Is this a genuine Makita battery?

Yes. The BL1820B is Makita's own 18V LXT pack, not a third-party clone. The 197254-9 part number refers to the version with the charge indicator.

Will it fit my Makita 18V tool?

It fits tools in Makita's 18V LXT range, which covers most current 18V drills, drivers, saws and grinders. It does not fit 12V CXT or 40V XGT tools.

How long does a 2.0 Ah pack last?

Expect decent runtime in drills and drivers but short runs in saws, grinders and other high-draw tools. For those, a 4.0 or 5.0 Ah pack is the better pick.

Is it worth it over a 4.0 Ah battery?

If you want a light spare for drilling and driving, yes. If you need runtime in heavy tools, the larger pack costs more but delivers roughly double the capacity.

Does it work with Makita's fast charger?

Yes. It charges on Makita's LXT chargers, including the rapid chargers, and has low self-discharge for storage.

Where is the Makita 18V Genuine 2.0 Ah Lithium Battery cheapest?

At Amazon, for $47.95, 54% under what the other stores charge, as of our latest check.

Where can I buy the Makita 18V Genuine 2.0 Ah Lithium Battery?

9 stores we checked sell it, including eibabo.us, Wurth NSI, Auto Tool World, The Home Depot, Amazon.

Makita 18V Genuine 2.0 Ah Lithium Battery

Best price now

$47.95at AmazonObserved at 7:13 AM

54% under what the other stores charge

Compared across 8 stores. Prices are checked against each store and labelled with when.

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Our take on the Makita 18V Genuine 2.0 Ah Lithium Battery

The Makita BL1820B is a genuine 18V LXT lithium-ion battery with 2.0 Ah capacity and a 4-stage charge indicator. It weighs about 380 g, so it keeps drills and drivers light for overhead and repetitive work. At $47.95 at Amazon as of November 7, 2026, it sits at the low end of the pack, with 8 stores pricing it new.