40V 5.0 Ah High Power Battery vs Battery for power tools extra digital 40V 4.0Ah Li-ion
Buy the Greenworks 5.0 Ah if you want maximum runtime and a full 3-year warranty from a mainstream seller. Buy the 4.0 Ah G-MAX pack if budget is the priority: it costs about $120 less. As of November 4, 2026, the 5.0 Ah is $176.99 at Walmart and the 4.0 Ah is $56.98 at eBay.
Today the Battery for power tools extra digital 40V 4.0Ah Li-ion costs $120.01 less at its best price.
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40V 5.0 Ah High Power Battery
4.2Choose the Greenworks 5.0 Ah if you run high-draw tools like chainsaws or blowers for long stretches and want a 3-year warranty and on-board fuel gauge.
- 180Wh gives roughly 25% more runtime than the 4.0 Ah pack
- Charges in about an hour with a rapid charger
- Full BMS protection and a 3-year warranty
- Fits 75+ Greenworks 40V tools
What separates them
| 40V 5.0 Ah High Power Battery | Battery for power tools extra digital 40V 4.0Ah Li-ion | |
|---|---|---|
| Capacity | 5.0 Ah, 180Wh | 4.0 Ah, 144Wh |
| Price (Nov 4, 2026) | $176.99 at Walmart | $56.98 at eBay |
| Charge time | About 1 hour with rapid charger | About 120 minutes |
| Weight | 2.86 lbs (3.97 lbs packaged) | 3.09 lbs |
| Fuel gauge | On-board LED indicator | 4-LED gauge plus diagnostic LEDs |
| Protection | BMS with overheat, short circuit, over-voltage, over-current and overcharge protection | Overdischarge and overcharge protection |
| Warranty | 3-year battery warranty | Not stated |
Price history
- 40V 5.0 Ah High Power Battery: lowest $176.99 on Nov 4 at Walmart.
- Battery for power tools extra digital 40V 4.0Ah Li-ion: lowest $56.98 on Nov 4 at eBay.
Prices at every store
40V 5.0 Ah High Power Battery
- WalmartNew
In stockSold by Greenworks Tools
$176.99Free shippingObserved at 12:11 AM - Greenworks ToolsNew
In stockReturn policy
$179.99Observed at 12:11 AM - Martexplore.comNew
In stock
$224.99Free shippingObserved at 12:11 AM - AmazonNew
Availability unknown
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$176.99Free shippingObserved at 12:11 AM
Also available at
- GreenworksCheck price at Greenworks
Specs compared
| Spec | 40V 5.0 Ah High Power Battery | Battery for power tools extra digital 40V 4.0Ah Li-ion |
|---|---|---|
| Battery Type | Lithium-ion | Lithium-Ion |
| Weight | 2.86 lbs | 3.09 LB |
| Voltage | 40V | — |
| Capacity | 5Ah | — |
| Power | 180Wh MAX | — |
| Indicator | On-Board LED | — |
| Product Weight | 3.97 Lbs | — |
| Package Dimensions | 14.96" x 8.86" x 12.4" | — |
| Charge Time | 1 hour with rapid charger | — |
| Dimensions | 6.66" L × 3.31" W × 3.51" H | — |
What reviewers say
40V 5.0 Ah High Power Battery
Owners rate it 4.2 out of 5 across 316 ratings, generally happy with runtime and the fuel gauge. Complaints center on price and on packs that lose capacity or fail early.
- Long runtime on mowers and trimmers
- Fuel gauge is accurate and handy
- Fits the full 40V lineup without adapters
- Holds charge well between uses
- Expensive for a single battery
- Some packs fail or lose capacity within a season or two
- Heavy in handheld tools
- Warranty claims can be slow
Battery for power tools extra digital 40V 4.0Ah Li-ion
Buyers of this listing mostly report the battery arrives as described, fits their Greenworks 40V tools, and costs less than expected. Complaints center on shipping speed and packing, with a few batteries arriving scratched or loosely boxed.
Questions and answers
- Which battery lasts longer per charge?
- The 5.0 Ah, by about 25%. It stores 180Wh versus 144Wh, so a chainsaw or blower runs noticeably longer on it.
- Is the 5.0 Ah worth the extra money?
- Only if you use high-draw tools often. At $176.99 versus $56.98, you pay about $120 more for 25% more runtime, a faster charge and a 3-year warranty.
- Do both fit the same tools?
- Yes. Both are Greenworks 40V packs and fit the same 75+ tool lineup, including the 29472, 29462 and 20202 models.
- How long does each take to charge?
- The 5.0 Ah takes about 1 hour on a rapid charger. The 4.0 Ah takes about 120 minutes. Both need a 40V charger, which is often sold separately.
- Which is better as a backup pack?
- The 4.0 Ah. At $56.98 it is a cheap spare for light trimming, and its 4-LED gauge makes charge checks easy.
- Which has better protection and support?
- The 5.0 Ah. It has a full BMS covering overheat, short circuit, over-voltage, over-current and overcharge, plus a 3-year warranty. The 4.0 Ah lists only overcharge and overdischarge protection.