That dreaded “low battery” beep at 2 a.m. is the #1 call we get from Houston homeowners — especially after a long power outage like the ones we’ve had the last few years.
I’m Mike, and I’ve been the lead technician at PHT Security Systems (your local ADT Authorized Dealer on Cullen Blvd) for over a decade. I’ve replaced hundreds of ADT batteries in homes from Pearland to Katy to The Woodlands, and I’m here to save you the headache.
Let’s walk through everything you need to know about your ADT security system battery — from what kind it uses to how to stop that annoying beeping fast.
Why Your ADT Battery Matters More in Houston
Houston’s humidity, frequent storms, and rolling blackouts mean your system relies on its backup battery more than most places. After Hurricane Beryl in 2024, we replaced batteries in over 300 homes in a single month because prolonged outages drained them completely.
A fresh battery keeps your alarm monitoring active, cameras recording, and smart locks working — even when CenterPoint isn’t.
Common ADT System Batteries (2025 Models)
| ADT Panel Model | Battery Type | Typical Part # | Expected Life | Where It’s Located |
| ADT Command (Touchscreen) | Rechargeable Lithium-Ion | 300-10186 | 4–6 years | Inside the main touchscreen panel |
| ADT Impassa / DSC | 7.2V NiMH Pack | 6PH-H-4/3A3600 | 3–5 years | Inside control panel box |
| Older Safewatch / QuickConnect | 12V Sealed Lead Acid | Various 4–7Ah | 3–5 years | Metal cabinet in closet/garage |
| Door/Window Sensors | CR123A or CR2 Lithium | N/A | 3–7 years | Inside each sensor |
| Motion / Glass Break | CR123A Lithium | N/A | 4–6 years | Inside detector |
The most common one we replace in 2025 is the Command panel battery (part 300-10186, 3.7V lithium-ion, around 7800–10000mAh upgraded versions available).
How to Stop Your ADT System from Beeping (Low Battery Alert)
That chirp every 45 seconds? Here’s the quick fix:
- On your keypad, enter your code + OFF (or # if that doesn’t work) — this silences it temporarily
- Acknowledge the trouble by pressing the “trouble” or “*” button until it clears
- The beep will come back in 24–48 hours until the battery is replaced
Pro tip: Put your system on test mode first at myADT.com so you don’t trigger a false alarm dispatch.
Can You Replace Your ADT Battery Yourself?
Yes — and it’s easier than you think for most panels.
For the ADT Command touchscreen (most popular in Houston right now):
- Power down the panel (Tools → Advanced → System Shutdown)
- Unscrew the back cover
- Unplug the old battery connector
- Plug in the new one (exact match 300-10186)
- Screw it back and power up
Takes 10 minutes. We’ve had hundreds of customers do it successfully.
For older panels in the closet, it’s usually a simple 12V battery swap like changing a car battery.
We always recommend testing the system afterward → You Might Need Alarm Monitoring Checked
Does ADT Provide Free Batteries?
If you have the Quality Service Plan (QSP), you get one free system battery per year when ordered through myADT.com.
Without QSP, batteries run $30–$80 depending on the model.
As your local dealer, we often beat that price and can install it same-day if you’re in the Houston metro.
What Happens If Your ADT Battery Dies Completely?
- The panel loses backup power
- During an outage, monitoring stops (no signals reach the central station)
- Sensors may go offline
- You’ll get constant trouble alerts
In short: your system becomes a very expensive paperweight until power returns.
Wireless Sensors and Cameras – Battery Tips
Many Houston clients pair their ADT system with wireless cameras. Battery life varies wildly by brand → Top Wireless Camera Brands
For crystal-clear footage that lasts longer on battery → Understanding 4K Security Cameras
And the age-old debate → Wireless Security Cameras vs Wired
We also see common mistakes that kill battery life fast → Common Camera Setup Mistakes
Or Are 4K Security Cameras Really Better?
Even Wireless Home Security Camera Options
Upgrading Your Entire System?
If your panel is over 8 years old, a low battery is often the first sign it’s time for an upgrade → Upgrade Your Home Security System
Fire Alarm Batteries Too
Don’t forget — your smoke/CO detectors tied to ADT also have batteries → What Is a Monitored Fire Alarm?
And for commercial → When Is Fire Alarm Monitoring Required?
Or go fully wireless for fire → Wireless Fire Alarm Monitoring
Hard Water Affecting Your System?
Weird one, but Houston’s hard water can corrode battery terminals over time, especially in garages → Common Hard Water Problems for League City
Or Pasadena homes → Why Your Pasadena Home Needs a Water Softener
Different Monitoring Paths
Your battery keeps the panel alive so signals can transmit → Types of Alarm Monitoring Systems
Ready for a Battery Check or Full Service in Houston?
Don’t wait for the next beep (or the next storm).
We’ll come out free of charge, test your battery, replace it if needed, and make sure everything is 100 %.
→ Schedule your free battery & system check today: Certified Alarms & Surveillance Services
FAQ – ADT Security System Batteries Houston
Can I replace my ADT battery myself?
Yes — most panel batteries are user-replaceable in 10–15 minutes. We’re happy to walk you through it over the phone, too.
What kind of battery does the ADT system use?
The current Command touchscreen uses a 3.7V lithium-ion pack (part 300-10186). Older panels use 12V sealed lead-acid or 7.2V NiMH.
How do I stop my ADT battery from beeping?
Enter your code + OFF to silence temporarily. The permanent fix is replacing the low battery.
Does ADT provide free batteries?
With the Quality Service Plan, yes — one free system battery per year. We can help you check your plan.
What happens if an ADT battery dies?
Your system loses backup power and stops transmitting signals during outages — leaving you unprotected until power returns.
Where can I get my ADT battery replaced in Houston?
Right here — local same-day service across the metro. Just give us a call.
