Batteries for the 892LT and 894LT remote should be replaced. By pushing up on the cover just above the remote control buttons, the cover will pop up. Ensure that the old battery is properly disposed of.

Silky Terrier Dog Breed Playing Aro... Silky Terrier Dog Breed Playing Around

Replace the cover with a new one. Pry open the case with the visor clip, starting in the center and working your way out on either side.

The Liftmaster 371LM seems to be a garage system that is controlled by a single button on a remote. The garage door system itself will not need batteries; however, the remote control does. 

Batteries for 375LM remote controls should be replaced. By pushing down hard on the cover, it will slide down just below the remote control buttons. Only a 3V CR2032 coin cell battery should be used to replace the original battery. Replace the cover with a new one.

To remove your battery cover, put a flathead screwdriver into the oval cutout and push the screwdriver against the battery cover until the lid comes off. Remove the battery cover by sliding it down and out of the way. 

Take the two screws that are located on the rear of the remote control’s housing. Take a look at the case. Remove the existing battery from the system.

To minimize the likelihood of a fire, explosion, or chemical burn, use the following measures.

To avoid the possibility of Intense Injury and Death, Neither ever allow young children to be in the vicinity of batteries.

To minimize the likelihood of a fire, explosion, or chemical burn, use the following measures:

ONLY 3V CR2032 coin batteries should be used instead of the originals.

ONLY 3V CR2016, as well as 3V CR2450 coin battery, should be used as replacements.

Charge up, dismantle, fire over 212°F (100°C), or incinerate are all banned.