CHAMBERLAIN/ LiftMaster / Craftsman 4228 Replacement Battery for Battery Backup Equipped Garage Door Openers (Packaging May Vary) Medium

Our garage door opener is a liftmaster security 2.0. The replacement battery cost $120 so I did not buy it. If the power to the house goes out, I pull the handle on the opener, release the metal bar and open or close the door by hand (some doors are too heavy to do that with, so the backup battery can be helpful). Then I bought this generic brand for $25. I was concerned it would not be compatible but it's the exact same battery (same size, voltage etc.), just without the liftmaster name. I unplugged the door opener from the ceiling and hit the open button and the battery worked fine. Hopefully it lasts a long time.

fit exactly the way the old one was. I heard the system reboot instantly. recommended from my experience

Labeled Chamberlain, appears to be an exact replacement, and so far, works just fine. TBH, I didn't realize that my garage door opener would beep when the battery needs replacement (where is that noise coming from?). A very easy replacement, just one screw. The battery I removed was labeled 2016 so I can't complain about battery life.

Great quality! Good battery life. Excellent value for money.

This works in my Chamberlain opener, but it is certainly a tight fit in the compartment when it's time to get it out! Another reviewer said he made a tab with duct tape and used that to remove the old battery. I found that very helpful as I struggled to remove the dead battery. I finally stuck an old thin plastic kitchen spatula like one might use on cookie sheets to raise and slide out my old battery. This is my second purchase of this replacement battery.The batteries don't last very long with the hot Texas summers heating up the garage pretty badly. I think I'm replacing batteries at just under the 2 year mark which seems a bit often to have a battery totally die even considering conditions. If a car or motorcycle battery can last so much longer, it seems like these should have a longer operational life. The unit's annoying beeping does stop simply from removing the old battery, so if one only has power failures seasonally it might be a savings on replacements to remove it to inside the house during months of high heat. I plan to try that with this replacement battery by taking it into my utility room before the highest summer heat to see if it lasts longer than the previous 2 batteries.It is during our thunderstorm season that having this back battery has been a lifesaver. Literally my first morning in my new house I woke up to a raging storm that knocked out the power before I could get dressed for work. My old opener that came with the house didn't have a battery back up, and it is near impossible to reach the release handle when the car is parked directly underneath the opener! One of my first home improvements was to get a new Chamberlain garage door opener system with battery back up installed!This replacement battery has always been charged and working when my power has gone out. The door opens more slowly when drawing on battery power, but it goes up nonetheless. I've never had the power stay off long enough to get near the maximum number of times it is supposed to raise and lower the door to see how long a fully charged battery will last.

I purchased this same item in August 2015 and just now the beeping started so time to replace it. That's 10 years of life so I believe the product was worth the buy.

Exactly what we needed. Arrived in perfect condition and ready to install. Very fast shipping and as advertised.

battery was a perfect replacement.