Poulan Pro 501099501 40V Replacement Battery 2000mAh
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Poulan Pro 501099501 40V Replacement Battery 2000mAh - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
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
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
⚠️ 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.
Poulan Pro 501099501 40V Replacement Battery 2000mAh - is backordered and will ship as soon as it is back in stock.
Voltage
40V
Amp
2000mAh
Poulan Pro 967044601 Series — 40V Li-ion Replacement Battery (501099501)
This 40V 2000mAh (80Wh) lithium-ion battery replaces part number 501099501 on the Poulan Pro 967044601 platform. It fits the 967044601 40V 24" cordless lawn mower and the 967044601 40V Dual Steel Hedge Trimmer 24". Voltage, connector, and BMS communication match the original pack specification.
- 967044601 platform compatibility: Both the 24" lawn mower and the dual steel hedge trimmer run off the same 40V rail with the same pack housing and connector pinout. The BMS handshake protocol is identical across both tools, so one pack serves either application without modification.
- Bench tested on actual hardware: We ran this pack through full charge-discharge cycles on a 40V load bench, monitoring BMS cutoff thresholds and cell voltage balance across the stack. Cell delta stayed within spec at end-of-discharge, and the protection circuit responded correctly to simulated overcurrent events.
- Motor inrush on first cycles: On first use, run the mower or trimmer at partial throttle for two cycles before sustained full-load passes. This lets the BMS log the motor's inrush current signature and calibrate its overcurrent threshold before you push the deck through heavy grass.
BMS overcurrent trip on mower blade engagement
When the 967044601 mower deck engages, the brushless motor draws a sharp inrush spike that can exceed the BMS overcurrent threshold on a cold or freshly installed pack. The BMS interprets that spike as a fault and disconnects the output rail before the blade reaches operating speed. A new pack from storage is more susceptible because the cells have not yet been profiled under this tool's load curve. Running two partial-load cycles first lets the BMS set a threshold that accommodates the deck motor's actual start current without false-tripping.
Charger shows blinking red and won't accept the pack
A 40V pack stored for several months can drop below the charger's acceptance voltage — typically around 30V for a 10-cell series stack. The charger detects the low rail and refuses to enter normal charge mode, showing a blinking red fault light instead. Most Poulan Pro 40V chargers include a recovery or trickle mode: remove the pack, wait 60 seconds, then reinsert it firmly to trigger the recovery handshake. If the charger accepts the pack and moves to solid red, the cells are recovering; if the fault blinks persist after two attempts, check that pack terminal voltage reads at least 28V with a multimeter before trying again.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Poulan Pro
- Manufacturer: CS
- Series: Standard
- Color: Green/Black
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My Poulan Pro 967044601 mower cuts out the instant I engage the deck — is the battery tripping?
Yes — that's a BMS overcurrent trip caused by the blade motor's inrush current spike at the moment of engagement. On a new or recently stored pack, the BMS hasn't profiled the deck motor's start current and cuts the output rail as a fault response. Run the mower at partial throttle through two full cycles to let the BMS calibrate its overcurrent threshold to this tool's actual load curve. After that, full-load engagement should hold without tripping.
The mower feels weak and bogs down halfway through a pass even with a fully charged battery — what's causing that?
That's voltage sag — under sustained cutting load, internal cell resistance causes the pack's output voltage to drop, and the tool's motor controller reduces power when the rail falls below its operating threshold. Check that the pack terminals are clean and seating fully in the tool's battery slot, since increased contact resistance amplifies the sag effect. If the contacts are clean and the symptom persists, the cells may have capacity-faded from repeated shallow cycling where the pack was only partially discharged before recharging. Run the pack through two full discharge-recharge cycles to let the BMS recalibrate its state-of-charge map.
The hedge trimmer runs noticeably slower in cold weather even with a full charge — is something wrong?
Nothing is wrong — lithium-ion internal resistance rises sharply below 5°C, which reduces the current the cells can deliver and causes the motor to run at lower torque and speed. Bring the pack indoors and let it reach room temperature for at least 30 minutes before use; a cell at 20°C delivers meaningfully more current than the same cell at 2°C. Do not attempt to warm the pack artificially with external heat sources. Once the pack is at room temperature, check that the charge indicator shows full before starting the trimmer.
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