Alliance Intelligent Battery Series
TM
User’s Guide
© 2020 American Battery Solutions Inc. All rights reserved. The data herein is intended as a guide and does not reflect the specification range for any particular property of this
product. Such data is based upon analysis of representative samples and not the actual product shipped. We based the information on data believed to be reliable on the date
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Q: What is the timeout period? How frequent do CAN messages need to come?
A: Message times are defined in the DBC file. Messages from the host are expected
every 1000 ms and timeout currently is after 10 seconds.
Q: If CAN is not used how does the keep alive work?
A: By grounding the Ign- pin. When released the system will commence its sleep
routine.
Q: I assume the Ign inputs only work for discharge (correct?), so then CAN is
required for charge?
A: CAN is not required for charge. As soon as the current or voltage limits are violated
then the BMS will open FETs and protect itself. Still, you will get a better-quality
charge if you follow the current and voltage limits set forth by the BMS.
Q: How does the battery behave when voltage drops during charging to below the
OC voltage of the battery?
A: While charging the system voltage should be increasing. If there is a charger on the
system but you are discharging at the same time beyond the capacity of the charger,
then the BMS will see current draining from the battery and SOC will be determined
based upon the coulombs leaving the battery.