The experiment using a high-tech table patients. The experiment of 12 times the ability to test the retention of weight things in leveling up - down. And in the time which the 1 seconds.Depending on the number of times and use. By measuring the voltage of the battery, from acquiring the weight of things 1 kg, measure voltage has 12 v. And compared by weight of things 11 kg, measure voltage has 11.7 volt, the efficiency of the battery decreases. Motor driving gear can rotate slowly.
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