Hmmm... was fun changing the battery in my NS-LAC05 rice cooker. It used a CR2450 battery with leads that were soldered to the motherboard. Zojirushi offered to let me ship the rice cooker to them for battery replacement if I covered the shipping and repair fee. I found a battery holder though I had to purchase 10 of them. Not a bad deal since I sold the 9 I didn't use to a local repair shop (evidently they fit several other devices). A bit of work with the soldering iron and it was back in business. According to one friend of mine who spent decades teaching English and translating tech manuals in Japan, most Japanese homes leave the rice cookers plugged in so the battery lasts for much longer time that if you only plug the cooker in to use it.
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