Compaq 1650, Presario 1600 Series, 1655 manual Battery Pack Operating Time

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Maintenance & Service Guide

Presario 1600 Series

Models: 1650 and 1655

Home Page Notice Preface Product Description Troubleshooting Illustrated Parts Catalog Removal & Replacement Procedures Specifications Pin Assignments Battery Pack Operations

Battery Pack Operating Time

This appendix covers the following information concerning battery pack operating time:

Increase battery pack operating time

Conditioning a battery pack

Disposal of a used battery pack

Increasing Battery Pack Operating Time

Battery pack operating time differs depending on several variables. To avoid unnecessary replacement, consider the following variables when determining how long a charged battery pack should last:

Power management settings

Hardware configuration

Software applications

Installed options

Display brightness

Hard drive usage

Changes in operating temperature

Type and number of installed PC Cards

NOTE: The power consumption requirements for PC Cards vary widely. Some cards drain the battery pack very rapidly.

Battery pack operating time can be increased by as much as 50 percent by controlling the energy required by the computer and the energy stored in the battery pack.

Minimizing the Energy Required

To minimize the energy required by the computer, follow these steps:

Set the power conservation levels in the Power Management utility to Maximum.

Customize the timeout value to work more efficiently with the applications. The amount of battery life depends on the values selected.

Maximizing the Energy Stored

To maximize the energy stored in the battery pack, follow these guidelines:

Condition the battery pack at least every 30 days to improve overall battery performance.

Keep a battery pack in the computer when using it with AC power to supply the battery pack with a constant trickle charge.

Store the battery pack in a cool, dry place when not in use.

Conditioning a Battery Pack

CAUTION: To avoid a loss of data, ensure that all data is saved before discharging a battery pack.

To condition a battery pack, complete the following steps:

1.Plug in the AC adapter and allow the battery to charge until the fast charge arrow on the display disappears. Your battery gauge may read 100 percent for a period of time before the arrow disappears. Do not unplug the AC adapter until the arrow disappears.

2.Unplug the AC adapter and allow the battery to drain until the computer reaches hibernation and turns itself off. Do not plug in the AC adapter during this process or you will need to restart with Step No. 1. You may use the computer while the battery is draining.

3.Your battery is re- conditioned.

4.Plug in the AC adapter and begin using the computer.

The table below shows battery pack charge times by model.

 

Battery Charge Time

 

Computer

On Line

Off Line

Model 1/NiMH Battery Pack

4.0 hours premature termination

2:00 hr

Model 2/Li ion Battery Pack

4.5 hours premature termination

2:50 hr

Disposal of a Used Battery Pack

In the interest of safeguarding our environment. Compaq Computer Corporation recommends that nickel metal hydride (NiMH) and lithium ion (Li ion) battery packs be recycled. Battery packs should be handled in accordance with country, state, province, or local regulations.

CAUTION: Never attempt to open or service a battery pack. Opening a battery pack not only damages the pack and makes it unusable, but also expose potentially harmful battery components.

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Contents Maintenance & Service Guide Maintenance & Service Guide Symbols PrefaceProduct Description Port ReplicatorTroubleshooting Follow the Preliminary Steps Run the Power-OnSelf-Test PostIllustrated Parts Catalog Removal and Replacement Procedures Serial Number LocationSpecifications Connector Pin Assignments Battery Pack Operating Time Hard Drive CD Drive Models and FeaturesProcessor ModemControls and Lights Front of UnitLeft Side Components Right Side Components Bottom of Unit Rear Connectors Port Replicator Pin Port Replicator Connector Port Replicator Rear Connectors Port Replicator Rear ConnectorsPower Management for Windows Removing the Battery Pack Preliminary Steps Run Computer CheckupPower-On Self Test Post Running PostClearing the Power-on Password Computer Checkup Test Compaq DiagnosticsView System Information Inspect Contacting Compaq Support Shipping PreparationDiagnostic Error Codes ProceduresTroubleshooting Without Diagnostics Before Replacing PartsSolving Minor Problems Solving Printer Problems Solving PC Card ProblemsSolving Power Problems Solving Touch Pad/Pointing Device ProblemsSystem Unit Description Spare Part NumberBoards Description Spare Part NumberMiscellaneous Parts Documentation Software Mass Storage Devices Miscellaneous Cables Kit Miscellaneous Cables Kit Spare Part NumberDescription Modem Cables Spare Part NumberMiscellaneous Hardware and Plastics Kit Miscellaneous Hardware and Plastics Kit Spare Part NumberMiscellaneous Parts Quick Reference Guide Description Spare Part Number Quick Restore CDDocumentation and Software QuickFind Part Number Suffix MonthElectrostatic Discharge Generating StaticService Considerations Select the desired illustration Cables and ConnectorsCables Plastic PartsZIF Connectors Ribbon cable position for the 5.0-GB or 4.0-GB hard drive Ribbon cable position for the CD drive Ribbon cable position for the diskette drive Back to Cables and Connectors Preparing the Computer for Disassembly Prepare the computer for disassembly Removing the Palmrest Cover with Touch PadReturn to Removal & Replacement Procedures Removing the Keyboard Return to Removal Replacement Procedures Removing the Heatspreader Removing the Modem To replace the modem, reverse the previous procedures Removing the Processor Replace the processor bracket Removing the Status Panel Maintenance & Service Guide Removing the Interface Board with Header Audio BoardNext Step When replacing interface board, ensure both Interface Board Components Removing the 5.0-GB or 4.0-GB Hard Drives Maintenance & Service Guide Bracket, reverse the previous procedures Removing the Battery Charger Board Removing the CD Drive Disconnect the CD drive cable from the system board Removing the Display Panel Assembly Maintenance & Service Guide Important before Removing the Upper CPU Cover Removing the Speaker Assembly Removing the Diskette Drive Maintenance & Service Guide Return to Removal Replacement Procedures Removing the Fan Assembly Removing the Audio Board To replace the audio board, reverse the previous procedures Removing the System Board Remove five standoffs from the system board Remove three screws from the system board Return to Removal & Replacement Procedures Removing the Memory Module Return to Removal Replacement Procedures

1650, 1655, Presario 1600 Series specifications

The Compaq Presario 1600 Series was a range of laptop computers introduced in the late 1990s, catering to users seeking performance and portability at an affordable price. Among the most notable models in this series were the Compaq Presario 1650 and 1655, which offered a combination of usability and innovative features that appealed to both casual users and professionals.

These laptops were characterized by their sleek design and relatively lightweight build, making them practical for users on the go. Weighing approximately 6.5 to 7 pounds, they were still manageable for regular travel. The displays featured a 15-inch diagonal screen with a resolution of 800x600 pixels, a respectable offering for that era, providing clear visuals for productivity tasks and multimedia consumption.

Powering these laptops, users found a choice between Intel Pentium II and III processors, allowing for enhanced performance. With speeds ranging from 300 MHz to 450 MHz, these processors ensured that users could run various applications efficiently, whether for business or entertainment. The Presario 1655 provided options for more advanced graphics with an integrated S3 Savage graphics card, enhancing its capability for 3D applications and casual gaming.

In terms of memory, the 1600 series laptops typically came equipped with 32 MB of RAM, which could be upgraded to accommodate the increasing demands of software and multitasking. Additionally, the units included a hard drive capacity ranging from 4 GB to 12 GB, providing ample storage space for documents, multimedia files, and applications.

Connectivity options were also a significant focus for the Presario 1600 Series. Featuring both Ethernet and modem ports, users could easily connect to networks and the internet. The laptops included USB and parallel ports, catering to a variety of peripheral devices, including printers and external storage solutions.

Another notable aspect of the Compaq Presario 1600 series was its emphasis on multimedia features. The presence of a built-in CD-ROM drive allowed users to access software and media easily, while integrated speakers offered decent audio output for video playback. Some models even came equipped with a 56k modem for dial-up internet access, keeping users connected during an era when internet use was expanding rapidly.

Overall, the Compaq Presario 1600 Series, including the 1650 and 1655 models, represented a significant step in portable computing during the late 1990s. With their combination of performance, portability, and multimedia capabilities, these laptops were well-received and laid the groundwork for future advancements in the laptop industry.