Makita 18V LXT 4.0Ah Battery (BL1840B) is a battery from Makita 18V LXT. It is labelled 18 V and holds 4 Ah. Lowest in-stock price on file: $149.00 at Tool Nut (checked Oct 11, 2026).
| Category | Batteries |
|---|---|
| Model number | BL1840Bmakitatools.com (archived) |
| Voltage on the label ? | 18 Vmakitatools.com (archived) |
| Capacity | 4 Ahmakitatools.com (archived) |
| Energy ? | — |
| Weight ? | — |
| Warranty | — |
| Sold as | Single product |
| Availability | Sold by several retailers |
Where to buy
Each price shows the date it was seen. A date more than a month old means the store could not be re-read, so the price may have moved.
Price history
Price tracking for this product began October 11, 2026. Prices are re-checked every week, and the chart fills in from the next check.
Every recorded price change (1)
A row is recorded only when a store's price or stock changes; each line then runs to the date the store was last checked. Amazon prices aren't shown (store policy).
Batteries from other platforms
Only Makita 18V LXT batteries. We have no source saying another platform's pack runs Makita 18V LXT tools, or that Makita 18V LXT packs run anything else. Brands shape their battery rails so a competitor's pack won't fit.
Which batteries work with Makita 18V LXT · Every battery fit across platforms
Where this came from
confirmed The part number and every spec shown were read from the brand's or a store's own material: a product page, a spec sheet or a product feed, or an archived copy of one. Last verified 2026-09-19. What the labels mean.
The same tool on other platforms
Same category, different brand. Open any of them side by side with this battery, or tick several to compare up to four.
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