Victron energy Blue Smart IP67 Manual página 16

Remarks:
a) Disconnect all loads before attempting to recharge a very weak or
fully discharged lead-acid battery. Loads may be reconnected once
the bulk phase has started.
b) Disconnect all loads before attempting to recharge a Li-ion battery
when the under voltage protection (UVP) of the Li˗ion battery has
tripped. Loads may be reconnected once the bulk phase has
started.
3.4 Triggering a new charge cycle
A new charge cycle will start when:
a) The charger has reached float or storage, and, due to a load,
current increases up to maximum current during more than four
seconds.
b) The AC supply has been disconnected and reconnected.
3.5 Estimating charge time
A lead-acid battery is about 80% charged at the beginning of the
absorption period.
The time T to 80% charged can be calculated as follows:
T = Ah / I
Where:
I is the charge current (= charger output minus load current).
Ah is the amount of Ah to be charged.
A full absorption period of up to 8 hours is needed to charge the battery
to 100%.
Example:
Charge time to 80% of a fully discharged 100Ah battery when charged
with a 10A Blue Power Charger: T = 100 / 10 = 10 hours
Charge time to 100%: 10 + 8 = 18 hours.
A Li-ion battery is more than 95% charged at the beginning of the
absorption period, and reaches 100% charge after approximately 30
minutes absorption charge.
3.6 High internal resistance
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