Hydrometer Check

Refer to illustration for hydrometer identification. See Fig 1 .

• Green eye visible - Load test the battery. See BATTERY LOAD TEST  .
• Dark; Green eye not visible - Charge the battery. Load test the battery. See BATTERY LOAD TEST  .
• Clear or Light Yellow - Discard battery. Do not attempt to recharge.

Fig 1: Identifying Built-In Battery Hydrometer

Courtesy of GENERAL MOTORS CORP.