Battery safety
The exact device and battery manufacturer instructions remain controlling.
Coin and button cells
Keep small cells secured and away from children. A swallowed or inserted coin cell is an urgent emergency; follow local emergency and poison-control guidance immediately.
Prevent short circuits
Do not carry loose batteries with keys, coins or metal tools. Never bridge terminals while measuring or installing a cell.
Do not recharge primary cells
Recharge only batteries explicitly marked rechargeable, using a charger designed for that chemistry and voltage.
Stop on damage
Do not use swollen, leaking, overheated, punctured or corroded cells. Follow manufacturer and local disposal guidance.