You really need to get a full charge. It is preferable to charge with a charger and not expect your alt to bring a drained battery up to full charge. You can either use your own charger or take the battery to a chain store. While at the store, have them load test the battery. My alternator output varies and was previously "rebuilt" locally. Diodes intermittently tested bad on the chain store machine. I'm going to have the guy that rebuilt it replace the diodes when I have a chance to pull the alternator.

Have any replacement alternator bench tested before leaving the store if you end up with any of the reman replacement alternators currently on the market. Only the alternator, regulator, battery & wiring are involves making repair relatively straight forward.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.