I am looking to find out what size fuse is used in a Coleman power mate 18v drill charger input 120vac 60hz 46w
Output 20.5v 1.4a 28.5va.

 

Is the fuse on the input or output?
For the output a 2A fuse will do the job.

 

Is the fuse on the input or output?
For the output a 2A fuse will do the job.

Here is a pic

 

The diodes on the bridge rectifier are rated at 3amps, so i guess a 2amp would be safe..

 

The diodes on the bridge rectifier are rated at 3amps, so i guess a 2amp would be safe..

I put a 2 amp 250 v fuse in it charged 1battery when I tried to charge the second one ( about 6 hours later) the charge light went out as soon as I put the battery in.

 

Well it works then, unless the second battery is faulty...

 

I am looking to find out what size fuse is used in a Coleman power mate 18v drill charger input 120vac 60hz 46w
Output 20.5v 1.4a 28.5va.

It is usual to find the fuse No. stamped on one end cap, look the number up and it will indicate the nature of the fuse, FB. SB, etc.
Max.

 

Well it works then, unless the second battery is faulty...

I have 4batteries no power when I put the other 3 in

 

It is usual to find the fuse No. stamped on one end cap, look the number up and it will indicate the nature of the fuse, FB. SB, etc.
Max.

It is 2amp 250 volt

 

I have 4batteries no power when I put the other 3 in

So it can't be the charger then, if works on one battery and not the others, are they all for that charger?

 

So it can't be the charger then, if works on one battery and not the others, are they all for that charger?

Yes

 

Only thing i can suggest is the cells are faulty, there doesn't seem to be any intelligence on the charger to detect faulty cells, only a third pin for temperature sensing, are there any chips on the underside?

 

Only thing i can suggest is the cells are faulty, there doesn't seem to be any intelligence on the charger to detect faulty cells, only a third pin for temperature sensing, are there any chips on the underside?

No

 

Does it still charge the first battery correctly (after you've discharged it a bit, that is)?

 

Does it still charge the first battery correctly (after you've discharged it a bit, that is)?

I put the fuse in and it charged the first battery fine then this morning I tried the second battery and 2seconds after I put in 2nd battery the charge light went out took that battery out tried first one again no lights on it I assumed the fuse blew again

 

OK. Can you check the fuse?

 

OK. Can you check the fuse?

I am at work right now,its at home

 

Can you take a picture of the trackside, and the semiconductor on the heatsink and a closer focused shot of the components on the pcb, then we can work out the circuit diagram.?

 

Can you take a picture of the trackside, and the semiconductor on the heatsink and a closer focused shot of the components on the pcb, then we can work out the circuit diagram.?

 

I hope this will help