Yale Keypad Lock Battery Replacement – Which Batteries Are Best?

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There are mixed opinions about which batteries are best for Yale keypad lock battery replacement. Read on to find out what the manufacturer recommends.

I’ve been selling locks for several years and have always recommended rechargeable batteries to my clients. Everyone says they are best no matter where you use them. Are these best for Yale keypad locks?

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yale battery

Yale keypad locks are powered using four 1.5V AA alkaline batteries with an operating voltage of 4.5V to 6V. These generally last between 8 and 12 months depending on frequency of use. This estimation is based on an assumption that the door is used about 10 times every day. When the door is used more frequently than this, then batteries will not last as long.

Yale recommends that users stick to authentic alkaline batteries and stay away from rechargeable batteries.

Why Alkaline Batteries?

These are the main reasons why alkaline batteriesare best for your Yale keypad lock replacement

 Longevity: Alkaline batteries have a longer shelf life than other types of batteries. They can last up to seven years unused and lose only five percent of their energy every year they are left unused. Even whenthey are placed in a device, they don’t lose much power when the device is not in use.

Low Temperature Functioning: Alkaline batteries continue to function normally even in very low temperatures. This makes them suitable for use even during the winter.

Leakage: Although alkaline batteries have been known to leak, they are far less susceptible to leakage than other batteries. Leakage from batteries when left in devices for long can cause corrosion of circuits.

Safety: Alkaline batteries have less negative impact on the environment compared to lead-based and acid-based batteriesThey do not requirespecial disposal methodsbecause the compound contained in them does not pose any serious health risks.

The downside to alkaline batteries is that they are not as cost effective as rechargeables because they have to be disposed of once they are drained. Alkaline batteries are also considered environmentally unfriendly.

 Low Battery Alert

When batteries are running low, you will see a red, battery shaped light at the top right hand corner of the keypad. Some Yale locks have an audible voice which gives a verbal warning. You should have enough time to change the batteries before they are totally drained. There is no way of telling exactly how long you have before they are drained, though most users say it takes a couple of days. Besides frequency of use, battery life will also vary depending on atmospheric temperatures, humidity and quality of the batteries.

Howto Replace Keypad Lock Batteries

Battery replacement can be done quite quickly. You will need aPhilips size screw driverand four AA alkaline batteries.

  • Use the screwdriver to remove the screw on top of the interior part of the lock
  • Pull the cover off and set it aside. The four batteries will now be exposed
  • Pull out the old batteries.
  • Place in the new batteries making sure the positive and negative terminals of each battery is correctly placed
  • You will hear a beep which confirms that the batteries are properly placed
  • Slide the lock cover back into place and put the screws back on

Emergency Battery Power for Discharged Batteries

If the batteries in your Yale keypad lock get completely drained with the door locked, you will find yourself locked out. This is common where keypad locks are used to secure country homes or storage areas which are rarely visited. The lock can be powered using a 9V battery. Here is how to use an emergency power battery.

  • Place the 9V battery on the emergency power supply terminal which is on the lower part of the lock
  • Touch the keypad with the palm or back of your hand to activate the lock
  • Enter your PIN code then press the asterisk key to unlock the door.

When the door is unlocked, change the batteries immediately.

 Final Words

Yale keypad lock battery replacement is a quick and easy process. When replacing batteries, be sure to use high quality, alkaline batteries. This will ensure the lock operates at its best and lasts as long as it should. Yale warns that use of incorrect types of batteries could cause explosion of the lock. In other instances wrong types of batteries make the lock’s system give a low battery alert even when the batteries are not yet drained.


My Yale keypad lock batteries are draining really fast. They run from 100% to 45% in three weeks. The advertised lock said one year.

The bolt and strike may be misaligned. If so, the motor uses extra energy to move the bolt which makes the batteries drain out a lot faster.

The loud audible voice which tells me to change batteries keeps sounding every time the lock operates. Is there any way I can silence this voice alert so I can operate the lock in silence. I intend to change the batteries tomorrow.

The only way to silence it is to change the batteries.

What’s in a 9V battery that makes it best for emergency powering?

It has more power than the standard AA battery. AA batteries have 1.5V each.  The 9V battery’s power is equivalent to 6 AA batteries in one. Literally, it is made up of 6 AAAA batteries bound together.

I have replaced the batteries but the keypad won’t come on

You probably have the positive and negative terminals of the batteries improperly placed.