Key Fob & Remote Battery Replacements in NH & ME

Dead remote? Weak signal? A&B Lock replaces fob and smart key batteries fast—wherever you are.

Restore Your Remote’s Reliability

A weak or dead key fob battery can leave you locked out or unable to start your vehicle. A&B Lock and Security offers quick, mobile battery replacements for most types of car remotes, smart keys, and proximity fobs.


Whether you’re stuck in a parking lot or just want peace of mind before your battery fails, our technicians will test, replace, and confirm your fob’s functionality on the spot.

“They came out, swapped the battery in my fob, and had me back in business in minutes. Super convenient and friendly!” — Ember Smith

Signs Your Fob Battery May Be Failing

  • Reduced range or intermittent signal
  • Fob works only after multiple presses
  • Vehicle doesn’t recognize proximity key
  • Warning light appears on dashboard
  • Total failure to unlock or start

What We Replace

  • Keyless entry fob batteries
  • Smart key batteries (push-to-start systems)
  • Remote start system remotes
  • Aftermarket alarm remotes and keypads

We use high-quality batteries and test every fob before and after installation.

Testimonial:

“A&B saved us on a cold morning when our push-start key wouldn’t work. Battery replaced in no time. Great service!” — Hannah Stabler

Mobile Battery Replacement Service

Don’t drive around with a dying fob. Call A&B Lock at (603) 527-0192 or submit a quick service request. We serve all of New Hampshire and Southern Maine with fast, professional fob and remote battery replacement.

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