This battery looks identical to my Swift 40v battery. Do you know if they are compatible?

I'm afraid it is NOT compatible. Each OEM tends to make a form-factor unique to it's range of tools (no surprise there!!)

Does this fit the Qualcast lawnmower?

Only green. Works appliances of the same voltage and ah

How long to charge at first?

Hi Gary, not too long. About 1 - 2 hours. When you're mowing/strimming etc., and you exhaust the battery, it will be quite warm and won't charge until it has cooled down (generally after about 30 mins). Hope this helps

When battery is fitted to charger both lights immediately go out, with no battery in place charger power light stays on what needs replacing ?

Under normal conditions, a flashing LED indicates that the battery is faulty - remove for 1 minute, unplug the charger and retry. If LED still flashes, replace the battery. If both lights go out, the battery is less than 10% charged - leave it in the charger and check the progress by pressing the BCI button. If the BCI remains unlit, then replace the battery.

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24V Battery. Original Greenworks 24V Power Supply 2Ah Powerful Lithium-Ion Battery. Lightweight Design with 3-Stage Charge Level Control. 2 Year Warranty G24B2

Product ID: 199814375

Details

Battery capacity
2 amp_hours
Battery cell composition
Lithium Ion
Brand
Greenworks
Number of batteries
1 Lithium Ion
Recommended uses for product
Power Tool

⚡24V Lithium Power

🔋2Ah Long-lasting Capacity

⏱️30-60 min Fast Recharge

¥16874

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Description

🔋 Power your productivity with Greenworks’ lightweight, fast-charging 24V battery—never get caught powerless again!

NEXT GEN LITHIUM POWER - Precision-engineered 24V 2Ah battery delivers unmatched performance and lifespan.
PEACE OF MIND WARRANTY - Backed by a 2-year warranty from Greenworks, the global leader in battery tech.
SMART 3 STAGE CHARGE CONTROL - Intuitive battery level display and rapid recharge keep you in control and on schedule.
ALWAYS READY ALWAYS RELIABLE - Holds charge even when idle, so your tools fire up instantly when you need them.
UNIVERSAL GREENWORKS COMPATIBILITY - Seamlessly powers your entire 24V Greenworks tool collection—cut clutter, save space.

The Greenworks 24V 2Ah Lithium-Ion Battery offers robust, long-lasting power compatible with all Greenworks 24V tools. Featuring a lightweight design, smart 3-stage charge level control, and a rapid 30-60 minute recharge time, it ensures your tools are always ready. Supported by a 2-year warranty, this battery combines advanced technology with reliable performance for professional-grade efficiency.

Specifications

ASIN	B083F5BW1N
Amperage	2 Amps
Antenna Location	Power Tool
Battery Capacity	2 amp_hours
Battery Cell Type	Lithium Ion
Battery Weight	0.45 Kilograms
Best Sellers Rank	48,401 in DIY & Tools ( See Top 100 in DIY & Tools ) 206 in Cordless Tool Battery Packs
Brand Name	Greenworks
Compatible Phone Models	Not for mobiles
Customer Reviews	4.5 4.5 out of 5 stars (852)
Included Components	1x 24V 2Ah GEN2 Battery, 1 manual
Item Dimensions	13.2 x 7.8 x 5 centimetres
Item Type Name	Battery
Item Weight	0.45 Kilograms
Manufacturer	Greenworks
Model Name	G24B2
Model Number	01-000002926707
Number of Batteries	1 Lithium Ion batteries required. (included)
Product Warranty	Three years product warranty, two years battery warranty.
Reusability	Rechargeable
Unit Count	1.0 count
Voltage	24 Volts

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¥16874

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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The product quality is outstanding. Exactly what I needed for my work.

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