Why not use the hot water bag for a long time to keep warm
Hot water bag inside the gas, because the temperature of the water vapor is higher than the water, the temperature controller feel the temperature of the gas, that the hot water bag has been filled.So if you find the charging time, hot water bag to the great power, can be removed, the hot water bag on the transparent lid unplug, releasing gas.
Because it is not water, electrolyte, discharge liquid out, leaving some space. When the electrolyte boiling will swell, so you see the electric hot water will be used for a long time a great expansion, water, heat and will become a little Oh, try it
If the exhaust after the hot water bag is still not hot enough, you can add 0.5g salt into the lid after shaking a few times. Salt can reduce the resistance of the water, add salt into the water bag can be heated faster.
With a long time, there will be a residual heat in the hot water bags and water resistance increases lead to poor insulation.