1, high efficiency (up to ordinary hand sprayer 3 to 4 times), low labor intensity, easy to use.
2, gives the first impression is good, easy to sell
1, the battery capacity of the sprayer determines the length of continuous operation time.
2, too many brands of different models are not common maintenance is not easy, repair costs are too high. Warranty over the battery also
Almost friends, change to more than a hundred pieces, the pump is also prone to problems are not really good repair.
3, due to some electrical aspects of the things that must be repaired by professionals.