Dell Latitude D510: Charge Gauge Health Gauge

Charge Gauge

Before you insert a battery, press the status button on the battery charge gauge to illuminate the

charge-level lights. Each light represents approximately 20 percent of the total battery charge. For

example, if the battery has 80 percent of its charge remaining, four of the lights are on. If no lights

appear, the battery has no charge.

Health Gauge

The battery operating time is largely determined by the number of times it is charged. After

hundreds of charge and discharge cycles, batteries lose some charge capacity, or battery health. To

check the battery health, press and hold the status button on the battery charge gauge for at least

3 seconds. If no lights appear, the battery is in good condition, and more than 80 percent of its

original charge capacity remains. Each light represents incremental degradation. If five lights

appear, less than 60 percent of the charge capacity remains, and you should consider replacing the

battery. See your

User’s Guide

for more information about the battery operating time.

Quick Reference Guide 13