Replacing battery

[kvp]

Hello all,
This modern 2022 Ram 3500 has so many electronics compared to my 1997 2500 I'm wondering if I need to do anything to keep power to systems when changing the battery.

 

[Brutal_HO]

Gas or diesel?

Diesel has 2 and you can swap one at a time if you're careful AF, though the IBS might get mad and take longer to settle.

Worst case, loss of power can cause apps a while to return to function on the radio.

 

[kvp]

Gas or diesel?

Diesel has 2 and you can swap one at a time if you're careful AF, though the IBS might get mad and take longer to settle.

Worst case, loss of power can cause apps a while to return to function on the radio.

gas, I somehow and to this day don't know how killed the battery a couple years ago. After jumping I found several things inop till I'd driven awhile. Hence my question.

 

[flan]

Whatever goes haywire will come back to life in a day or less if you disconnect with no backup source. So either way you will be fine.

 

[whitexc]

Sometimes it’s almost better to let the truck sit disconnected for a bit(30 mins or so) than to try to hurry and get a new battery back in and connected. It can be nerve racking with all the electronics our vehicles have these days.


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[JimKIII]

I replaced my battery last year and didn't do anything different than if I were replacing one in older cars with zero electronics. No problem at all with anything; presets, etc.
The only difference is removing the block of connectors attached to the +post, but that's not difficult to do at all.
I assume the 3500 is same as the 2500 as far as battery removal.

 

[ShadowJ]

I just replaced both my batteries and no issues what so ever with presets or anything else.

 

[Osse]

Disconnect the negative cables on both batteries, driver side first, then passenger side. Wait 30-40 minutes. Then disconnect both positive cables. This allows systems to go into power-out/reset mode and the batteries can be changed out without issues.

Others will say "I didn't do that and I had no issues," and that's probably so. But it's currently the recommended way to proceed in order to decrease the chances of having problems.

 

[kvp]

Disconnect the negative cables on both batteries, driver side first, then passenger side. Wait 30-40 minutes. Then disconnect both positive cables. This allows systems to go into power-out/reset mode and the batteries can be changed out without issues.

Others will say "I didn't do that and I had no issues," and that's probably so. But it's currently the recommended way to proceed in order to decrease the chances of having problems.

One battery, gasser. Still apply?

 

[Osse]

The instructions were for diesels, but I don't see why they wouldn't apply to gas engine trucks as well.