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Before using your new battery charger, read carefully this User’s manual.

Product design and specifications are subject to change, without notice.

WARRANTY

This Steren product is warranted under normal usage against defects in workmanship 

and materials to the original purchaser for one year from the date of purchase.

CONDITIONS

1.- This warranty card with all the required information, invoice or purchase ticket, product 

box or package, and product, must be presented when warranty service is required.

2.- If the product stills on the warranty time, the company will repair it free of charge.

3.- The  repairing  time  will  not  exceed  30  natural  days,  from  the  day  the  claim  was 

received.

4.- Steren sell parts, components, consumables and accessories to customer, as well 

as warranty service, at any of the addresses mentioned later.

THIS WARRANTY IS VOID IN THE NEXT CASES:

If the product has been damaged by an accident, acts of God, mishandling, leaky batteries, 

failure to follow enclosed instructions, improper repair by unauthorized personnel, improper 

safe keeping,   among others.

a) The consumer can also claim the warranty service in the purchase establishment.

b) If you lose the warranty card, we can reissue it, if you show the invoice or purchase 

ticket.

RETAILER INFORMATION

Name of the retailer

Address

Product

Brand

Part number

Serial number

Date of delivery

Product: AA, AAA and 9V NiMH & NiCd battery charger

Model: 903-210

Brand: Steren

In case your product fails 

or have questions, please 

contact your nearest dealer. 

If you are in Mexico, please 

give a call to our Call Center.

   

Call Center

01 800 500 9000

Important

Highlights

   Do not use or store the equipment near wet places. May cause malfunction or shock 

hazard.

   Clean only with a soft, dry cloth.

   Do not drop or hit the equipment, may cause damages.

Operation

Special considerations

   Charge 2/4 AA or AAA batteries.

   Capacity to charge one 9V battery.

   Time to charge: 6 hours.

   NiMH & NiCd batteries.

1

. Select the battery type, move the switch and select NiMH or NiCd.

Specifications

Input:  

 

 

120V~ 60Hz 4W

Output: 

 

 

2x (2,8V - - - 170mA)

 

 

 

2x (2,8V - - - 80mA)

 

 

 

9V - - - 23mA

Nominal consumption:  

2.74 kWh/month

Stand-by power consumption: 

1.65 kWh/month

You  should  place  the  batteries  in  pairs  otherway  the  charger  will  not  charge  the 

batteries.

The LED indicators will always be light up while the charger has batteries and it is 

connected to an outlet.

2

. Place two AA batteries to the front and/or to 

the back.

3

. Pay attention to polarity.

4

. If you want to place AAA batteries down the

integrated adapter.

5

. If you wish to recharge a 9V battery just place 

it on the connector, pay attention to polarity.

7

. Connect the charger to an available outlet.

8

. The “Front” LED indicator will light up in case that the batteries are been charged on the 

front of the charger, or the “Rear” LED indicator will light up in case that the batteries are 

been charged on the back of the charger.

9

. The charge time is 6 hours, once completed the batteries loading time, disconnect the 

charger from the outlet and remove the batteries.

6

. Down the foldable plug.

   Avoid charge the batteries with inverse polarity of the charger.

   Never charge batteries with different capacities at the same time even though they are 

the same type (AA or AAA).

   For new batteries, 2 or 3 charge and discharge at 100% cycles are necessary to optimize 

the functioning of the batteries.

   If the batteries are stored for more than a week, always recharge the batteries before use.

Battery type

Full charge

Normal charge

AAA - 1.2 Vcc

1h

5 - 6h

1h

AA - 1.2 Vcc

11- 12h

9 Vcc

6 - 7h
8 - 9h

2100 mAh

170 mAh
200 mAh

300 mAh
1100 mAh

12h

7h
9h

1h
6h

700 mAh

1h

Fast charge

Charging time batteries

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