Bosch Indego 350 18V Replacement Battery F016104898

Bosch Indego 350 / 400 Series — 18V Li-ion Replacement Battery (F016104898)

This 18V 1500mAh Li-ion battery replaces the original pack in the Bosch Indego 350, Indego 400, Indego S+ 350, and Indego S+ 400 robotic lawn mowers, along with eleven additional Indego variants. It slots into the same battery bay and communicates with the mower's BMS over the same data line as the factory cell. Voltage and capacity match OEM spec — 18V, 27Wh.

• Indego 350 and 400 platform fit: All listed Indego models share the same 18V battery architecture, connector pinout, and BMS handshake protocol — so one pack covers the full range without adapter changes or firmware conflicts.
• Bench tested on actual hardware: We ran this pack through charge, discharge, and blade-motor inrush cycles on the Indego platform. The BMS held cell balance across all cycles and the protection circuit responded correctly to simulated overload conditions.
• Cold-weather start 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 on a cold pack can trip the BMS before the mower completes its first row.

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

The Indego's blade motor draws significantly more current through dense or wet grass than during normal cutting. If the pack is already warm from a previous run, the BMS can read combined thermal and current stress as an overload and cut power to protect the cells. This is not a fault in the battery — it is the protection circuit doing its job. Let the mower and battery rest for five minutes in a shaded spot before resuming the session.

Charger refusing to accept the pack after winter storage

Li-ion cells left in the mower through winter can self-discharge below the charger's minimum acceptance voltage — typically around 12V for an 18V pack. When this happens, the Bosch charger shows a fault light and stops the charge cycle immediately. The fix is a brief recovery charge using a compatible Li-ion charger that includes a pre-charge or "wake-up" mode to bring each cell back above the acceptance threshold. Once the pack reaches approximately 14–15V, the standard charger will accept it and complete a normal charge.