Rechargeable hand warmer safe use tips
2. the market's soft rechargeable hand warmer products, built-in "thermogenic liquid" heating will form a small amount of gas resulting in the expansion of the bag, so this rechargeable hand warmer every 10-20 times the heating needs to discharge the remaining air 1 time, discharge the remaining air, you need to turn off the power supply and then unplug the bag, remove the exhaust plug at the location of the water injection, the liquid injection slowly squeeze the mouth upward, the air will be discharged from the bag. Do not add water or boil, fire and other methods of heating rechargeable hand warmer, if the rechargeable hand warmer bag liquid leakage, you must stop using.