Wiper Gioia XP 25.9V Replacement Battery 7800mAh

Wiper Gioia XP / Runner Series — 25.9V Li-ion Replacement Battery (110Z03700A)

This 25.9V, 7800mAh Li-ion battery replaces OEM part 110Z03700A in Wiper cordless lawn mowers. It fits the Gioia XP, One Xh, Runner A1, Runner X, and 21 additional models that share the same voltage rail and connector format. Voltage and capacity match the original pack exactly.

• Gioia XP and Runner platform compatibility: These models share the same 25.9V (7S Li-ion) architecture, connector pinout, and BMS handshake protocol. Swapping packs across the range works because the charge management logic is identical across the platform.
• Bench tested on actual hardware: We cycled this pack through repeated high-draw discharge events simulating blade motor inrush. The BMS held stable under load and recovered cleanly after each thermal event without requiring a manual reset.
• Seasonal storage tip: Before the first cut 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 on startup can trip the BMS on a pack that hasn't warmed to room temperature.

BMS cutoff on thick-grass and wet-grass blade load

The blade motor draws significantly more current through dense or wet grass than through dry, short turf. If that inrush current exceeds the BMS protection threshold — even briefly — the pack shuts off to prevent cell damage. This is not a battery fault; it is the protection circuit doing exactly what it should. Slow your cutting pace through thick sections and let the mower drive the blade at steady load rather than forcing it through in a single pass.

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

Li-ion cells self-discharge slowly over months. A pack left uncharged from autumn through spring can drop below the charger's minimum acceptance voltage — typically around 20V on a 25.9V system — causing the charger to flag a fault rather than begin a charge cycle. Some Wiper chargers include a recovery or "wake" mode; press and hold the charge button for five seconds to initiate it. If the charger has no recovery mode, connect it briefly, disconnect, and reconnect — this can prompt the charger to retry the acceptance check once cell voltage has slightly recovered from surface charge.