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400mm Automotive Current Standard Blade Type Tester

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Quoting product code: N48CY


About this product


  • Identifies the circuit draining your car battery
  • Suitable for standard blade types
  • Provides an easy-to-read LCD display of the circuit's performance

Product overview

• Identifies the circuit draining your car battery
• Suitable for standard blade types
• Provides an easy-to-read LCD display of the circuit's performance
• Simply plugs into standard blade type fuse holder
• Measures up to 48V/ 20A
• Cable length: 400mm
• Weight: 68g
• Dimensions: 86(l) x 37(w) x 28.5(d)mm
• 12V A23 type battery (spares available, Order Code: JG91Y)

Rated 5 out of 5 by from Great For Caravan and Car Testing Bought this some time ago and used it mainly for caravan battery capacity testing. Very useful but suggest you remove or isolate the battery if not using for some time as the (slightly non-standard i.e. not AAA) will go flat
Date published: 2016-04-06
Rated 5 out of 5 by from Did the job I bought this to check the circuits in our caravan. It worked fine - but a fuse gripper would have been a useful item to pack with it, I did not want to grub around under the footwell of the car to get one out. I would have preferred to buy just the leads so that I could have connected them to my multimeter but they were out of stock at all local stores and online.
Date published: 2017-07-11
Rated 5 out of 5 by from good purchase Very good. Have used it several times and it works well.
Date published: 2017-04-22
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Do you know what accuracy this ammeter will read to? 1 or 2 decimal places? Thanks

Asked by: Martin
2 decimal places
Answered by: Les
Date published: 2017-01-04

Will the display stay on once it has been switched on, or will it automatically switch off after a while ? I want to be able to leave this in a locked car and look in the window over an extended period to see what current is being drawn.

Asked by: Jams
It displays a result when the button is pressed but this goes off after a short while.
Answered by: Les
Date published: 2016-11-03

Does the tester come with battery, because the one I just bought has no battery.

Asked by: geoff 61
This is not provided with the item.
Answered by: Dominic
Date published: 2016-09-19

I recently purchased this devise to test the circuits on my caravan as the battery runs down very quickly even when everything is turned off I understand how to use the devise but i am unsure what readings i am looking for if a fault is present

Asked by: Chris
This service is for frequently asked questions and does not allow two way communication, In order for us to best assist you with your technical issue please contact us on the details below: 0333 400 9500 or email
Answered by: Dominic
Date published: 2016-07-06

I have just purchased this item , but on opening found that the probe has provision for a blade fuse which was not supplied neither any mention of what amperage fuse to use.

Asked by: Boa0
The probe isn't fused, that is where you place the fuse from slot you are testing. You take the blade fuse out of it's slot and place it into the probe. You plug the probe into the slot the fuse came out of. This then allows you to test the volts/amps draw going through that fuse slot. Please make sure you do not exceed the stated maximum for volts/amps.
Answered by: Les
Date published: 2016-06-14

Does the car nned to be in sleep mode to test fuses ie with doors and boot closed, 

Asked by: Johnb
Yes if you are looking for a power drain.
Answered by: Dominic
Date published: 2016-02-08

A caravan with 80wt solar panel &10amp blade fuse fitted.  Can this 'gadget' be used be used to check the power from Solar Panel OUTPUT as battery struggles winter days to keep alarm & tracker with sufficient power. Trying to check if working properly.

Asked by: Bernard in Tring
Unfortunately we couldn't guarantee this would be suitable as it is not the intended purpose of the unit. If you are just looking to check the output from the solar panel a standard multimeter connected to the battery clips of the panel will allow you to check.
Answered by: Gareth
Date published: 2016-01-22

If left plugged into the fuse holder for an extended period of time, will it measure/record the peak draw on that circuit in such a way that makes it possible for you to work out what the peak was without having to sit and watch it?

Asked by: STR675
I am sorry but the item in question does not support use in your intended application.
Answered by: Dominic
Date published: 2015-10-29
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