Owner's Manual for Bauer 1704C-B 20V Hypermax Lithium Rapid Charger

Comprehensive owner's manual for the Bauer 1704C-B 20V Hypermax Lithium Rapid Charger. Includes safety warnings, charging procedures, LED indicator explanations, and maintenance guidelines.

Quick answers from the manual

Quick answer

The Bauer 1704C-B is a 20V lithium-ion battery charger. To charge, plug the unit into a 120VAC outlet and slide the battery onto the charger. Monitor the LED lights to determine charging status. p. 5, 6

Key actions

Plug the charger into a grounded 120VAC outlet. p. 6
Slide the battery pack onto the charger. p. 6

First start

Place the charger on a dry, fireproof surface in a room between 50–104°F. p. 6

Problems and fixes

Red LED blinks only

Temperature issue or problem with battery/charger. Allow to cool or reach proper temperature.

p. 6

Green and Red LEDs both blink

Battery or charger may be damaged. Have inspected by a qualified technician.

p. 6

Maintenance and reset

Wipe external surfaces with a clean cloth after use. p. 7

Technical specifications

Parameter	Value	Meaning	Pages
Input Rating	120VAC, 50-60Hz, 48W	Power requirements	p. 5
Output	21.8VDC / 1.7A	Charging output	p. 5

Where to find it in the PDF

Safety Information p. 2, 3
Operating Instructions p. 6
Specifications p. 5

Table of contents

Quick Guide

The Bauer 1704C-B is a 20V lithium-ion battery charger designed for indoor use. Before charging, ensure the battery pack is undamaged and the charger is placed on a stable, fireproof surface. The charging process is monitored via LED indicators on the unit.

Safety Information

General Safety:

Charge only designated 20V Hypermax Lithium battery packs.
Do not use the charger on flammable surfaces like carpets or rugs; these obstruct ventilation.
Keep the charger at least 1 foot away from flammable objects.
Do not expose the charger to rain or wet conditions.
Use only in well-ventilated areas.
Do not use extension cords with this charger.

Lithium Battery Safety:

Do not open, drop, short-circuit, puncture, or incinerate battery packs.
Do not charge damaged battery packs.
Keep battery packs away from metal objects (coins, keys, screws) to prevent shorting.

Operating Instructions

1. Place the charger on a dry, fireproof surface in a room with a temperature between 50–104°F.

2. Inspect the battery pack for damage. Do not charge if cracked, open, or leaking.

3. Plug the charger into a grounded 120VAC, 60Hz receptacle.

4. Slide the battery pack onto the charger. Do not force the battery if it does not fit.

5. Monitor the LED indicators:

Red LED blinking only: Temperature issue or problem with battery/charger. Allow to cool or reach proper temperature.
Green and Red LEDs blinking: Battery or charger may be damaged. Have inspected by a qualified technician.
Green LED continuous, Red LED blinking: Battery is charging.
Both LEDs continuous: Battery is fully charged.

6. Once charged, unplug the charger and disconnect the battery pack.

Maintenance and Servicing

Before each use: Inspect for loose hardware, damaged wiring, or cracked parts.
After use: Wipe external surfaces with a clean cloth.
Storage: Disconnect the battery pack and store in a dry, indoor area out of reach of children.
Servicing: Do not open the base or adapter. All repairs must be performed by a qualified technician using identical replacement parts.

Specifications

Input Rating: 120VAC, 50-60Hz, 48W
Output: 21.8VDC / 1.7A
Battery Type: Li-ion

Practical help

Common problems

Red LED blinks only

The battery or charger is outside the correct charging temperature range. Allow both to reach proper temperature.

Green and Red LEDs both blink

The battery or charger may be damaged. Have them inspected by a qualified technician before attempting to charge.

Battery does not fit the charger

Do not force the battery. Ensure it is a compatible 20V Bauer battery pack.

Before use

Inspect charger for loose hardware or damaged wiring
Ensure the charging surface is fireproof and stable
Verify the battery pack is not cracked, open, or leaking
Ensure the outlet is grounded and provides 120VAC
Check that the charging area is well-lit and clean

Specs in practice

Input Rating: Requires 120VAC, 50-60Hz power source.
Battery Type: Compatible with Li-ion battery packs.

Images and diagrams

Figure A illustrates the charger unit, highlighting the locations of the Red and Green LED indicators.

Model compatibility

Designed specifically for Bauer 20V Hypermax Lithium battery packs.
Do not use extension cords with this charger.

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Manual page author

David Miller

Documentation analyst

Organizes user manual content into clear summaries, with attention to model details, product context, and everyday usability.