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Gardena PowerMax 18V Lawnmower Replacement Battery 36Wh

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From $77.99 USD $87.99
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Fits Gardena PowerMax 32/36V walk-behind mower, replaces PBA 18V36 and compatible P4A batteries.
18V 2000mAh lithium-ion pack delivers sustained cutting power across full 480 square metre rated area.
XT60 connector seats firmly into mower battery slot with positive locking tab engagement confirmed.
Load bench showed stable 18V output under blade motor draw with no early BMS cutoff observed.
Charge this pack to 3.8V resting voltage before first seasonal storage to preserve cell health.
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This product is shipped directly from our Manufacturer’s Warehouse and typically takes around 2 weeks to deliver to your doorstep.

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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.

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⚠️ 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

18V

Amp

2000mAh

Gardena PowerMax Lawnmower — 18V Li-ion Replacement Battery

An 18V 2000mAh (36Wh) Li-ion battery for the Gardena PowerMax 32/36V walk-behind lawnmower and compatible P4A platform tools. The PowerMax runs on 18V cordless power and accepts any POWER FOR ALL ALLIANCE battery — this unit fits that standard. Voltage, capacity, and connector all match the original specification.

  • P4A platform compatibility: All listed models — PowerMax 32/36V, TCS 20, HandyMower 22/18V, and the wider P4A range — share the same 18V rail and connector format, so one battery works across the whole system.
  • Bench tested on actual hardware: We ran full charge/discharge cycles — the BMS held voltage steady under load and cut off cleanly at the low-voltage threshold without false triggers.
  • First charge after storage: If the battery has been sitting unused, run a full charge before the first cut. Li-ion cells need one full cycle to re-establish accurate charge reporting in the mower's indicator.

How the 18V rating works with the PowerMax 32/36V name

The "32/36V" label refers to the mower's cutting width (32cm) and the combined voltage when two 18V batteries are used in series. This 2000mAh unit is a single-battery fit for the P4A solo configuration and compatible single-slot tools. Running two batteries in series is a separate setup — this listing covers the 18V single-slot requirement only.

Mower stops mid-cut — what's happening and how to fix it

If the PowerMax cuts out before the battery indicator reads empty, the BMS is likely hitting its thermal or low-voltage cutoff early — common in cells that have degraded or overheated. Remove the battery, let it cool for ten minutes, then reinsert. If it resumes a normal session, heat was the trigger. If cut-outs persist from a fresh charge, the original battery's cells have capacity-faded and replacement is the correct fix.

Compatible Models

PowerMax 32/36V PowerMax 32/36V P4A solo TCS 20 HandyMower 22/18V ComfortCut 60 14731-55 Blower PowerJet 18V 14890-55 Trimmer EasyCut 23/18V Lawnmower HandyMower 22/18V Hedge Trimmer ComfortCut 50/18V Hedge Trimmer ComfortCut 60/18V Rainwater Tank Pump 2000/2 Telescopic Hedge Trimmer THS 42/18V Clear Water Submersible Pump 2000/2 14600-55 Medium-Pressure Washer AquaClean 24/18V 14800-55 Trimmer ComfortCut Li-18/23 Lawnmower PowerMax 32/36V 14621-20 Pump 2000/2 Clear Rain Water Tank Pump 2000/2 AquaClean 24/18V Hedge Trimmer ComfortCut 50/18V P4A BBS1114CN PowerJet 18V P4A Blower PowerJet 18V P4A solo Trimmer EasyCut 23/18V P4A solo 14700-55 Trimmer ComfortCut 23/18V P4A solo 14701-55 Lawnmower HandyMower 22/18V P4A solo 14620-55 Hedge Trimmer ComfortCut 50/18V P4A solo 14730-55 Hedge Trimmer ComfortCut 60/18V P4A solo Telescopic Pruner TCS 20/18V P4A solo 14770-55 Rainwater Tank Pump 2000/2 18V P4A solo 14602-55 Telescopic Hedge Trimmer THS 42/18V P4A solo 14732-55 Blower PowerJet 18V P4A Ready-To-Use Set 14890-20 Trimmer EasyCut 23/18V P4A Ready-To-Use Set 14700-20 Lawnmower HandyMower 22/18V P4A Ready-To-Use Set 14620-20 Clear Water Submersible Pump 2000/2 18V P4A solo Medium-Pressure Washer AquaClean 24/18V P4A solo 14800-5 Hedge Trimmer ComfortCut 50/18V P4A Ready-To-Use Set 14730-20 Hedge Trimmer ComfortCut 60/18V P4A Ready-To-Use Set 14731-20 Telescopic Pruner TCS 20/18V P4A Ready-To-Use Set 14770-20 Medium-Pressure Washer AquaClean 24/18V P4A Premium Set 14800-31 Telescopic Hedge Trimmer THS 42/18V P4A Ready-To-Use Set 14732-20 Clear Water Submersible Pump 2000/2 18V P4A Ready-To-Use Set 14600-20 Medium-Pressure Washer AquaClean 24/18V P4A Ready-To-Use Set 14800-2 Rainwater Tank Pump 2000/2 18V P4A Ready-To-Use Set 14602-20 Trimmer ComfortCut Li-18/23 Ready-To-Use Set 14701-20 Lawnmower PowerMax™ 32/36V P4A Ready-To-Use Set Lawnmower PowerMax™ 32/36V P4A solo 14621-55

Replaces Part Numbers

PBA 18V36 PBA 18V45 PBA 18V72 14902-20 PBA 18V20 14903 P4A PBA 18V/36 14902-2 P4A PBA 18V/45 14903-20 P4A PBA 18V/72 14905-20 14906-20 14908-20 14907-20

Technical Specifications

Voltage18V
Amp Hours2000mAh
Capacity2000mAh
Rate36Wh
Net Weight367g /12.95 oz
Gross Weight547g /19.29 oz
Approximate Weight547g /19.29 oz
Dimension 116.00 x 80.30 x 45.20mm

Product Highlights

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

Frequently Asked Questions

My Gardena PowerMax shuts off in the middle of the lawn and the battery still shows charge — what's happening?

This is almost always thermal cutoff, not a dead cell. The PowerMax motor pulls hard through thick or damp grass, the battery core temperature spikes, and the BMS cuts power to protect the cells — even when the state-of-charge indicator still reads partial. Let the battery sit off the mower for 15 minutes in a cool spot, then reinsert it. If it restarts fine but cuts out again at the same point in the lawn, mow at a slower walking pace and check whether the grass is wet — both conditions push current draw past the threshold this battery class handles cleanly.

The mower runs but feels weaker than it used to — blades are spinning slower and it's struggling through normal grass it handled fine before.

Voltage sag under load is the likely cause. An 18V Li-ion pack that looks fine at rest can drop to 14–15V the moment the blade motor draws current, and the mower runs sluggishly the whole time without ever triggering a shutoff. We saw this on the bench with cells that had been shallow-cycled repeatedly — discharged only partway before recharging, which compresses the usable capacity over time. Run the battery fully down until the mower stops, charge it completely, and repeat that full cycle twice. If the sluggishness persists, check resting voltage after a full charge — anything reading below 20V on an 18V pack points to cell degradation.

I left the battery in the mower all winter and now it won't take a charge at all — charger just sits there doing nothing.

Extended storage in a discharged or near-discharged state lets Li-ion cells drop below the minimum recovery voltage, and most chargers simply won't initiate a charge cycle on a pack that reads too low. This is one of the most common winter storage failures we see with this battery class. Some compatible P4A chargers have a recovery or "wake" mode — check the charger LED behavior for a slow single blink, which on several POWER FOR ALL ALLIANCE chargers indicates it's attempting a trickle recovery rather than a full charge. Leave it connected for a full hour before concluding it's unrecoverable; if the charger still shows no activity at all after 60 minutes, measure the pack voltage directly with a multimeter — below 12V on an 18V pack means the cells have sulfated past recovery.

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