Somfy Gate Battery Lifespan: What You Need to Know

Whether it serves as back-up during a power cut or as the main supply on a solar kit, the battery of a Somfy motorisation is a wear part. Anticipating its replacement avoids a gate stuck at the worst moment.

What lifespan for which use?

• Back-up battery (9.6 or 24 V): 3 to 5 years on average; it ages even unused, as it sits on permanent trickle charge
• Solar pack: 4 to 6 years for the battery, depending on the panel's sun exposure and daily cycles
• Back-up autonomy: expect around ten cycles during a power cut, fewer in very cold weather

Signs of a battery at the end of its life

• The gate visibly slows near the end of travel or in cold weather
• Autonomy collapses: barely two or three cycles after a cut
• The control unit's LED signals a charging fault
• The battery swells or heats up: replace it immediately

Extending its life

1. Clean the solar panel twice a year and check it faces due south
2. Avoid deep discharges: after a long power cut, let the battery recharge fully
3. In freezing weather, limit unnecessary cycles: cold temporarily reduces capacity
4. Always replace with an identical or manufacturer-approved reference

Our technicians test charge levels, replace batteries and repair Somfy motorisations throughout Île-de-France, with a free quote before any work.