BREN-TRONICS, INC.
10 Brayton Court
Commack, NY 11725
P: 631-499-5155 | F: 631-499-5504
www.bren-tronics.com
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ALT 170C
(BTC-70844-2)
PR4G WORKSHOP CHARGER
OPERATION MANUAL
850084 REV D
Data presented in this document is subject to change without notice
1-5 CHARGE CYCLE DESCRIPTION
Each of the battery types that are capable of being charged by the Charger is
connected to the charger via their respective battery adapter cable. Each adapter can
charge two batteries simultaneously. The appropriate battery adapter is installed on
the control panel and serves as the electrical interface between the batteries being
charged and the charger circuits. The battery charger control circuits constantly
monitor the following battery conditions during the charge cycle, as appropriate, to
ensure that the battery is properly being charged:
a. Temperature
(T)
b. Voltage
(V)
c. Current
(I)
d. Time
(t)
e.
Voltage change (
∆
V)
f.
Temperature rate of change (
∆
T/
∆
t)
The charger operation during a typical charge sequence is automatic and the battery
charge status is displayed to the user by the panel LED indicators as follows:
a.
Detection
- The charger tries to detect a battery in an adapter. The CHARGE
LED (amber) blinks slowly during this process.
b.
Pre-charge
– The charger brings the battery voltage up to a safe level before
the rapid charge process begins. This step may take several minutes for a very
discharged battery. The CHARGE LED (amber) blinks rapidly during this
process.
c.
Fast Charge
– A timed fast charge cycle brings the battery to approximately
90% of full charge capacity. The CHARGE LED (amber) is lit solid during this
process.
d.
Ready
– The fast charge cycle is complete. The Battery may be removed and
used at this time. The READY LED (green) is lit steadily at this time.
e.
Trickle / Top-off
– When fast charge is complete, the charger will top off of the
battery to 100%. Each battery is charged for five minutes at a time. For Lithium
Ion and Lithium Polymer batteries the top-off cycle will stop after the battery is
100% charged. For all other types, the Trickle / Top-off cycle is repeated
indefinitely to keep the battery at 100% charge. Leaving the battery on the
charger will not harm the battery. The battery may be removed and used at this
time. The READY LED (green) blinks during this process.
The Battery may be removed and used at anytime during the charge cycle without
damage to the charger or battery. The state-of-charge indicator (SOC) will display the
battery condition.
NOTE
After removing a battery from the charger, wait for the
corresponding battery status LED’s to turn off before installing a
new battery.
