If you enjoyed my
review of the Accutire MS-4021b tire pressure gauge, you may also be interested in how to change the battery. Changing the batteries inside an Accutire MS-4021b tire pressure gauge is easy. You'll need:
A Phillips screwdriver (I used a PH1 sized bit and it worked fine).
3 new LR44 batteries to replace the old ones inside your gauge. These batteries are also called A76, 357, or AG13 and are 1.5 volts each, making for 4.5 volts of total power.
Flip the gauge over and unscrew the battery compartment cover. It will drop out when you turn the unit upside down. Then hit the handle against the palm of your hand until the batteries pop out. It took quite a bit of force to knock them loose. I was surprised at how securely they are held in place.
Here you can see the original batteries that came with my device, no-name "button cell" batteries marked LR44. Also note that the battery compartment is completely enclosed in plastic. As cheap as this device is, it seems like there actually was some engineering that went into it. There is no possible way those batteries are getting knocked loosed even if you drop it, and it keeps dirt out of the inside of the gauge. There are even little symbols molded into the compartment showing you which way to turn the new batteries so the polarity is correct, another nice touch I was not expecting.
Just line up your three new LR44 batteries like the inside of the compartment shows and squeeze them into the metal battery holders. Then screw the battery compartment cover back on. Piece of cake!
thank you so much for giving us a chance to have this opportunity..
ReplyDeletesee here
Me too. Thank you!
ReplyDeleteSame here. The flipped side of mine is solid rubber like the front side.
ReplyDeleteI must have the older model, too. I was able to roll the rubber part down along the handle -- don't want to say what it might remind you of -- far enough to expose two slots with spring loaded wedge-shaped pieces of metal. I expect that by squeezing these together, one might be able to separate the handle from the head. So far i have been unable to do so. Any hints or strategies welcome.
ReplyDeleteI also have the older model. Was able to roll the rubber grip down to expose the tabs which I was able to squeeze together and pull the handle from the head. Then had to unscrew the nozzle from the head in order to pry the two sides apart. That's where I found the battery. I needed a tiny phillips screwdriver to access the battery by removing 3 tiny screws.
ReplyDeleteThe older model uses a #2032 watch battery . I was able to pull the two parts apart with some pliers by squeezing in on the tabs . There were like seven small phillips screws that secured the battery protective cover in place . Just remove those and that exposes the battery .
ReplyDeletePic of the older model that uses a 2032 battery-
ReplyDeletehttps://johnsmiscstuff.blogspot.com/2019/12/accutire-ms-4021b-battery-replacement.html
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ReplyDeleteHelpful. Hard to see the markings inside. I think the 3 batter
ReplyDeleteies were stacked with the imprinted side facing "up" towards the "top" of the gauge and the printout one would read.
I have the Radio Shack Cat # 63-1113. Replaced the battery with a 2032 battery and yes, I made sure the polarity is correct(retired electrician). Have good display but only get a reading of 01.0 lbs. Am I missing something here????
ReplyDeleteI got same reading … we’re you able to figure it out?
DeleteMe too - I think that what I have read elsewhere confirms that once the battery dies so does the factory calibration, so it becomes useless. At least it was fun to take apart and enjoy the thrill of hoping a new battery would fix it.
DeleteIt would have helped to say which side the positive side goes in
ReplyDeletePositive side it towards the top of the gauge
ReplyDeletewhat is the "top" of the gauge? the digital read-out side or the other side?
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