Battle Born Batteries 8D Manual
5
Connecting the Batteries in Series
Why Connect in Series?
When batteries are connected in series, current capacities remain the same, but the system voltage is additive. For
example, two BB8D batteries connected in series form a nominally 24V system (shown in Fig. 4) and should be charged
using a bulk and absorption voltage of 28.8V, and a float voltage of 27.2V.
How to Make a Series Connection
Note: Battle Born 8D Batteries are capable of being connected in series up to 48V. DO NOT exceed a 48V setup or you will void the battery’s
warranty
.
1.
Before making any connections, make sure to charge each battery up to 14.6V with a proper lithium charger. ALL
BATTERIES SHOULD BE AT THE SAME STATE OF CHARGE PRIOR TO CONNECTING, otherwise you will encounter
balance issues within your system. You can check your battery’s state of charge with a multimeter.
2. Ide
ntify the positive and negative terminals. These are labeled and color-coded
red for positive (+)
,
black for
negative (–).
3.
Determine the appropriate finishing hardware set you will use. Verify that your bolt can fully seat into
the nylok insert of the nut. If multiple lugs are used, longer bolts may be required for the bolt to fully seat into
the nylok insert of the nut.
4.
Make the proper cable connections to the negative of the first battery. Please reference Fig. 1 for the proper order
of hardware.
5.
When connecting to your battery terminals,
DO NOT
finger tighten. Use a torque wrench to torque your hardware
to the specification of 9 to 11 ft-lbs. Failure to adequately secure connections can result in severe damage and will
void your warranty.
6.
Connect the other end of your cable to the positive terminal of the other battery you are connecting to. Repeat step
4.
7.
Repeat steps 3-6 for additional batteries, but
DO NOT
exceed 48V. An example of a correct series
connection can be found below in Fig. 4.
Figure 4:
Two 8D Batteries Connected in Series to create a 24V 270Ah Battery Bank
How to Properly Charge the Batteries
To properly charge your Battle Born Batteries, you will want to verify that any charging component in your system is
capable of being programmed for the following specifications. Charging components can include, but are not
limited to converters, inverter chargers, solar charge controllers, DC to DC chargers, etc.
•
Bulk/Absorption: 14.2V – 14.6V
•
Absorption Time: 60-90 minutes per battery (for parallel string)
•
Float: 13.4V – 13.8V
•
Equalization: 14.4V/ Disabled
•
Temperature Compensation: 0/Disabled
•
Charge Rate:
.5c
NOTE: Not all chargers are capable of multistage charging. If yours is not, you will want to verify it can be programmed for the Bulk/Absorption voltage and have the
other items mentioned disabled if applicable. Consult your charger’s manual or the manufacturer
.