We have been "Fighting" Battery & Memory problems since we got The Van.
Here's our latest "Electrical System" story.
Autozone - Duralast Battery - Frame #78 - Built-in Handle
About 2 years ago, we bought a new Battery for The Van - 1992 Astro / Gen I.
Left the Quick Disc. / Positive Battery lead connected and forgot for about 3 mos.
Worse thing we can do to a Battery, short of igniting it with C4, is to let it sit -
slowly discharging for MOS.
I had pneumonia, on top of emphysema... it took a while to regain strength, willpower and most of all...
Ambition.
One of the last things I did, was take a few pics of what I did - so... here goes.
And remember: Captions go at the BOTTOM of published photos, etc.
PUBLISHING INDUSTRY STANDARD.

3100 Batt swap Set up
A few things in this pic: The "Neglected" ( and Expensive, when not used ) Quick Battery Disconnect.
NOTE: I will talk of this "Lightly / Unused" item in a later Post.
Also in the pic - the RED Stereo Amp Fuse and the Harbor Freight Light ( handiest flash/work light EVER )

3102 Batt swap Set up 2
Other than the 5/16" wrench I used to tighten the NEG. Battery Lead to the Battery, the only tool size used was a 1/2" socket and a deep well.
I tried ( 2 ), then ( 3 ) 3" extensions to fit over the top of the Batt.

3108 Batt POS & NEG disconnected
I always used a 5/16" wrench to pull the Neg. Lead wire off the Battery - took me 10 years and 2 Batteries to learn the:
"Remove the Neg. Lead from the Radiator Support" instead. Much easier, cleaner and way less Hassle / Sparks.
Here we see where I have laid it by the Hood Support.

3110 Batt Back Clamp & socket
Yes, there is enough room for a hand and a socket / extensions to get back in there, behind the Battery.
This view may also show that the Clamp is (2) sided
Loosen the screw till just before you run out of threads.
Push the Clamp back away from the Ledge "Built In" to the Battery.
Use the "Built In" Handle to lift the Battery out.

3114 Batt Tray & Hrdwr
Seems the "Rust Stopper" was on strike the year I used it on this Tray.
Also disc'd. the E-Brake Cable and rerouted it outside the Tray to allow R & R of IT.

3116 Left Batt rdy for Hdwr
Time to move my Battery Hardware over to the new Battery. 5/16" & 1/2"

3118 Batt Neg Lead & Tools
Well, that lead is loose - S-K 5/16" wrench.
The other tools used, in the background: 3/8" ratchet, (3) 3" extensions, 1/2" socket and a deep well 1/2".

3120 Batt - MISSED Front Clamp
Not sure how common this is... but... when I put the new Batt. in, I missed engaging the "built-in" clamp.
The Battery Leads held it so still and secure, did not even notice...
And it is not the first time I missed it

3124 Batt Leads hooked up
1/2" Hardware for the Neg. Lead and the Black knob for the Pos. Quick Disc.

3126 Batt clamp nut & Magnet
Thru the years... I have tried numerous methods of holding hardware within a socket or whatever.
The magnet on the outside was not trusty, nor was the one stuck up inside for the nut to sit against.
Have also used hvy. grease when handy.
Wrapped the outside edge in light paper... held till it could not anymore... success.
Again, could have used my hand. Flipped the clamp over / less used side, washered and tightened...

3130 Batt clamp tool clrnc
Yeah, 6" of extension was a tad short.
Now, to deal with Aut0z0ne and their Batt. return time limit restriction.