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Parallel Installation Steps
14
Xantrex Lithium-ion Battery Owner's Guide
Parallel Installation Steps
IMPORTANT
:
n
Batteries must be of the same make, model, and age for all batteries connected in parallel.
n
Before connecting batteries together, verify independently using a multimeter that each battery is charged to 100% SoC. The
open terminal voltage should be within 0.05VDC of each other at the point of connection. This procedure helps ensure that
there is minimal current flow and sparking between batteries. Note that you can also use the Xantrex App to provide a reading
of SoC information. Nevertheless, a voltage measurement using a multimeter must be taken to ensure there is as little
voltage between the terminals as possible.
NOTICE
EQUIPMENT DAMAGE
Do not connect batteries in series.
Failure to follow these instructions can result in equipment damage.
Figure 10 Parallel batteries
PARALLEL
=
YES
SERIES
=
NO
This is for illustration purposes only.
NOTE
: Keep the cables between batteries and ground cables the same lengths
for optimal performance and to ensure equal discharging and charging.
How to connect batteries in parallel:
WARNING
FIRE HAZARD
Make sure all DC connections to the common positive bus terminals are torqued according to the bus terminal manufacturer's torque
specifications. Loose connections will overheat. Too much torque may damage the terminals.
Failure to follow these instructions can result in death, serious injury, or equipment damage
.
1. Ensure that DC protection device (such as a DC fuse and disconnect or a DC breaker) is opened or disconnected before
starting.
2. Turn OFF all batteries using the power push button on the battery.
3. Install and secure the new batteries in their location.
NOTE
: With the locations ensure as minimal length, joints, and size variation is made between the cables connecting the
terminals of the batteries.
4. Attach the battery cables to the first Rebling connector as instructed in
the previous section. Do the same for the second Rebling connector.
5. Connect the battery positive cable end from the first Rebling connector
to the common positive bus.