SigmasTek Chamberlain 41A6357-1 Compatible Battery, 12V 5Ah F1

Fits perfectly into my Chamberlin Garage Door Unit. It’s working perfectly!

Exact replacement for the original battery.Quick delivery! Well packaged! Works perfect!

Came sooner than i expected. Battery fit and is currently at home in my garage door opener.

I didn't even know that my garage door opener by LiftMaster had an internal battery! All of a sudden it didn't work. Consulting the LIFTMASTER User's Guide I discovered that an internal battery exists and periodically needs replacement.Sure enough, Amazon had the replacement for my device. It was so easy to remove the old battery, unclip the terminals, lift out the old battery, reclip the wires to the new battery terminals and tighten the screw that holds the panel in place. VOILA!! Done for at least another 5 years thanks to Amazon! Quick, easy, anyone can do it. The big thing you have to be sure of is that you have the replacement battery. Amazon will help you with that by matching up your garage door opening device. Additionally, this replacement battery has a 1 year guarantee from the manufacturer. I like that!I give this product a full FIVE STARS for my review!!

Took a little extra time to arrive, compared to other offerings, but was a perfect fit. The whole replacement process took less than five minutes. This was my 2nd replacement - the last one lasted about 18 months.

Very happy with this battery. Far cheaper than oem replacement. Works great. Takes a full 48 hours to charge.

Replaced 18 month ago still going strong

12 V battery, delivered on time, at first a bit concerned I thought was the wrong battery, the original has one plug bigger than the other one, the replacement are the same but after check the manual all was good and install super easy takes a few minutes.