The 13th was the coldest day of the season in many places. It even fell below freezing in Nerima, Tokyo. When it gets cold, you need to be careful of smartphones getting cold, which can shorten the battery life. What can you do to prevent this? (Broadcast at around 5:30 pm on December 13th) ■ Smartphones getting cold can drain your battery...What are some bad habits? Caster Hibi Manoko: When I go to cover cold areas, I often find myself saying, "I'm out of battery." What can I do to prevent my smartphone getting cold? According to Smartphone Hospital, which repairs smartphones, the best temperature is 20 to 30 degrees, so it's a good idea to warm it up by wrapping it in a towel or handkerchief or putting it in your pocket. On the other hand, what you shouldn't do is to warm it up with a hand warmer. According to a Smartphone Hospital representative, "Lithium ion is weak against sudden changes in temperature. The battery expands and deteriorates." Associate Professor Saito Kohei, University of Tokyo: The other day, I went to a Christmas market in Germany. I spent a long time outside, so the battery was low, but I learned that things like that (cold weather, etc.) were affecting it. ■Recommended to start charging at 20% and stop at 80% Hibi Caster: According to Smartphone Hospital, there are three "natural enemies" that lead to battery deterioration: high temperature, low temperature, and charging. Being too hot or too cold is not good, and charging also puts a strain on the battery, so "avoiding charging as much as possible" is said to prevent battery deterioration. In addition, the best way to charge your smartphone to prevent battery deterioration is to "charge it after the battery has decreased to a certain extent. The worst thing is overcharging." It is recommended to start charging when the battery is about 20% and stop charging at about 80% instead of 100%. For "iPhone," although it depends on the iOS, it is possible to set the upper limit of charging to 80%, and it is equipped with a function to prevent overcharging. Is the charging method that we tend to do accelerating battery deterioration? ▼Operating your smartphone while charging → Not recommended as it may cause battery deterioration ▼Quick charging → OK as it is a genuine product *Non-genuine products may have unstable voltage Associate Professor Saito of the University of Tokyo: I don't charge my phone many times a day, and I usually charge it when I go to sleep. It's not a cell phone, but I keep using my laptop while it's charging, so it's probably not good for the computer, but there's nothing I can do about it. By being careful, you can use it for a little longer... Hibi Caster: Yes, for example, saving a little power, such as putting your smartphone into dark mode, can help prevent battery deterioration. ■Strong cold air Beware of heavy snow on the Sea of ​​Japan side, take early measures Hibi Caster: What will the weather be like in the future? Masamitsu Morita Weather forecaster: I think it will definitely get colder. A strong cold air is coming in, and looking at the radar as of 5:30 pm, there are two rain clouds (some snow clouds). Up until the 12th, it was said that rain clouds over the South Sea would move northward, bringing rain to the Kanto region, but on the 13th, the forecast changed to one of passing south, so there seems to be no impact. On the other hand, the rain clouds (some snow clouds) on the Sea of ​​Japan side will become stronger, and the winter pressure pattern is likely to strengthen from the 14th (Sat). When there are five or more isobars, it is said to be a "strong winter pattern." According to the forecast map at 9:00 a.m. on the 14th (Sat), there are five isobars, so it can be said to be a strong winter pressure pattern. Therefore, heavy snow will fall on the Sea of ​​Japan side. The characteristic of this time is that cold air will also enter Western Japan. In fact, years in which cold air enters from the west in December tend to have cold winters. I think it's like a sign that "this winter will be cold." After 7:00 p.m. on the 13th, the rain will turn to snow on the Sea of ​​Japan side, and there is a risk of heavy snow in mountainous areas. From the night of the 13th to the 14th, it looks like it will snow quite heavily in mountainous areas, with 50 centimeters and 1 meter in some places over the next three days. Please take measures early. ========== <Profile> Saito Kohei Associate Professor, University of Tokyo Specializes in economic and social thought Author of "Capital in the Anthropocene" sold over 500,000 copies Masamitsu Morita Weather forecaster Born in Nagoya in 1950 Joined the Japan Weather Association and began providing weather commentary on television around 1978 Established Weather Map in 1992 Hobbies are shogi, walking, and island banana research apprenticeship ▼TBS NEWS DIG Official website https://newsdig.tbs.co.jp/ ▼Please subscribe to our channel! / @tbsnewsdig ▼Information provided by "TBS Insiders" https://www.tbs.co.jp/news_sp/tbs-ins... ▼Video provided by "TBS Scoop Post" https://www.tbs.co.jp/news_sp/toukou.... #News #news #TBS #newsdig