Most “Drop In” Lithium Batteries Not ABYC Compliant

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The way I read this, batteries with BMSs that do not communicate are now obsolete:

If a shutdown condition is approaching a battery system should notify the operator with a visual and/or audible alarm before disconnecting the battery from the DC system.

ABYC E13-7

I think ABYC should have required all BMS to be able to communicate with charging sources. This could be as simple as a set of contacts, but CANBus is better. More here on why. And here on ways to do that.