| Excessive use of water, corrosion deposits on caps, excessive case heat, warped, or broken plates, active material shedding, damages seperators Not holding a charge | Overcharging Excessive vibration Undercharging Loose fan belt Sulfation Bad battery Low electrolyte | Check regulator, check converter, replace battery Repair hold-down Check Regulator Tighten fan belt Perform slow charge Replace Battery Replenish |
| Won't start engine | Low voltage Low electrolyte Loose cable terminal Bad cable terminal Corroded terminals Worn or broken cables Cold/hot weather | Recharge battery, load-test Replensih Tighten terminals Replace terminals Clean corrosion Replace cables Use larger battery |
| Will not operate appliances and accessories | Low voltage Low electrolyte Loose cable terminal Bad cable terminal Corroded terminals Break in wiring Bad battery No Power Low output from alternate or converter | Recharge battery, load-test Replensih Tighten terminals Replace terminals Clean corrosion Check wiring Replace battery Check battery, clean terminals, check wiring Check fuse box Check charging sources |