Generac GT-760 / GT-990 — Charging a Battery
Operation
For the Generac GT-760 / GT-990, from the Generac owner's manual.
Applies to: Generac GT-990 engine
Before you start
- Explosive hydrogen gas risk
Procedure
- Check fluid level in all battery cells; add only distilled water if necessary
- Make sure vent caps are installed and tight
- Clean battery terminals if necessary
- Connect battery charge cable connector plug to 12-VOLT D.C. panel receptacle
- Connect red handle clamp to positive terminal
- Connect black handle clamp to negative terminal
- Start engine with idle control switch off and let battery recharge
- Shut down engine when battery has charged
Tools required
- hydrometer Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 100% charge at specific gravity 1.260 or higher
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.