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Maplin 41W DC Fixed Voltage Bench Power Supply

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0333 400 9500

Quoting product code: XM20W


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About this product


  • Fixed 13.8V regulated bench power supply
  • Ideally suited for CB and PMR radio applications
  • Useful when bench testing and setting up in car equipment

Product overview

• Fixed 13.8V regulated bench power supply
• Ideally suited for CB and PMR radio applications
• Useful when bench testing and setting up in car equipment
• Robust steel case construction, with illuminated rocker switch
• Binding post termination
• Features short-term overload and short circuit protection

Please note these power supplies are designed for use in well ventilated areas.

Rated 5 out of 5 by from Stereo power! I have owned one of these units for some time now, powering a car stereo in my garage. a reliable power supply that hasn't let me down. Ideal for anyone looking for 12v power without hassle! Now for a sub!
Date published: 2015-04-10
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Operating Specifications

Output Voltage:

13.8 VV

Dimensions & Weight



Can it charge a car battery?

Asked by: Clint
No this would not be suitable.
Answered by: Billy
Date published: 2017-11-21

Does this have over voltage protection?

Asked by: rpt0
Unfortunately we no longer stock this item as it has been discontinued from our range. Therefore we are unable to obtain any further in-depth Technical specification.
Answered by: Russell
Date published: 2017-07-21

Hi I'm in need of a good bench power supply I ! like making models so I'm making a mini bench saw and sander would this do the job I've got a few 12v motors to use

Asked by: Rocky
Unfortunately we are unable to guarantee full compatibility for this item in your intended application I am sorry for any inconvenience this may cause you.
Answered by: Darren
Date published: 2016-08-14

Can this power a 2000w car amp if not what can thanks 

Asked by: Skinner
On this occasion Maplin do not stock a product that exactly meets your requirements, or indeed anything close enough to offer you as an alternative.
Answered by: Dominic
Date published: 2015-12-31

Can these be used to power any CB radio?

Asked by: Jason
It can be used to power any CB radio that can be operated at 13.8v
Answered by: Les
Date published: 2015-11-02

Hi, I have one of these but it is faulty, after a few minutes the voltage drops to approx. 10.5v and slowly continues to fall, any help would be appreciated?

Asked by: Craig
This service is open for frequently asked questions, In order for us to best assist you with any issue you may have with a product please contact our technical team on the details below: 0333 400 9500 or email
Answered by: Brad
Date published: 2015-10-25

Can I hook up a 12v female cigarette ligthter this so I can power a 12v tyre inflater from it..

Asked by: TonyJ
I can see no reason why not, the voltage is right.
Answered by: Russell
Date published: 2015-07-17

Is this unit capable of running both a car stereo and a separate car speaker amplifier from the one unit? 

Asked by: Volski
As long as the total load is not over 41W.
Answered by: Dominic
Date published: 2015-07-17
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