5.3.1. Charging Method
TAB d.d. recommends using the following
charging method.
A.
Constant voltage, constant current,
14.6 V +/- 0.2V for a 12 V battery, 29.2 V +/- 0.2 V
for a 24 VDC battery. We recommend to use
TAB d.d. battery chargers with settings at
‘‘Lithium-mode’’ for the best result and most safe
and reliable configuration.
B.
Multiple or three-stage charging, see graphic
at right, is allowed. TAB d.d. can supply you
with a battery charger with an optimized curve.
We recommend to use TAB d.d. chargers with
settings at ‘‘Lithiummode’’ for the best result and
most safe and reliable configuration.
Bulk phase
In this phase the batteries are charged with a constant current up to the end of
charge voltage (Ubulk), If UBulk is reached the charger will automatically switch to
absorption phase. The maximum charge current (Imax) for TAB d.d. batteries is 1C,
however for endurance cycle life TAB d.d. suggests to limit the current to C3
(1C = nominal battery capacity, C3 = 1/3 of nominal capacity). On some chargers the
maximum charger active time (t0) can be programmed. TAB d.d. suggests setting t0
to: t0 = 2*(BTcap / Chcur) Example: Battery capacity = 90Ah, Charger = 45A, set to a
maximum of 2*(90/45) = 2 hours.
Bulk Phase
Parameter
Typical
Min
Max
Remark
I
max
-
-
1C (90 A)
t
0
Depends on the
battery SOC
-
2*(BTcap /
Chcur)
Table 2. Bulk Phase
15
V Absorption
V Float
Imax.
V Ret. to Bulk
Return
Amps
max. Bulk
timer
max. Absorption
timer
Return to
Bulk timer
Bulk charging
timer
Return to
Bulk timer
=voltage
=current
V Bulk
min. Bulk timer
min. abs timer
Bulk
Abstorption
Float
Bulk