Is the Greenworks 24V 4.0Ah battery worth it?

It is a reasonable buy at $50 if you already own Greenworks 24V tools and want more runtime plus USB charging. If you need maximum runtime for big tools, a higher-capacity pack makes more sense.

Which tools does this battery fit?

It fits Greenworks 24V tools, including their 24V trimmers, blowers, chainsaws and drills. It does not fit 40V, 60V or 80V Greenworks tools.

Can it charge my phone?

Yes. The built-in USB port works as a power bank, though output is modest and better suited to topping up a phone than fast charging.

Does it come with a charger?

No. This is the battery only, so you need a Greenworks 24V charger, which most owners already have from a kit.

How does it compare to the 2.0Ah pack?

It has twice the capacity, so roughly double the runtime, at about twice the weight. It is the better pick for longer jobs.

The best new price was $50 at eBay as of November 4, 2026. Battery prices often drop during spring yard-care sales and holiday promotions.

Where is the Greenworks 24V 4.0Ah USB Battery BB240CA cheapest?

At Amazon, for $79.99, as of our latest check.

Where can I buy the Greenworks 24V 4.0Ah USB Battery BB240CA?

2 stores we checked sell it, including Amazon, eBay.

Greenworks 24V 4.0Ah USB Battery BB240CA

Best price now

$79.99at AmazonObserved at 12:12 AM

Prices are checked against each store and labelled with when.

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Our take on the Greenworks 24V 4.0Ah USB Battery BB240CA

The Greenworks BB240CA is a 24V, 4.0Ah lithium-ion pack for Greenworks 24V tools, with a built-in USB port so it doubles as a power bank for phones and small devices. It weighs about 1.5 lb and measures roughly 5 x 3 x 3.2 inches. The best new price is $50 at eBay as of November 4, 2026, with two stores listing it new.

Best forOwners of Greenworks 24V tools who want a spare or larger packCharging a phone or small device on the job