>6.2 BATTERY CHARGER (Battery Care System)
The "Battery Care System" is a set of functions arranged to help extend the working life battery set and optimise its
performance.
Battery recharging: the UPS can be used with sealed lead batteries (VRLA), AGM, open-vented and NiCd
batteries. According to the type of battery used, three different recharge methods are available:
Recharging modes (selectable by “UComGP”)
MULTI SENTRY configurations
Floating: the charge state of the battery
is continuously monitored; when the
mains power supply is present, the
batteries are charged at a preset
voltage level and limited current relative
to the recharge time required and the
capacity of the battery itself.
Two-level recharge (standard): this
recharge is at limited current with two
levels of voltage. In the first instance, the
process uses a quick charge voltage,
whilst in the second stage a float charge.
This type of charging is mainly used with
open-vented batteries or other types
when an accelerated recharge time is
required.
Cyclical recharge: this recharge is
sometimes recommended by battery
manufacturers to prolong the battery life.
It consists of battery charge and
discharge cycles as indicated in the
diagram.
“Commissioning Charge”: this charge
method is useful every time new
batteries are installed in the UPS. By
increasing the voltage to 290 Volts for a
maximum of 24 hours, perfect
equalisation of the battery charge is
assured, thus guaranteeing a uniform
discharge and wear of the battery
monoblocks.
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