Preventing Quality Problems

(2) Reduction of battery voltage and deterioration of capacity through contact between batteries

Incidents have been reported where terminal-mounted batteries for memory backup or coin-type lithium batteries have come into contact each other, thus forming discharge circuits (shorted state) and leading to voltage drops or capacity deterioration. Observe the following precautions. 1. Remove the batteries from the tray one at a time. If the tray is turned upside down, the batteries will come into contact with each other, forming discharge circuits. 2. Do not place batteries randomly in a parts box or other container. Discharge circuits will be formed by multiple batteries coming into contact numbers of the batteries, causing the batteries to discharge and industrial drain.

Recommended procedures

Prohibited procedures

*Utilize the tray lid in taking out batteries *Do not throw batteries randomly into a parts box by turning over trays containing batteries.

Intermediate package(200 batteries): 20 pieces 10 traysLid tray (tray with no hole)Trays containing batteries Trays containing batteriesLid trayprotruding part*Lay a tray lid flat and place a tray containing batteries on top of it: batteries are pushed up by protrusions of the lid tray so that they can be easily picked up with fingers.

Tray containing batteriesBatteriesParts boxDischarge circuitsBatteries being exhaustedBattery being exhaustedBattery being exhausted

Avoiding Hazards and Preventing Quality Problems

*Contact of batteries with each other forms discharge circuits, thus the batteries are drained.

Chapter 6

Chapter 6- 88