Definition
A rechargeable battery inside or beside the opener that keeps the door working when the power goes out — typically good for a couple dozen cycles. In the Four-State Area, the storms most likely to knock out power are the same ones you least want to be wrestling a heavy door under by hand. Backup batteries are standard on many newer openers (and required by law in some states), but they wear out: plan on replacing the battery every three to five years so it works the one night you need it.
Why this term matters for homeowners
Opener terminology typically points to drive type, horsepower, battery backup, and how smart access like myQ changes daily convenience and security.
- Use this term to ask better follow-up questions during estimates.
- Look for this language in Learn and Evaluate guides to connect definition to decisions.
- Confirm how this applies to your specific door size, age, and daily use.
Related pages
Category: Openers & Smart Access