Kitchen Mama can opener battery swap, anything tricky to know?

May 5, 2026
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Saw someone asking about this in another thread so thought it was worth its own discussion since there's so much talk about the Kitchen Mamas openers but hardly anyone talk about the battery side of things.
The process is honestly the simplest there is. You pop off the battery cover and insert 4 AA batteries (paying close attention to the + and; markings) then pop the battery cover back on. There are no screws to worry about and no special battery pack for the Kitchen Mama line of can openers. Just 4 AAs.
Now I'm curious to know if the Kitchen Mama can openers is particular about the kind of batteries that are used in them. For instance, are they picky about whether alkaline batteries are used vs. Rechargeable batteries (which hold around 1.2 volts)? I would think the motor itself would not mind, but I know from other appliances that use geared motors that the voltage from NiMH batteries may cause those motors to struggle to start or to maintain their rate of rotation. Similarly, I would think that the battery contact points on these openers would corrode from the dampness in the kitchen environment. Yet another reason these might fail before the motor does. Have any of you opened one up enough to see how the battery contacts are made on these Kitchen Mama can openers?


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ngl I didnt even know these were a thing until my mom got one. She runs duracells in hers and complained it was slow until I swapped them for fresh batteries.
 
opened mine when the lid sensor got flaky. The contact strips are just simple steel strips that appear to be nickel plated looking so corrosion would likely be at the negative end of the batteries where they make contact with the strips.
 
Ran mine on Amazon Basics AAs for over a year now. I feel like people overcomplicate everything with batteries. The motor only draw an amp or two so it cant be a big deal if the batteries are NiMH for example.