ELECTRICAL SYSTEM TROUBLESHOOTING PROCEDURES
TEST OR INSPECTION
Batteries Will Not Maintain
To avoid injury, eye protection and acid-resistant gloves must be worn
when working around batteries. Do not smoke, use open flame, make
sparks, or create other ignition sources around batteries. If a battery is
giving off gases, it can explode and cause injury to personnel.
Remove all jewelry such as rings, ID tags, watches, and bracelets. If
jewelry or a tool contacts a battery terminal, a direct short will cause
instant heating, damage to equipment, and injury to personnel.
Sulfuric acid contained in batteries can cause serious burns. If battery
corrosion or electrolyte makes contact with skin, eyes or clothing,
take immediate action to stop the corrosive burning effects. Failure to
follow these procedures may cause injury or death to personnel.
Eyes. Flush with cold water for no less than 15 minutes and seek medical
Skin. Flush with large amounts of cold water until all acid is removed. Seek
medical attention as required.
Internal. If corrosion or electrolyte is ingested, drink large amounts of water
or milk. Follow with milk of magnesia, beaten egg or vegetable oil. Seek
medical attention immediately.
Clothing/Equipment. Wash area with large amounts of cold water. Neutral-
ize acid with baking soda or household ammonia.
Check electrolyte temperature and
1. If temperature is over 120F (49C)
specific gravity (TM 9-6140-200-
and specific gravity is 1.300 or greater,
batteries are being overcharged. Refer
to Malfunction 7.
2. If temperature is over 120F (49C),
but specific gravity is 1.225-1.235,
recharge battery. Refer to TM 9-6140-
200-14. If the problem still exists, go to
Perform load test (TM 9-6140-200-
If batteries are defective, replace (WP
Check rate of charging. Place battery on
If specific gravity does not recover to
Specific Gravity Will Not
Increase to 1.240 Under
charge and ensure that cells are venting.
1.240 in 25 hours of charging, replace