Question 98Electricity & Electronics - Assistant Engineer

The correct answer is B) Batteries are kept charged by maintaining a continuous trickle charge. To keep emergency lead-acid batteries in a full state of charge for emergency use, a continuous trickle charge is typically applied. This maintains the batteries at a full charge without overcharging them, which can damage the batteries over time. A trickle charge provides a small amount of current to the batteries to offset the natural self-discharge that occurs, keeping them ready for immediate use in an emergency. The other options are incorrect because performing an equalizing charge daily (A) is not a common practice for maintaining emergency batteries, cycling through discharge and charge cycles daily (D) can shorten the battery's lifespan, and maintaining the maximum charging rate (C) can overcharge and damage the batteries.