The discharge current of the battery cabinet suddenly becomes low

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4 FAQs about The discharge current of the battery cabinet suddenly becomes low

Should a battery be discharged to a lower voltage?

At a very high current flowing for only a very short time, it is not only' safe, but advisable to allow a battery to discharge to a lower voltage, the increased drop being due to the rapid dilution of the acid in the plates. The cell voltage will rise somewhat every time the discharge is stopped.

Does battery current drop as power is consumed?

Yes, battery current drops as power is consumed. According to Ohm's Law (V = I × R), if voltage decreases under load, current decreases too. A battery's internal resistance is low, which keeps current and voltage closely linked during normal usage. This correlation affects the battery's maximum output and performance under short circuit conditions.

When should a battery discharge be stopped?

Theoretically, the discharge may be continued until the voltage drops to zero, but practically, the discharge should be stopped when the voltage of each cell has dropped to 1.7 (on low discharge rates).

Why does a battery drop when a current is drawn?

When a current is being drawn from the battery, the sudden drop is due to the internal resistance of the cell, the formation of more sulphate, and the abstracting of the acid from the electrolyte which fills the pores of the plate. The density of this acid is high just before the discharge is begun.

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