Prepared date
Approved date
File number
S230XLP03
Page
7/24
Version
A
4.3 Installation Steps for a Battery or Multiple Batteries Installation
1. Add additional jumpers to complete the series string as depicted in figure 4.
2. Batteries must be connected in parallel before the series string is connected as depicted in
figure 5.
3. Please contact Drypower if the system includes more than 6 batteries.
NOTE:
1) The jumper cable must be the same gauge cable as the positive and negative
terminal cables;
2) The length of jumper cable for parallel string should be the same;
3) Batteries should be at the same state of charge, voltage & impedance when wiring
them in parallel or series;
4) Do not connect the 12V LiFePO4 battery to other chemistries, lots, manufacturers,
series
，
impedance or capacity 12V battery. For example, do not connect IFM12-90E3
(12.8V9.0Ah) to a lead-acid 12V7Ah or IFM12-200E3 (12.8V20Ah) battery.
4.3.1 Series Installation
Batteries are configured in a series when increased voltage is needed. As shown below, three
batteries are connected with jumpers. For example, assume these are 12V batteries. Connecting
them in this configuration results in added voltage to yield 24V but the capacity stays the same.
Figure 4 Installation of batteries in series (2S1P configuration)
•
Two batteries in series: 2 x 12.8 V = 25.6 V (nominal) for 24 V applications
NOTE:
1. Do not connect more than two 12V batteries in series, as the total voltage exceeds the
limits of the built-in PCM. Compromising the PCM increases the risk of an over-voltage or
over-temperature event that may damage the battery and the device.
2. When connect the smart battery in series/parallel, you can read each battery
information via its communication port one by one only!
12V Smart Battery
User Guide
