1) Bulk charge stage
In bulk charge stage, charge current begins to flow, typically at the maximum rate of The
controller will supply solar power to charge battery as much as possible.
2) Absorption stage
When battery charging voltage is reached to Absorption voltage point, the charging stage changes
from bulk charge to Absorption. Constant-voltage regulation is used to maintain battery voltage at
the Absorption stage. If the charging current drops to one-tenth of the maximum charging current
setting point, the charging status will change to Float stage.
If the elapsed time of absorption stage is over setting value for C-V charging time, it will also
transfer to Float stage.
