Update: found the connectors, they are Molex Picoflex, I have some on order, including a pre-made 200mm long one so should drop straight in. Here's a photo of the new cable fitted, plus a spare. Also painted the new brackets: www.ianjohnston.com/images/stories/IanJ/Fluke45/Fluke45_new_cable.JPEG Part = RS 342-1444
A great mod, Ian. Also a very tidy battery replacement. I must say I prefer your battery to the somewhat (over-)elaborate Fluke original, assuming there's no magic sauce in the Fluke design. Watching some of your previous videos may make a very pleasant way to spend some spare hours over Christmas. Happy holidays!
If only there was a portable form factor type DMM that takes small batteries... Those Picoflex connectors are generally designed for one-time assembly. It's pretty rare you can get them off the connector without damage, especially the SMD version - don't ask how I know 😥. You can buy them off the shelf as ribbon assemblies though so no need to crimp them yourself.
My guess would be four Hawker / EnerSys Cyclon 0810-0004 2V 2,5Ah cells in that battery pack. Could be worth measuring available space and 3d printing a suitable case?
I would not trust a IDC without the top part putting pressure on the cable. The connections in my view are iffy to start with, but once the connector is pressed together provides the much needed clamping force on the wire. You need to either find new connectors or just hard solder it IMHO😊
My other workshop is kitted out, bandsaw, pedestal drill, bench grinder etc……so it’s pretty quick to do. I just got lazy and didn’t paint the new brackets mind you!
19:17 lead-acid battery is around 2.5V per cell - way too high for normal charging, that is clearly a overcharge. That Fluke could almost take (a littly bit higher voltage) 3S LFP (lithium illron phosfate) battery pack, that should be happy with 10.2V charging voltage.
These bespoke batteries are not a good look for a company selling worldwide. They should be using more generic units and more common voltages like 12V. Well done with the battery mode, although updating to 18650 cells would have been even better.
Ian, I'm only 4 minutes in, but, does that sticker on the screen have to be where it is? Why would someone put a sticker ON THE BLOOMING SCREEN??? The very thing you need to look at and you have to look at a "warenty void" sticker..... That just urks me completely the wrong way.....
Yep, it came with it fitted. Underneath that sticker is another sticker, and underneath that one is a hole for CAL ENABLE pushbutton. Stickers now removed. www.ianjohnston.com/images/stories/IanJ/Fluke45/Fluke45sticker.JPEG
Update: found the connectors, they are Molex Picoflex, I have some on order, including a pre-made 200mm long one so should drop straight in.
Here's a photo of the new cable fitted, plus a spare. Also painted the new brackets:
www.ianjohnston.com/images/stories/IanJ/Fluke45/Fluke45_new_cable.JPEG
Part = RS 342-1444
@@IanScottJohnston a proper job as they say😀
Brilliant work Ian =D Love all the custom mounting ideas to make it fit like it was designed that way!
Excellent job, Ian. Your repair and modification videos are always interesting.
A great mod, Ian. Also a very tidy battery replacement. I must say I prefer your battery to the somewhat (over-)elaborate Fluke original, assuming there's no magic sauce in the Fluke design. Watching some of your previous videos may make a very pleasant way to spend some spare hours over Christmas. Happy holidays!
Thanks!
If only there was a portable form factor type DMM that takes small batteries... Those Picoflex connectors are generally designed for one-time assembly. It's pretty rare you can get them off the connector without damage, especially the SMD version - don't ask how I know 😥. You can buy them off the shelf as ribbon assemblies though so no need to crimp them yourself.
Have ordered both the conns themselves and a pre-made 200mm one.
Part = RS 342-1444
www.ianjohnston.com/images/stories/IanJ/Fluke45/Fluke45_new_cable.JPEG
Mr. Ian Scott Johnson "Master Engineer", well done sir!
Wow very nice job. I bought the Fluke 45 in the 80's and still have it. The display is bright and looks new. I liked the dB mode.
Love the test equipment videos!
I hope you're well. Have a great Christmas.
Good job Ian, nice bit of sheet metalwork.
Nicely done! Thank you Ian Scott.
Nicely done, and a cool meter !
Christmas Cheese!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
@@fredflintstone1 MerrySQUEAK! to you and yours !!
My guess would be four Hawker / EnerSys Cyclon 0810-0004 2V 2,5Ah cells in that battery pack. Could be worth measuring available space and 3d printing a suitable case?
Very nice work!
I would not trust a IDC without the top part putting pressure on the cable. The connections in my view are iffy to start with, but once the connector is pressed together provides the much needed clamping force on the wire. You need to either find new connectors or just hard solder it IMHO😊
Looking for new connectors, got be available.
Squeak ! on the other channel we met not long ago I agreed with your Idea and got a telling off Lol!
Molex Picoflex connectors - on order.
@andymouse well you can be a very naughty mouse, agreeing with me can have it's down sides,😅🤣
@@TheEmbeddedHobbyist LMAO!
@6:35 I must be lazy, I would have just double side taped the battery to the chassis LOL.
My other workshop is kitted out, bandsaw, pedestal drill, bench grinder etc……so it’s pretty quick to do. I just got lazy and didn’t paint the new brackets mind you!
@@IanScottJohnston wouldn't the old bracket work with just a few new holes ? Pretty much the right shape already..
I did try orientating it with a view to re-use but it wasn't having it......
Thanks again
I would wonder if that cut resistor lead shows on the wiring diagram ?
It would have been perfect if the cable had been replaced. Great job.
New 200mm cable on order c/w Molex Picoflex connectors fitted......should drop straight in.
19:17 lead-acid battery is around 2.5V per cell - way too high for normal charging, that is clearly a overcharge.
That Fluke could almost take (a littly bit higher voltage) 3S LFP (lithium illron phosfate) battery pack, that should be happy with 10.2V charging voltage.
I was thinking the same. 10v on a four cell lead acid seems much.
Original battery pack looks like 4 RS Cyclon cells to me.
These bespoke batteries are not a good look for a company selling worldwide. They should be using more generic units and more common voltages like 12V. Well done with the battery mode, although updating to 18650 cells would have been even better.
Ian, I'm only 4 minutes in, but, does that sticker on the screen have to be where it is? Why would someone put a sticker ON THE BLOOMING SCREEN??? The very thing you need to look at and you have to look at a "warenty void" sticker..... That just urks me completely the wrong way.....
Yep, it came with it fitted. Underneath that sticker is another sticker, and underneath that one is a hole for CAL ENABLE pushbutton. Stickers now removed.
www.ianjohnston.com/images/stories/IanJ/Fluke45/Fluke45sticker.JPEG
I would just put a couple of 18650's in it and call it a day.
Lithium? That's horrible!