Which condition indicates improperly torqued cell link connections of a nickel-cadmium battery?

Which condition indicates improperly torqued cell link connections of a nickel-cadmium battery?

• A. Toxic and corrosive deposits of potassium carbonate crystals.
• B. Light spewing at the cell caps.
• C. Heat or burn marks on the hardware.
• D. Slight increase in terminal voltage.

Answer: (C)

When a cell link connection isn’t torqued properly, the contact at the joint has higher resistance. In a nickel-cadmium battery pack, that extra resistance causes I^2R heating right at the connection, especially as current flows during charging or discharge. The resulting heat can scorch or burn the hardware, leaving visible heat or burn marks—that's a clear sign the connection torque is off and needs attention. Deposits of potassium carbonate crystals point to electrolyte issues or leakage rather than torque problems, venting at the cell caps suggests overpressure from gas buildup (often due to overcharging or cell fault), and a slight increase in terminal voltage can occur during charging or measurement drift and doesn’t specifically indicate improper torque.

When a cell link connection isn’t torqued properly, the contact at the joint has higher resistance. In a nickel-cadmium battery pack, that extra resistance causes I^2R heating right at the connection, especially as current flows during charging or discharge. The resulting heat can scorch or burn the hardware, leaving visible heat or burn marks—that's a clear sign the connection torque is off and needs attention.

Deposits of potassium carbonate crystals point to electrolyte issues or leakage rather than torque problems, venting at the cell caps suggests overpressure from gas buildup (often due to overcharging or cell fault), and a slight increase in terminal voltage can occur during charging or measurement drift and doesn’t specifically indicate improper torque.