CTEK Polar hookup for Prius c

New guy here, 2014 Prius C that's had the starting battery replaced several times, last time w an OEM one, less than a year ago, still needs a jump a lot because we don't drive much. (Got a Clore JNC770R, makes the car usable!) Sick of that, and want it to be easier for my wife when I'm out of town, so I just bought the CTEK (56-958) MUS 4.3 POLAR, which so far seems to be working great.

But, I'd like to make connecting and disconnecting it easier, again a lot for my wife when I'm not around, something she can just plug in instead of messing around under the hood, opening the power box, etc. However, the ring connectors on the "Comfort Indicator Eyelet" (wacky name) are too small to fit the Prius C's battery posts, and I'm trying to figure out an alternative.

I haven't so far found similar size ring connectors with a lug opening that big (10mm or 7/16" I'm guessing), except some huge copper ones from NAPA (NW 785911) that are built for much larger wire, max wire size 2/0 ga. I can cut off the original ones and solder the wires to these, but they're MUCH smaller, so there won't be any strain relief at all.

I've emailed CTEK about this, haven't heard back, yet, hopefully, but who knows how responsive they'll be.

Any great ideas?

Thanks.

 

Maybe this should have been obvious, but the CTEK pigtail ring connectors aren't supposed to go around the battery posts themselves, just around the bolts that attach the existing wires to the posts. Got mine hooked up that way today.

Two beefs:
- The metal of the ring connectors on the pigtail is really cheap and thin, wouldn't surprise me if they're fragile.
- The ergonomics of connecting and disconnecting are different than popping the hood, fuse box and connector cover open and clipping in there but it's not wildly more convenient.
a) There isn't a really great place to put the pigtail so it's out of harms way but accessible.
b) You have to crack a window to run the cable to the inside of the car.

Nothing fatal, just not great to use, but it seems to be keeping the battery happy so far.

 

Mendel, can you explain a bit more how you make the positive connection? I think I know the thick white wire you mean inside the fuse box, but I don't see a good way to connect the CTEK to it.

 

This is what the fuse box looks like in my 2014 Prius c. White wire is pretty obvious, but I don't see a ring connector on either end.

 

Whatched the video, I see.

Not sure if my wife would be happier opening the hood and connecting to the pigtail there, or dealing with the pigtail being somewhat in the way in the back seat.

 

The posted video about removing the battery shows a clear plastic protector over the whole battery, and protective caps over the terminals.

My 2014 Prius c has neither of those. The battery was already replaced, by a local shop I more or less trust. I doubt they just got rid of those without asking or saying anything, and the car wasn't new when it came to me.

Are those pieces necessary or advisable?

 

But I remembered wrong about caps over the terminals.
There is a plastic cover over the whole battery, which I've never seen on mine, but I didn't get it new, and the battery has been replaced (with one from Toyota) while I've owned it.

I doubt that cover matters, which is what I'm asking.
Does it?