DC/DC Coverter Based Auxiliary Battery Charging Solutions 2015

DC/DC Coverter Based Auxiliary Battery Charging Solutions 2015
DC/DC COVERTER BASED AUXILIARY BATTERY
CHARGING SOLUTIONS 2015
The Challenge – Keeping Auxiliary Liftgate Batteries Charged
The performance and proper function of a liftgate depends on an adequately charged auxiliary battery pack.
The issue:
On applications where auxiliary liftgate batteries are mounted a long distance from the primary vehicle’s
electrical system, voltage drop will occur. In order to charge auxiliary liftgate batteries, the correct voltage
must be applied to these batteries. Without the correct voltage (i.e. electrical pressure) to push the available current through the liftgate batteries, inadequate recharging will occur and the batteries will run down.
The heavy-duty commercial vehicle alternator is normally set at 14.0 volts and flat compensated. The typical vehicle’s primary battery pack is maintained at approximately 13.8 volts (the difference occurs because
of the voltage drop between the battery and the alternator). With this fact in mind, the starting voltage for
the liftgate batteries is 13.8 volts. The circuit to charge the auxiliary liftgate batteries can be well over 60
feet (on trailer applications). All of this length and connections (including fuses) create voltage drop in the
system.
Under these circumstances it is impossible to have the correct level of voltage at the liftgate batteries. This
reduced voltage results in an auxiliary battery pack that is not maintained at a proper state of charge which
in turn results in shortened battery life, less operating time and possible damage to the liftgates electrical
components (e.g. starter solenoid, motor, switches, etc.).
The Solution – DC/DC Converter Based Charging Solutions
A DC/DC converter eliminates the above problem by amplifying (boosting) any input voltage (9 to 14) to
the correct voltage necessary to charge and maintain the liftgate batteries. Additionally the DC/DC converter mitigates the impact of cold temperatures by increasing the voltage even higher. The complete solution
consists of a Direct (one power source) or Select (multiple power sources) module, hardware / connection
harness, and the DC/DC converter (already pre-installed and complete with battery box).
A – DIRECT™
or SELECT™ System
B – Different Hardware/
Connection Kits
C – DC/DC Converter
Installed in Battery Box
CHARGING SOLUTIONS
SELECT™ AND DIRECT™ VALUE
Direct™ System Options
Choose a single source to control and extend charge time
DIRECT-01
With Dual Pole Connection
DIRECT-02
With Dual Combo Connection 50’
Harness
DIRECT-03
With 7-Way Connection
DIRECT-04
For Reefer Connection or Straight Truck
Application
Select™ System Options
Selects the best available from multiple sources to maximize charge time
SELECT-21
With Reefer and Dual Pole Connections
SELECT-24
With Dual Pole and 7-Way Connections
SELECT-25
With Dual Combo and 7-Way
Connections
Optional System Bypass Kit*
SELECT/DIRECT This Bypass Kit allows you to manually
BYPASS KIT
bypass the DC/DC converter
* This kit is optional and can work with above “Direct & Select Trail Charger Kits” with dual pole or combo connectors.
CHARGING SOLUTIONS
CHARGING SYSTEM SELECTION GUIDE
Direct™ and Select™ Built-In Diagnostics
POWER SOURCE
GOOD INPUT POWER
OR BEING UTILIZED
LOW VOLTAGE OR FAULT
STATE OF CHARGE
(BATTERY WITHOUT POWER)
STATE OF CHARGE
(BATTERY WITH POWER)
FLASH EVERY TWO SECONDS
IF OVER 12.4 VOLTS
FLASH EVERY TWO SECONDS
IF UNDER 12.4 VOLTS
SOLID GREEN
NORMAL CHARGING
FAST FLASHING
CHARGER FAULT
Former TC-Kit to Direct™ / Select™ Conversion Chart
TC-4
TC-5
TC-8
TC-6
TC-9
TC-7
TC-10
TC-23
TC-24
M-210-0415
MAXON LIFT CORP.
Purkeys
823 S. Lincoln St
Lowell, AR 72745
www.maxonlift.com
1.800.227.4116
www.purkeys.net
info@purkeys.net
479-419-4800
11921 Slauson Avenue
Santa Fe Springs, CA 90670
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