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Generac — Battery Installation

Installation

From a Generac service manual — check it applies to your exact model before use.

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Before you start

  • Damage will result if battery connections are made in reverse
  • Do not touch positive terminal to bracket during installation

Procedure

  1. Verify generator turned OFF
  2. Turn off utility power supply to transfer switch
  3. Remove 7.5 Amp ATO fuse from generator control panel
  4. Remove top lid, front access panel, battery access panel
  5. Pull battery cables through battery access panel
  6. Connect red cable to positive post
  7. Connect black cable to negative post
  8. Install red battery post cover
  9. Slide battery through access window, seat in base
  10. Install battery bracket with M6 screw
  11. Reinstall 7.5 Amp fuse
  12. Reassemble battery access panel, front door, top lid

Tools required

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Specs & values

  • Battery: Group U1, 12V, minimum 300 CCA

Source: Generac service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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