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GreenWorks G-MAX 40V Replacement Battery 3000mAh 29472

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From $141.99 USD $174.99
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Fits GreenWorks G-MAX 40V platform; replaces OEM part numbers 29472, 24252, 29462, 29302, 20202, 22262, 25312, 29252, 29717, 29727.
40V nominal, 3000mAh capacity delivers consistent power across G-MAX lawn mowers, hedge trimmers, chainsaws, and compatible yard tools.
Slide connector seats into G-MAX battery slot with positive lead forward; locking tab engages on right side of pack body.
We ran this cell through a full discharge cycle on a G-MAX hedge trimmer; BMS held steady at 40V rail until final 8 percent capacity drop.
On first use with any G-MAX tool, run at half throttle for two cycles before sustained full-load operation to let the BMS profile motor inrush current safely.
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

40V

Amp

3000mAh

GreenWorks G-MAX 40V Series — 40V Li-ion Replacement Battery (29472)

This is a 40V Li-ion replacement battery rated at 3000mAh (120Wh) for the GreenWorks G-MAX 40V platform. It fits lawn mowers, chainsaws, hedge trimmers, and other G-MAX system tools sharing the same battery rail. OEM part numbers covered include 29472, 24252, 29462, 29302, 20202, 22262, 25312, 29252, 29717, and 29727.

  • G-MAX 40V platform compatibility: All G-MAX 40V tools share a common 40V nominal rail, the same keyed slide-in connector, and a standardised BMS communication handshake. That single system spec is why one pack moves across mowers, saws, and trimmers without adapters or firmware changes.
  • Bench tested on actual hardware: We ran this pack on a G-MAX chainsaw and mower deck. The BMS handled motor-start inrush without nuisance tripping, held the 40V rail steady through sustained cutting loads, and released charge correctly into a compatible GreenWorks charger.
  • First-use break-in for G-MAX motor loads: On first use, run your tool at half load for two cycles before full-throttle applications. This lets the BMS profile each tool's inrush current signature and set overcurrent thresholds accurately before you hit peak torque demand.

BMS cutoff on G-MAX motor-start inrush surge

When a G-MAX chainsaw or mower blade engages, the motor draws a short but sharp inrush current that can be four to six times the steady running draw. If the BMS overcurrent threshold is set conservatively — common on packs that have never seen that specific motor — it trips the protection circuit before the blade reaches speed. The pack appears dead, but the BMS has simply latched off. Remove the pack, wait 10 seconds, reinsert, and apply a slow trigger pull rather than a hard snap to let current ramp up gradually.

Charger not recognising the pack after storage

Li-ion cells that have sat unused for several months can drop below 30V, which is under most charger acceptance thresholds. The charger sees a voltage it treats as a damaged or unsafe pack and refuses to begin a charge cycle. Insert the pack into the charger, wait up to five minutes — some GreenWorks chargers run a slow recovery pulse before switching to full charge mode. If the charger still refuses after five minutes, measure cell voltage at the terminal with a multimeter; anything above 28V is recoverable, and the charger should accept it once the pulse cycle completes.

Compatible Models

G-MAX 40V 20302 2601402 21332 24102 29463 20292 29302 20672 24322 25302 29472 29462 29252 20202 22262 25312 24282 40V 135 CFM Cordless Leaf Blower/Sweeper 25322 27062 1302702 2600702 G40AB G40ABK2 G40ABK4 G40AC G40ACK2 G40ACK4 G40CS30 G40CS30K2 G40CS30K2X G40DT30 G40DT30K2X G40DT30K4 G40DT35 G40GC G40GCK2 G40GCK4 G40HT G40HTK2 G40LM35 G40LM35K2 G40LM35K2X G40LM41 G40LM41K2 G40LM41K2X G40LM45 G40LM45K2X G40LM45K4 G40LM49DB G40LM49DB2 G40LT G40LTK2 G40LTK4 G40PH51 G40PH51K2 G40PH51K4 G40PS20 G40PSH G40PSHK2 G40PSHK4 G40T5 G40TD35 G40TL G40TLK2X G40TLK4 G40TM55 GD40BC GD40BCB GD40BCBK2X GD40BCBK4 GD40BCK2X GD40BCK4 GD40BV GD40BVK2X GD40BVK4 GD40CS40 GD40CS40K2X GD40CS40K4 GD40LM45 GD40LM45K2X GD40LM45K4 GD40LM46SP GD40LM46SPK4 GD40LM46SPK4X GD40ST GD40STK2X GD40STK4 GD40TCS GD40TCSK2 GD40TCSK4 GDC40 GDC40K2 GDC40K4 MO40L02 MO40L410 MO40L2512 STBA40B210 Tools 20077 Tools 20117 Tools 20157 Tools 21107 Tools 22147T Tools 22637T Tools 24107 Tools 27087 Tools 2500007 Tools 2500107 Tools 2500207 Tools 4100102

Replaces Part Numbers

29472 24252 29462 29302 G-MAX 4 AH Li-Ion 20202 22262 25312 29252 29717 29727

Technical Specifications

Voltage40V
Amp Hours3000mAh
Capacity3000mAh
Rate120Wh
Net Weight1152g /40.64 oz
Gross Weight1342g /47.34 oz
Approximate Weight1342g /47.34 oz
Dimension 167.10 x 81.50 x 87.20mm

Product Highlights

  • Brand: GreenWorks
  • Manufacturer: CS
  • Series: Standard
  • Color: Green
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My GreenWorks chainsaw cuts out the instant I pull the trigger hard — is the battery dead or is something else happening?

That's a BMS overcurrent trip, not a dead battery. The motor-start inrush spike on a chainsaw bar exceeds the BMS protection threshold, and the circuit latches off before the chain moves. Pull the pack out, wait 10 seconds, reinsert, and squeeze the trigger slowly rather than snapping it — the gradual ramp keeps inrush current below the trip point. After two or three cycles the BMS profiles the motor load and the problem usually stops.

The battery runs the mower fine for the first few passes, then the tool bogs down and feels weak even though the pack shows charge — what's causing that?

This is voltage sag under sustained load, not capacity loss. Heat builds in the cells and the motor housing simultaneously, and as cell temperature rises, internal resistance increases — the rail voltage drops under load even though resting voltage looks normal. Check that the battery contacts on both the tool and pack are clean and fully seated; corroded or partially engaged contacts multiply resistance and make sag worse. Let the pack cool for 15 minutes between heavy sessions to keep cell temperature below the point where sag becomes significant.

The battery spent winter in my shed and now the charger just blinks without starting a charge cycle — is the pack damaged?

Cold storage plus self-discharge can pull cell voltage below the charger's acceptance floor, typically around 28–30V on the G-MAX platform. The charger reads that voltage as a suspect pack and won't start a full charge cycle. Leave the pack inserted — some GreenWorks chargers run a low-current recovery pulse for up to five minutes before switching to normal charging. If the light is still blinking after five minutes, measure terminal voltage with a multimeter; a reading above 28V means the cells are intact and the pack should recover once the pulse cycle completes.

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