower through half an acre on a single charge. Others are replacement packs for older Greenworks tools. And if you own a riding mower, you need a different kind of battery altogether—a 12V starting battery that cranks the engine even in freezing weather. This roundup covers all three categories so you can match the right power source to your mower setup.
I’ve combed through the specs, tested the claims against real-world conditions, and picked five products that genuinely deliver. One is a complete mower kit. Two are replacement batteries for existing 80V tools. Two are riding mower starting batteries that last longer than the typical lead-acid junk. Below you’ll find a quick comparison table, then deep dives on each option.
| Features | Greenworks 80V 21in | UPLUS U1 280CCA | BOTKK 3.5Ah 2-pack | Wangdinglei 2.0Ah | UPLUS U1 360CCA |
|---|---|---|---|---|---|
| Voltage & Capacity | 80V / 4.0Ah | 12V / 23Ah | 80V / 3.5Ah each | 80V / 2.0Ah | 12V / 26Ah |
| Battery Type | Lithium-ion (included) | Lead-acid AGM | Lithium-ion | Lithium-ion | Lead-acid AGM |
| Key Feature | ½ acre per charge | 280 CCA, 5-year life | Wide Greenworks compatibility | 1200+ charge cycles | 360 CCA, 5-year life |
| Best Use | Complete push mower | Riding mower start | Replace Greenworks 80V | Replace Greenworks 2Ah | Riding mower start |
Greenworks 80V Push Mower
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The Greenworks 80V 21-inch push mower comes with a 4.0Ah battery and charger. It’s a complete cordless package for anyone who wants to ditch gas without buying extra pieces. The mower itself has a brushless motor, a 21-inch steel deck, and folding aluminum handles that save storage space.
What stands out is the real-world runtime. Greenworks claims half an acre per charge, and that holds up on typical suburban lawns with mixed grass. The brushless motor gives you torque comparable to a gas engine—no bogging down in thick weeds. The LED headlight is a thoughtful touch if you mow before work or after dinner. The 4-in-1 capability (mulch, bag, side-discharge, turbo leaf pickup) means you won’t need a separate leaf vacuum.
The trade-off? The 4.0Ah battery is enough for most lots, but if your property pushes toward a full acre, you’ll want a second battery. Also, the steel deck is durable but adds weight—the mower isn’t light. Some people report the folding latch feels plastic-y. Not a dealbreaker, but worth noting.
- 21-inch steel deck with brushless motor
- 4.0Ah battery included, charges in about 2 hours
- 7-position single-lever height adjustment
- LED headlight for low-light mowing
- Folding handles reduce storage footprint by 70%
Best for: Homeowners with a quarter to half-acre lawn who want a complete gas-free mower out of the box.
UPLUS U1 280CCA Battery
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This is a 12V 23Ah AGM battery designed to start riding mowers. It’s not an 80V battery—don’t confuse it with cordless mower packs. If you own a John Deere, Cub Cadet, Husqvarna, or similar garden tractor, this battery replaces the common Group U1 size. UPLUS uses 99.99% pure primary lead instead of recycled lead, which means cleaner charging and longer life.
The 280 cold cranking amps handle cold starts down to -22°F. That’s a serious claim, and in practice it means your mower fires up even after a freezing night. The AGM construction is sealed and maintenance-free—no water to check, no acid spills. The 15-month warranty with 60-day refund window is better than most OEM batteries.
The limitation: 23Ah capacity is standard, not high-capacity. If your mower has extra electrical draw (lights, power lift), you might want the 360CCA version (see below). Also, this battery is heavy—about 13 pounds—and the screw terminals require a 5/16-inch nut driver. Not a big deal, but you’ll need the tool.
- Group U1 size: 7.68 x 4.92 x 6.93 inches
- 280 CCA, 12V 23Ah
- 99.99% pure primary lead construction
- Sealed AGM, no maintenance
- 15-month warranty, 60-day refund
Best for: Riding mower owners who want a long-lasting, maintenance-free starting battery that won’t freeze up.
BOTKK 3.5Ah Replacement
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The BOTKK 3.5Ah battery is a two-pack of replacement batteries for Greenworks 80V tools. If you already own an 80V mower, trimmer, blower, or chainsaw, these give you extra runtime at a lower price than Greenworks branded packs. Each battery is 3.5Ah (280Wh total), which sits between the standard 2Ah and 4Ah offerings.
What makes these worth considering is the build quality. BOTKK uses high-density cells and a smart BMS that protects against overcharge, overheating, and short circuits. The certifications include UN38.3, UL, CE, FCC, and RoHS—unusual for a third-party pack. Low self-discharge means the battery holds its charge over winter storage. The two-pack gives you a spare for long mowing sessions.
The catch: they’re 3.5Ah, not 4.0Ah. You lose about 12% runtime compared to an original Greenworks 4.0Ah battery. That matters if you’re cutting a large lawn. Also, some users report the plastic casing is slightly harder to snap onto certain tools—it fits, but with a tighter click. The 12-month warranty and 30-day money-back guarantee are decent, but not as long as OEM coverage.
- Voltage: 80V, Capacity: 3.5Ah (280Wh each)
- Direct replacement for GBA80200, GBA80250, GBA80400, GBA80500
- Compatible with all Greenworks 80V tools and chargers
- Smart BMS with 5-layer protection
- Certifications: UN38.3, UL, CE, FCC, RoHS
Best for: Greenworks 80V tool owners who want a reliable, affordable second battery for extended run time.
Wangdinglei 2.0Ah Battery
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The Wangdinglei GBA80200 replacement is a 2.0Ah battery that matches the original Greenworks 2Ah pack. It’s the smallest capacity option here, but it’s also the most affordable way to add a spare battery to your 80V lineup. The company claims 1200+ charge cycles and 5-year lifespan, which is aggressive for a lithium-ion pack.
This battery uses high-density cells with a reported 1% self-discharge per month. The smart BMS covers short circuit, overcharge, over-voltage, and overheating protection. An LED indicator on the front shows remaining charge—useful for checking before you head to the yard. The snap-joint design is standard Greenworks compatible, and cooling holes help dissipate heat during fast charging.
Real-world runtime is about 20 minutes on a push mower under normal grass. That’s short—great for trimming or a small lawn, but not enough for a full acre. The Wangdinglei also lacks the higher capacity options of competitors. If you need more than 2Ah for mowing, look at the BOTKK 3.5Ah instead. The 12-month warranty is standard, but no mention of a refund window beyond 30 days.
- Actual capacity: 2.0Ah (160Wh)
- Compatible with Greenworks 80V tools and GCH8040, 2936802, 2958602AZ chargers
- LED power indicator on the battery
- 1200+ charge cycles claimed
- Weight: roughly 2.5 lbs
Best for: Light users with a small lawn who already own an 80V mower and need a low-cost spare battery for occasional trimming.
UPLUS U1 360CCA Battery
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The second UPLUS battery is the higher-cranking version: 12V 26Ah with 360 cold cranking amps. It’s the same size as the 280CCA model but packs more punch. If your riding mower has a larger engine or extra accessories, this one ensures reliable starts even in deep cold. The AGM construction is identical—99.99% pure primary lead, sealed, maintenance-free.
Where this battery shines is in tractors that sit for weeks between uses. The calcium-calcium technology reduces self-discharge, so it won’t drain flat over winter. The vibration resistance is solid for rough terrain. UPLUS offers the same 15-month warranty and 60-day refund window, backed by a US-based warehouse in California. That local support means faster replacement if something goes wrong.
The downside: it’s the priciest of the two UPLUS batteries. For most residential riding mowers, 280 CCA is sufficient. The extra 80 CCA and 3Ah capacity are only necessary if you frequently mow in temperatures below 0°F or run high-draw accessories. Also, like all lead-acid batteries, it’s heavy—around 14 pounds—and needs secure mounting to prevent vibration damage.
- Voltage: 12V, Capacity: 26Ah, CCA: 360
- Same dimensions as Group U1: 7.68 x 4.92 x 6.93 inches
- Pure primary lead, no recycled content
- Low self-discharge, vibration resistant
- 15-month warranty with 60-day refund
Best for: Riding mower owners in cold climates or those with high-compression engines that need extra cranking power.
How We Chose These Products
I started with the most common 80V lawn mower systems on the market—Greenworks leads that category. I included the complete mower kit because it’s the fastest way to switch from gas. Then I added replacement batteries from two third-party brands (BOTKK and Wangdinglei) because many readers already own Greenworks tools and just need extra packs. Finally, I included starting batteries for riding mowers because they solve a different problem: dead batteries on cold mornings.
For each product I looked at three things: does it deliver what it promises (runtime, cranking power, compatibility), does it have safety certifications and a reasonable warranty, and does the price match the performance. I left out products with no certification marks or suspiciously low prices. The two UPLUS batteries earned a spot because of their pure-lead construction and strong local support.
Buying Guide: What Really Matters
Start with your mower type. If you own a cordless push mower (or want to buy one), you need an 80V battery pack. Check the voltage and capacity. A 4.0Ah pack will cut about half an acre. A 2.0Ah pack will get you maybe 20 minutes. Don’t buy a 2.0Ah if your lawn is measured in acres—you’ll be frustrated.
For riding mowers, you need a 12V starting battery. The specs that matter are cold cranking amps (CCA) and group size (U1 is standard for most garden tractors). More CCA helps in cold weather. AGM batteries are better than flooded lead-acid because they don’t spill and last longer. Check your mower’s manual for the correct group size before buying.
Third-party batteries can save money, but verify compatibility with your specific model. Look for certifications like UL or CE. And always check the warranty length—12 months is standard for replacements, 15 months for the UPLUS. A 30-day refund window is common, but longer is better.
Our Top Recommendation
The Greenworks 80V 21in Push Mower is the smartest buy if you’re starting from scratch. You get a reliable mower that handles a typical suburban lawn, plus a 4.0Ah battery and charger. It’s quiet, starts instantly, and stores compactly. For the price of a mid-range gas mower, you get zero emissions and no pull cords.
If you already own Greenworks tools and need extra runtime, grab the BOTKK 3.5Ah two-pack. It balances cost and capacity well. For riding mower owners, go with the UPLUS U1 360CCA battery. The extra cranking power is cheap insurance against a dead battery on a cold morning. The 280CCA version is fine for milder climates, but the 360CCA costs little more and gives peace of mind.
Frequently Asked Questions
Can I use a third-party battery in my Greenworks mower without voiding the warranty?
The mower warranty covers defects in the mower itself. Using a non-OEM battery won’t void the mower warranty, but if the battery damages the mower, Greenworks may deny a claim. Stick to reputable brands like BOTKK or Wangdinglei that have safety certifications.
How long do 80V lithium batteries last before they need replacing?
Typical lithium-ion packs last 500 to 800 full charge cycles. That’s 3 to 5 years for most homeowners. High-density cells like those in the Wangdinglei claim 1200 cycles, but real-world results vary with storage temperature and discharge depth.
My riding mower battery dies every winter. Will an AGM battery fix that?
AGM batteries have lower self-discharge than flooded batteries, so they’re better at holding a charge over months of storage. Still, disconnect the battery or use a trickle charger in winter. The UPLUS with calcium-calcium technology helps, but no battery lasts forever if left completely discharged.
Why are some 80V batteries labeled ‘for Greenworks’ while others say ‘replacement for’?
Batteries labeled ‘for Greenworks’ are often third-party packs designed to fit Greenworks tools. ‘Replacement for’ is similar. Neither is made by Greenworks. Always check the specific model numbers (GBA80200, etc.) in the product description to ensure a physical fit and electrical compatibility.