Digital locks primarily use 4 to 8 AA alkaline or lithium batteries. For best performance in high-drain smart locks, 1.5V AA Lithium batteries (like EBL or Energizer Max) are recommended for their longer lifespan and better performance in cold temperatures, preventing premature low-battery warnings.
Recommended Battery Type for Digital Locks
We recommend using alkaline batteries & Lithium batteries, as they are reliable and widely used in many household devices. Among the various alkaline options available, our top recommendation is Energizer Max.
While various smart locks require a wide range of battery types — from lithium-ion batteries to 9Vs to C batteries to AAAs or AAs — the battery installation process is typically quite simple.
Keypad door locks typically take AA or AAA alkaline batteries, while some models use a 9-volt (9V) battery. In most cases, a set of 4 AA or AAA batteries is required.
The recommended batteries to use in your door lock are AA alkaline, non-rechargeable batteries.
Most Yale smart locks (including the Assure, Nest × Yale, and Approach series) require four standard AA alkaline batteries.
Is the lock close to the panel or hub? If the device is paired correctly, the battery drain may be due to too much distance between the lock and the panel or hub. If you have more than 20 feet between the device and the panel or hub, a repeater is required to strengthen the signal.
When a digital lock's battery dies, the lock's electronic functions—such as keypads, biometrics, and smartphone apps—stop responding. However, the locking mechanism remains securely engaged. You will not lose your access codes, and your door or safe will never suddenly unlock on its own.
Most modern remotes use AAA batteries. However, some older models or larger universal remotes use AA batteries.
Yes, you can often use a CR2032 instead of a CR2025 in a key fob, but it depends on how tight the battery compartment is. Both share the exact same 3V voltage and 20mm diameter, but the CR2032 is slightly thicker (3.2 mm vs. 2.5 mm) and has a larger capacity.
Changing the batteries on a digital door lock is a quick DIY process. The battery compartment is usually located on the interior side of the door. Follow these general steps:
The recommended batteries to use in your Door Lock are AA alkaline, non-rechargeable batteries. Make sure there are no lithium NiCad batteries in use. If you're replacing the battery because of a low battery warning, press and hold the Program button for five seconds, then press and hold button A for five seconds.
Schlage locks typically use either 4 AA alkaline batteries or 1 9-Volt alkaline battery. Schlage highly recommends using high-quality alkaline batteries rather than lithium or rechargeable batteries for optimal performance and battery life.
Electronic locks should be replaced regularly to reduce the chances of a lockout and quality batteries should always be used! Duracell and Energizer are recommended by this lock's manufacturer.
Neither is universally "better"; Lithium is ideal for high-drain, high-performance electronics, while NiMH (Nickel-Metal Hydride) is better for everyday, low-drain devices and budget-friendly uses.
Your Schlage lock battery is likely dying fast due to a misaligned door frame, a weak Wi-Fi connection, or the use of the wrong battery type. These issues force the lock’s motor to overwork or its wireless radios to continuously search for a signal, draining power within weeks.
No, you cannot directly use AA batteries in a device designed for AAA batteries.
An AA battery is significantly larger than its smaller sibling, the AAA battery.
AA batteries last longer than AAA batteries. Because of their larger size, AA cells hold significantly more active material, resulting in a capacity of 1,400 to 3,000 mAh compared to the 600 to 1,200 mAh found in AAA cells.
The absolute best batteries for most digital and smart door locks are premium AA or AAA alkaline batteries (such as Duracell Coppertop or Energizer MAX) or CR2032 lithium coin cells for keyless entry fobs. Avoid rechargeable, lithium-ion, or heavy-duty batteries, as they can cause voltage drops or damage lock circuit boards.
Typical Lifespan And What Affects It
A fresh set of quality alkaline batteries typically lasts six to twelve months in a residential deadbolt that sees a few cycles per day. High-traffic households, short auto-lock timers, frequent remote operations, and heavy use of backlighting shorten that interval.
A lithium battery can sit unused for about 6 to 12 months before it risks permanent damage or severe capacity loss. Because these batteries naturally self-discharge, leaving them completely drained for long periods can cause the internal voltage to drop to an unsafe level, effectively "bricking" the battery.
The typical lifespan of a digital or smart door lock is 5 to 8 years. While the heavy-duty mechanical parts can often last 10+ years, the electronic components, biometric sensors, and software capabilities generally dictate the lock's overall effective life.
If your Yale lock runs out of battery, the door will remain locked and secure. You won't be locked out; you can temporarily jump-start the lock using a standard 9-volt (9V) battery to enter your code.
Yale smart locks typically last 6 to 9 months on a single set of 4 AA batteries. Actual battery life largely depends on your lock model, daily usage (how often the motorized deadbolt operates), and the type of network module you are using.