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Under normal use, it is very unlikely that a 1.5v dry cell will explode.

However, trying to charge a non-rechargeable battery, can make it explode.

The charging current causes gas to form in the electrolyte, which puts pressure on the case, which is usually non-vented. The increased pressure can cause the case to explode.

There have been chargers made, that will increase the life of single use cells, by charging them. These have a very small charging current, with long charge time, that does not allow gasses to build up.

Trying to fast charge a rechargeable battery will also make it explode, for the same reasons.

It is best to use only the charger specified for use with the type of battery. The charge currents (and even temperature monitoring) are built into intelligent chargers, to give the optimum charge without fear of explosion.

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11y ago

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