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Martin Perlot of SilverLeaf Electronics proposes the following:

Change DSA 70 from "Battery State of Charge #2" to "Battery".

Justification:

At the time this DSA was assigned, there was no such thing as a "smart" battery like the modern Li-ion cells. Standalone state-of-charge devices were fairly common, and provision for two such meters was made. This was unnecessary - the single DSA is sufficient for state-of-charge devices - and to my knowledge no device has ever implemented the second DSA. Meanwhile, it seems appropriate to give the smart battery its own DSA.