2amp charger on batteries overnight to make it to autozone in the morning?

[SHOZ]

When GNB made Motorcraft batteries back in the 80's were made with a silver alloy battery for the hot climes.

 

[Sumboodie]

That's an oreillys brand

Yes. Schucks/oreilly, same place. Schucks is just the old name. They switched maybe 6-7 years ago.

 

[Sumboodie]

I am convinced that battery tenders make a big difference in longevity. I have a 2018 BMW M550iX with a main and aux AGM batteries. I don't drive it a ton (only 16k miles) so I plug it into a Battery Minder whenever it is parked and both batteries test well over their CCA rating after over 6 years of use.

Same on a 2001 BMW 540. I installed a H8 Group 49 AC Delco AGM (made by Varta) in 2019. Since the pandemic I got in the habit of plugging it into a Save a Battery tender from Granite Digital at least two or three times a week overnight. And that battery tests at over 1000CCA after over 5 years of use.

I just unhook them or shut off the master switch if it's going to sit a while.
Well, aside from a few that don't drain batteries, like my 90 F600. It can sit for a year and fire up like it was just turned off.

 

[The motor guy]

Yes. Schucks/oreilly, same place. Schucks is just the old name. They switched maybe 6-7 years ago.

I've heard they're pretty good though.

 

[Sumboodie]

I've heard they're pretty good though.

Haven't had great luck with group 65s. Tempted to switch to.
group 31s, even if it means frame mounted boxes.

 

[The motor guy]

Haven't had great luck with group 65s. Tempted to switch to.
group 31s, even if it means frame mounted boxes.

I'm not really familiar with group size, but those group 24 interstate batteries at academy for $100 looked the same size as the 65s in my truck that autozone wants $230 each for the duralast brand

 

[Rygrego]

I don't think it's the batteries though if they show 12.7

A battery can show full charge and still be bad. The real test is not just voltage but also how well it handles a load. I've seen cases where the battery shows full and falls flat on it's face when cranked.

 

[f355spider]

I just unhook them or shut off the master switch if it's going to sit a while.
Well, aside from a few that don't drain batteries, like my 90 F600. It can sit for a year and fire up like it was just turned off.

I've been told by a few technicians (and this is car dependent) that many newer cars store idle parameters, and engine running history and disconnecting the battery erases this, and means the car goes to default mode until it can restore that history through a lot of driving cycles (let alone radio presets and clock). They recommended to use a battery tender instead...it was exactly the situation they were made for. But sure, on older cars it is not a problem at all. Many older Ferraris (80s and 90s) have a have a battery switch for this purpose.

 

[Sumboodie]

I've been told by a few technicians (and this is car dependent) that many newer cars store idle parameters, and engine running history and disconnecting the battery erases this, and means the car goes to default mode until it can restore that history through a lot of driving cycles (let alone radio presets and clock). They recommended to use a battery tender instead...it was exactly the situation they were made for. But sure, on older cars it is not a problem at all. Many older Ferraris (80s and 90s) have a have a battery switch for this purpose.

Dunno, newest i have is 2008.

Don't use radios or clocks in the vehicles that have them, so no worries there.