PROPAC CABLE NX problem

This is a cable that gave me problem.

When I got my PROPAC PB960, I opted for the Nikon version, that's the cable is for Nikon speedlight, in my case it's the Nikon SB-800.

But that cable was iffy, sometimes it worked but most of the time it didn't.  It took me quite some time to notice that.  Because, I didn't use the SB-800 often enough to notice.  The SB-800 requires 4AA batteries inside even when it's to be powered by the PB960 (the 4AA is then used for the display and other functions I guess), meaning when I am on TTL and has enough ambient and it doesn't draw 100% power I wouldn't notice the difference even it's coming off from the 4AA.  But finally I did notice the slow cycling time when the 4AA batteries depleted its power.

I don't have have other Nikon SB-800 flashes or other Nikon flashes that accept external power laying around for me to test if it's the flash or the cable or the pac unit.  But I figure in all likelihood it's the cable.  I hope it's not the PB960 itself of the SB-800.  The pac has no problem passing power to my Sunpak 120J with another cable at all and the SB-800 seems work fine.

Finally I got a hold of my friend who also owns a Nikon SB-800.  Same problem.  Sometimes it works but most of the time it doesn't.

I took a chance I ordered another NX cable on eBay.  I could have bought some quantum or paramount cable which are supposedly better made but more expensive even used, about $50 each.  The PROPAC PB980, at least the power cable is based on the quantum spec, that's my understanding.

Actually I wrote to Godox via email about the cable but of course nobody replied.  I also wrote to the original eBay seller I got it from with the pac, but to no avail.

The eBay cable came, it's practically new.  It is somewhat different from the one that came with the pac.  The new one has a shorter neck and has no sleeve and fits much snug than the original.  The original one is by no means loose when plugged into the SB-800.

no good cable with the sleeve removed just to show the neck

D810 with the NX cable attached that works.

This NX cable doesn't come with a sleeve, the 3 insertion prong is the same length though.  This one works.

SB-800, the left most hole has no protruding pin there, it's not broken it's just like that.

No good NX cable with the sleeve at the neck

the cable has 3 prongs like so.  The cable that works is very tight.  So maybe it's better made more on spec.

With the new cable, the SB-800 actually draws power from the pac as the cycling time is much faster even when the 4AA is low in juice.  The ready light on the Pac actually turns itself off as it recharges itself between flashes--I was doing a full power 1/1 manual flash on the SB-800 to make sure maximum power is used.

I hope the cable stays good.

I saw on YouTube there were similar issues with the cable, and some people suggest to turn on the pac then the flash unit in that order.  I did but still iffy.  So my experience is the cable is faulty perhaps not up to spec.  The other cable that works has some minor changes as it fits much tighter.  The absence of a sleeve probably has nothing to do with it, it could be even because it's a used cable but unlikely as the neck is much shorter to accommodate a sleeve like the original cable that I have had.

Godox or God Ox PB960, Sunpak 120J, Nikon SB-800

The Chinese name is actually literally God Ox.  What a strong brand.

As a owner of two good old Sunpak 120J's, I always want some power pack.  Even I have the original pack in form but not in substance.  I use some rechargeable battery to power the pack.  It's a bit cumbersome I have a separate branded charger to charge the battery and when fully charged I put it back into the holder.  You probably don't know what I am talking about.  I am too lazy to take any pictures.

Universal Smart Charger.  Not just phone could be smart.

Not all sync cords are created equal.  Some are obviously better.  The one on the right is better, which is a Paramount cable by the way.  The one on the left is the original Sunpak cable that has bad contact with the PC outlet on the D810 camera.  Bad.  I think the locking one is the best but I have yet to try one.

My SB-600 is kind of broken, the battery door has bad contacts when I don't use reputable branded batteries.  I think there is some play to the battery door which can result in bad connection with some batteries.  The hot shoe is cracked and the knocking pin is ruined.

And so I bought a SB-800 which is similar but better than the SB-600.  It accepts external battery pack.  It provides more option and plays.

I did some research and in the end, I bought the Godox PB960 pack with a cable for Nikon.  The connection as I understood it is a Quantum cable connection.  Though I can't find any affirmation online that the Godox PB960 can work with the Sunpak 120J I decided to give it a try.  Lucky me I was able to find a Quantum CS4 cable connecting the PB960 to the 120J.

The items arrived and everything just works.

Moving on to some other distractions.

Recap: now I can power two 120J with external powerpacks which definitely provide more flashes and much faster recycle time.  Or I can shoot my SB-800 using high speed sync with instantaneous recycle time, almost.

UPDATE:
7/23/2018
Something is not right when the power pack is attached to the Nikon SB-800.  Initially I thought it just worked.  But I guess it's iffy actually.  Because the SB-800 needs 4AA even when it's supposed to be powered by the pack, so even when the SB-800 is not getting the power from the pack I wouldn't know or it wasn't obvious when the AA are in good power.  Many months ago when I knew the 4AA were running low and then it became apparent that the pack was not powering the SB-800.
My feeling is it's the cable or the ProPac NX cable.  I watched a YouTube video which was similar to what I experience.  Though initially I thought if I power the ProPac and then the SB-800 in that particular everything would work.  It does work but then it is iffy.  Sometimes it works but sometimes it doesn't.  I tried 1/1 manual mode so the SB-800 which uses the most power and more noticeable in the cycling time when it draws from the pack or when it draws from the 4AA.  When the SB-800 actually draws power from the pack, I can see the cycling time is faster and the pack's red ready light actually goes dark for a second when it's getting ready for the SB-800.  When the SB-800 is drawing power from its own 4AA (even when it's attached to the pack), the cycling time takes much longer and the ready light on the pack doesn't goes dark at all.
I am debating if I should buy a quantum cable or paramount cable or simply take a chance with another Godox ProPac NX cable.  There is a possiblity that the SB-800 is the culprit but I doubt it.