Greenworks 40V 4.0Ah Lithium-Ion High-Power Battery
We are not ready to call this price.
We check at least every 12 hours and hold a day-by-day record of what this cost — 3 days of it so far. Calling a price high or low needs 7 of those days and at least one change, because a range needs two prices: this one has not moved since we started watching. If it is still $127.99 on October 18, this box will say so — a price that has held for 10 days is an answer too.
One 4.0 Ah battery: $32.00 per amp-hour at today’s $127.99. Every platform, per amp-hour
Tell me when it drops
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Price history
Tracking since October 8, 2026 · 3 of 7 days to a verdict
The price has not changed since we started watching, so there is no line to draw yet. A chart appears the first time it moves.
Sales events
Next on the calendar: Black Friday, November 27. We keep checking this price through it and report here what it did.
Where to buy
- Held for
- 2d
- Checked
- 2h ago
Prices checked at least every 12 hours. “Held for” is how long that retailer has been charging this price. A hidden price is one we cannot re-confirm recently enough to publish.
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What it is
7 attributes, in the retailer’s own words. We record the prices; these we only pass on.
- Size
- 40V 4.0Ah HP Battery
- Color
- Black
- Weight
- 2.63 pounds
- Dimensions
- 6.38 × 3.2 × 3.16 inches
- Model
- LB40HP040
- Released
- June 2023
- Warranty
- 3 year warranty
Cheaper in Tool batteries, and what changes
Things we track on the same shelf for at least 10% less than $127.99, with the attributes the retailers describe differently. Their words, not our judgement — we record prices, we do not test products.
DEWALT20V MAX* XR Battery, 4.0-Ah, 2-Pack (DCB204-2), Black$106.56 at Amazon $21.43 lessSize: 9.20in. x 7.00in. x 3.55in. instead of 40V 4.0Ah HP BatteryWeight: 2.9 pounds instead of 2.63 pounds
CRAFTSMANV20 Lithium Ion Battery, 4.0-Amp Hour (CMCB204)$84.99 at Amazon $43.00 lessSize: 4 amps instead of 40V 4.0Ah HP BatteryWeight: 0.9 pounds instead of 2.63 pounds
MakitaBL1820B-2 18V Compact Lithium-Ion 2.0Ah Battery Twin Pack$96.00 at Amazon $31.99 lessSize: 2.0Ah instead of 40V 4.0Ah HP BatteryWeight: 1.85 pounds instead of 2.63 pounds
Others we track in Tool batteries
See all Tool batteries prices
DEWALT20V MAX XR POWERPACK 8.0 Ah Power Tool Battery (DCB2108)$127.331 retailer · 2 recorded prices
DEWALTFLEXVOLT 20V/60V MAX Lithium Ion Battery, 6.0-Ah (DCB606)$130.671 retailer · 3 recorded prices
RYOBIONEAND 18V 8.0 AH Lithium-ION HIGH Performance Battery$120.15 · low $104.971 retailer · 4 recorded prices
DEWALT12V MAX* Batteries, 3.0-Ah, 2-Pack (DCB124-2)$118.48 · low $118.391 retailer · 3 recorded prices
Milwaukee48-11-1850R M18 18V 5Ah XC Extended Capacity Resistant Battery 2 Pack, (48-11-1850Rx2)$145.00 · low $138.821 retailer · 4 recorded prices
RYOBI18-Volt ONE+ Lithium-Ion 4.0 Ah High Capacity Battery (2-Pack)$112.001 retailer · 1 recorded price
$127.99
at Amazon · we earn a commission