Stiga Autoclip 140 Replacement Battery 25.9V 10200mAh

Stiga Autoclip 140 Series — 25.9V Li-ion Replacement Battery (101-806)

This is a 25.9V, 10200mAh lithium-ion replacement battery for the Stiga Autoclip robotic mower range. It fits the Autoclip 140, 140 4WD, 145, and 500 series, among others. The battery slides into the mower's dock bay and communicates with the onboard BMS via the same multi-pin connector as the original pack.

• Autoclip series compatibility: These models share a common 25.9V battery architecture, the same dock-connector pinout, and compatible BMS handshake protocols — which is why a single pack covers the full Autoclip range listed above.
• Bench tested on actual hardware: We ran this pack through simulated blade-motor inrush cycles and monitored BMS response at full load. The protection circuit handled repeated high-draw events without nuisance tripping under normal operating conditions.
• Seasonal storage tip: Before the first mow of the season, bring the battery indoors overnight if temperatures are below 10°C. Cold Li-ion cells carry higher internal resistance, and the blade motor's inrush current can trip the BMS on a cold pack before the cells have had a chance to warm up.

Charger showing a fault light after the mower sat unused all winter

Li-ion cells self-discharge slowly during storage. After several months in a cold garage, a pack can drop below the charger's acceptance voltage threshold — typically around 20V for a 25.9V nominal pack. When that happens, the charger's protection circuit reads the pack as faulty and refuses to begin a charge cycle. Some Stiga chargers include a recovery or wake-up mode; hold the charge button for five seconds to initiate it. If the charger has no recovery mode, a brief trickle from a compatible bench supply up to 22V will bring the cells back into the acceptance window so the standard charge cycle can begin.

Mower cuts out mid-row then restarts after a short pause

This is thermal protection, not a faulty battery. When the blade motor works hard through thick or wet grass, current draw spikes and the pack temperature rises. Once the BMS temperature sensor hits its cutoff threshold, it interrupts output to protect the cells. The mower recovers because the pack cools within a few minutes and the BMS resets automatically. Allow a five-minute cooldown on the dock before resuming, and consider scheduling mowing cycles during dry conditions when blade resistance is lower.