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The difference between DC 55W and DC 35W ballast:

The difference between DC 55W and DC 35W ballast:
DC ballast 55W is to achieve this W number, because this W number can ensure his life, and components are good materials! The 35W DC ballast actually has a W of only about 20 W. From the cost of 35W it is lower than 55 W, and the materials used are not the same.
DC 55W power can not be adjusted too high, the mandate will be shortened

55W DC
Thick ballast input: 35/0.85=41.18 (±1 or so)
Thick stabilizer output: 35-37 or so