Commencing A New Charge Cycle; Estimating Charge Time - Victron energy Blue Smart 12/4 Manuel

The temperature compensation coefficient is specified in mV/°C and applies to the entire
battery/battery bank (not per battery cell).

3.3 Commencing a new charge cycle

A new charge cycle will commence when:
i. Bulk stage is complete and the current output increases to the maximum charge
current for four seconds (due to a simultaneously connected load)
ii. If re-bulk current is configured; the current output exceeds the re-bulk current in float
or storage stage for four seconds (due to a simultaneously connected load)
iii. The MODE button is pressed or a new charge mode is selected
iv. VictronConnect is used to select a new charge mode or change the function from
'Power Supply' to 'Charger' mode
v.
The AC supply has been disconnected and reconnected

3.4 Estimating charge time

A lead acid battery is at approximately 80% state of charge (SoC) when the bulk charge
stage is completed.
The bulk stage duration T
current (excluding any loads) and Ah is the depleted battery capacity below 80% SoC.
An absorption period T
discharged battery.
For example, the charge time of a fully discharged 100Ah battery when charged with a 10A
charger to approximately 80% SoC is T
Including an absorption duration of T
T = T + T
total bulk abs
A Li-ion battery is more than 95% charged at the end of the bulk stage and reaches 100%
charge after approximately 30 minutes of absorption charge.
can be calculated as T
bulk
of up to 8 hours may be required to fully recharge a deeply
abs
bulk
= 8 hours
abs
= 10 + 8 = 18 hours.
= Ah / I, where I is the charge
bulk
= 100/10 = 10 hours.
the total estimated charge time would be
,
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