previously , the power outage was 2 years ?? it's a very long time of course. But for ordinary users who in the whole mass do not understand even what it is necessary for, it takes a very long time and scares away. You can also make it so that it is 2 years, but in this case the percentage of accumulation should be an order of magnitude higher, which would be fair. Perhaps it is better to make it so that the shorter the power accumulation period, the lower the percentage , and the longer the period, the higher the percentage , respectively.!!