Generac G0072100 — Inspecting the Battery
Maintenance · battery and charger
For the Generac G0072100, from the Generac owner's manual.
Applies to: Generac G0072100, Generac G-Force 400 Series engine, Generac G-Force 800 Series engine, Generac G-Force 1000 Series engine
Before you start
- Explosion. Batteries emit explosive gases while charging. Keep fire and spark away.
- Risk of burns. Batteries contain sulfuric acid and can cause severe chemical burns.
- Electrical shock. Disconnect battery ground terminal before working on battery or battery wires.
Parts for this job
- 0H3421S Battery Amazon eBay $283.32
Part numbers from the service-parts list for Generac G0072100. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Press OFF to shut down generator; lift lid and remove front panel.
- Remove 7.5A fuse from control panel.
- Remove intake side panel.
- Disconnect white battery charger cable.
- Inspect battery posts and cables for tightness and corrosion; tighten and clean as necessary.
- Unsealed batteries only: completely disconnect battery, removing negative cable first; check fluid level and fill with distilled water only if needed.
- Connect positive battery cable, then negative battery cable.
- Connect battery charger cable.
- Install intake side panel, and install 7.5A fuse.
- Press AUTO button on controller.
- Install front panel and close generator lid.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Battery 12 V, Group 26R wet cell 540 CCA minimum or Group 35 AGM 650 CCA minimum
Full service-parts list: Generac G0072100 →
Source: Generac owner's 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.