Wiper Gioia XP 25.9V Replacement Battery 110Z03700A

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

This is a 25.9V, 10200mAh Li-ion battery built to replace part number 110Z03700A in Wiper cordless mowers. It fits the Gioia XP, One Xh, Runner A1, Runner X, and more than 21 additional Wiper mower models. The voltage and connector match the original, so the mower's charger and BMS handshake with it directly.

• Multi-model Wiper platform fit: The Gioia XP, One Xh, and Runner A1/X all share the same 25.9V battery rail and BMS communication protocol. One part number covers the range because the voltage, physical form factor, and cell configuration are identical across these models.
• Bench tested on actual hardware: We cycled this pack through blade-motor inrush loads and confirmed the BMS holds steady under the high-current draw of a cold start. Cell balance and discharge curves matched OEM spec across five full cycles.
• Seasonal storage tip: Before first use of the season, bring the battery indoors overnight if temperatures are below 10°C. Cold Li-ion cells have higher internal resistance, and the blade motor's inrush current can trip the BMS on a cold pack before it even begins cutting.

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

The 110Z03700A battery's BMS monitors current draw in real time. In thick or wet grass, the blade motor pulls significantly more current than on a dry, short lawn — sometimes exceeding the BMS overcurrent threshold in under a second. When that happens, the pack cuts power to protect the cells. Slowing your mowing pace in dense sections reduces peak draw and keeps the BMS from tripping. If cutoff happens repeatedly in the same patch, the grass load is the cause, not the battery.

Charger won't accept the pack after winter storage

Li-ion cells self-discharge slowly over months. A pack stored all winter in an unheated garage can drop below the charger's minimum acceptance voltage — typically around 20V for a 25.9V pack. Most Wiper chargers will display a fault light and refuse to begin a charge cycle at that point. To recover the pack, check the terminal voltage with a multimeter. If it reads above 18V, the cells are likely recoverable — place the battery in a warm room for a few hours and retry the charger, as some units will re-initiate once the pack warms above 15°C.