Husqvarna PR140Li 58V Replacement Battery 5000mAh

Husqvarna PR140Li / PR280Li — 58V Li-ion Replacement Battery (590 92 38-01)

This is a 58V 5000mAh (290Wh) lithium-ion replacement battery for Husqvarna cordless lawn mowers and outdoor power equipment, including models compatible with the PR140Li and PR280Li battery references. It fits the same connector and voltage rail as the OEM pack. Drop this in where the original battery has lost capacity or stopped charging.

• PR140Li and PR280Li platform: Both references share the same 58V architecture, connector pinout, and BMS handshake protocol. One replacement pack covers the full range — no adapter or firmware change needed.
• Bench tested on actual hardware: We ran this pack through repeated blade-load cycles simulating thick-grass cutting passes. The BMS held steady under motor inrush spikes and engaged thermal protection correctly when internal temps rose — no false trips on normal load.
• Seasonal storage tip: Before putting the mower away for winter, charge this pack to around 50–60% — not full. A fully charged Li-ion cell stored for months accelerates capacity loss. Check voltage in spring before first use; anything below 48V may need a slow recovery charge before the charger accepts the pack.

BMS cutoff under thick-grass or wet-grass blade load

When the blade hits dense or wet grass, the motor draws a sharp inrush of current — sometimes 3–4× the steady-state draw. If the battery's BMS reads that spike as an overcurrent event, it cuts power to protect the cells. This is normal protective behaviour, not a fault with the pack. Slow your mowing pace in heavy conditions to reduce inrush frequency. If cutoffs continue, check that the blade is sharp — a dull blade forces the motor to work significantly harder and pushes draw higher.

Charger showing a fault light after the mower sat all winter

Li-ion packs self-discharge at roughly 2–3% per month in storage. After six months in a cold garage, cell voltage can drop below the charger's acceptance threshold — typically around 42–45V on a 58V pack — causing the charger to flash a fault indicator instead of starting a charge cycle. Some Husqvarna chargers have a recovery mode: connect the pack, wait 60–90 seconds, and the charger may step in with a low-current trickle to bring cell voltage back into the acceptance window. If the fault light persists after two minutes, disconnect, wait 10 minutes, and reconnect to retry.