Radio Shack 23-437 User's Manual

Radio Shack Battery Charger User's Manual - 23-437.
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© 2002 RadioShack Corporation.

All Rights Reserved.

RadioShack and RadioShack.com are trademarks 

used by RadioShack Corporation.

23-437

OWNER’S MANUAL — Please read before using this equipment.

Thank you for purchasing the RadioShack 
Overnight Charger for AA/AAA/9V Ni-Cd or 
Ni-MH Batteries. Your charger is designed 
to charge two or four AA or AAA batteries, or 
one 9V battery.

Its features include:

Two Charging Indicators — FRONT or 
REAR lights when charging batteries in the 
front or rear charging bay and turns off when 
charging is complete.

Reverse Polarity Protection — protects 
the charger and batteries against damage 
from incorrectly installed batteries.

Automatic Timer Shut-Off — turns off the 
charger to prevent overcharging AA or AAA 
batteries.

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SAVE THESE 
INSTRUCTIONS!

This manual contains important safety and 
operation instructions for your battery 
charger. Before using your charger, read all 
instructions and cautionary markings on the 
charger, the batteries to be charged, and the 
product that uses the batteries.

Warnings:

• Charge only Ni-Cd or Ni-MH batteries 

with this charger. Other types of 
batteries might burst, causing personal 
injury.

• Do not disassemble the charger; take it 

to a qualified service technician when 
service or repair is required. Improper 
reassembly may result in a risk of 
electric shock or fire.

• Do not use an attachment not 

recommended or sold by RadioShack 
as this could result in a risk of fire, 
electric shock, or injury.

Cautions:

• Do not expose the charger to rain or 

excessive moisture.

• Do not operate the charger if it has 

received a sharp blow, or been dropped 
or damaged in any way. Take it to a 
qualified service technician for repair.

• Do not use an extension cord. Its use 

could result in fire or electric shock.

• Never use the charger as a DC power 

source for any electrical equipment.

Your charger is ETL listed to UL standards.

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1. Slide Ni-Cd/Ni-MH to the desired setting.

2. Adjust the charging bay for AA or AAA 

batteries.

The tab on the top of the front and rear 
charging bays let you adjust the battery 
holder for AA or AAA batteries. Pull 
down the tab to charge AAA batteries. 
Lift up the tab to charge AA batteries.

3. To charge two batteries, insert the 

batteries in the front or rear bay 
according to the polarity symbols 
(+ and –) marked inside. 

.#±

To charge four batteries, insert the 
batteries in the front and rear charging 
bay according to the polarity symbols 
(+ and –) marked inside.

4. Lift the AC plug’s prongs, located on the 

rear of the charger, until they snap into 
place. Plug the charger into a standard 
AC outlet. FRONT lights when AA or 
AAA batteries are charging in the front 
bay. REAR lights when AA or AAA 
batteries are charging in the rear bay.

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If an icon appears at the end of a paragraph, 
go to the box on that page with the 
corresponding icon for pertinent information.

— Warning 

 

° — Hint

. — Caution 

 

± — Note

# — Important

Ni-Cd/
Ni-MH

FRONT 
Indicator

REAR 
Indicator

Tab

Charging 
Bay

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Do not mix battery types (Ni-Cd and Ni-MH).

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• Both batteries must be installed in the same 

bay.

• It is normal for the batteries to become warm 

while charging.

• Charge the batteries in an area with 

temperatures between 32 and 113° F (0–45° 
C). If the area is too cold, the batteries can 
permanently lose their ability to charge. If the 
area is too warm, the batteries will not fully 
charge.

• Do not try to charge batteries other than 

those listed in this manual, or use 
procedures other than those described in 
this manual.

• You cannot charge AA batteries in one bay 

and AAA batteries in the other bay at the 
same time.

AC Plug

Tab

Charging 
Bay

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