Gilian
®
BDX
II
ABATEMENT AIR SAMPLING PUMP
16
Document No. 801863M (Rev A)
3.2.2
Available Battery Chargers
• Single-Unit Charger
Single unit chargers provide a constant-
rate charge of 190 mA and can fully charge
a BDX
II
battery pack in 14 hours.
• Universal Multi-Station Charger
The Multi-Station Charger can charge up to
5 battery packs simultaneously. These
chargers provide a timed, constant-rate
charge of 180 mA and can fully charge a
battery pack in 16 hours. The unit auto-
matically switches to trickle charge
(45␣ mA) as each battery pack becomes
fully charged.
• BMS Multi-Station Charger System
The BMS Multi-Station Charger & Diagnos-
tic System can charge up to 5 battery packs
simultaneously. The BMS offers timed
charging that switches to a pulsed charge
when the battery pack reaches full charge
capacity. Batteries can be charged in un-
der 14 hours. The diagnostic programs
provide accurate test data regarding bat-
tery voltage under load and battery capac-
ity.
3.2.1
Battery Charging
• Battery Life
Battery life is usually measured in charge/
discharge cycles. Gilian battery packs are
capable of providing 300–500 charging
cycles. Since this is very difficult to track
over the life of the battery, Table 3.1 will
help you to anticipate how long the bat-
tery should last. The estimated battery life
is based on proper battery maintenance.
• Memory Effect
Nickel-Cadmium batteries will develop re-
duced capacity when the user does not
maintain the practice of fully discharging
or fully charging the battery after each use.
Memory effect takes time to develop and
usually can be eliminated with two dis-
charge/charge cycles.
• Leakage Current
Nickel-Cadmium batteries always have a
small internal leakage current. If the bat-
tery pack has been removed from the
charger for more than two days without
use, it will require additional charging to
restore it to full capacity. This process can
be repeated 2–3 times without causing
signs of memory effect.
Table 3.1
Estimated Battery Life
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