For Makita 18V li-on battery: BL1815, BL1815B, BL1820, BL1820B, BL1830, BL1830B, BL1840, BL1840B, BL1850, BL1850B, BL1860, BL1860B, BL1845, BL1890, BL1890B. It's compact enough for easy storage, and the hidden handheld design makes it more portable and won't take up too much of your place when using it.
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