Generac 005222-0 / QT 3.9L 40kW — Battery Inspection and Maintenance
Maintenance
For the Generac 005222-0 / QT 3.9L 40kW, from the Generac owner's manual.
Applies to: Generac QT 3.9L 40kW, Generac V-type engine
Before you start
- DO NOT use jumper cables and a booster battery to crank or start the generator engine.
- Storage batteries give off explosive hydrogen gas.
- Battery electrolyte fluid is an extremely caustic sulfuric acid solution.
Parts for this job
Part numbers from the service-parts list for Generac QT 3.9L 40kW. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Inspect the battery posts and cables for tightness and corrosion. Tighten and clean as necessary.
- Check battery fluid level of unsealed batteries; if necessary fill with DISTILLED WATER ONLY.
- Have the state of charge and condition checked with an automotive-type battery hydrometer.
Tools required
- automotive-type battery hydrometer Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- BCI Group No. 24F-6, 535 CCA @ 0 deg. F
Full service-parts list: Generac QT 3.9L 40kW →
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.