wfco possibly issues Bulk mode..Charge abilitys?

f the battery in the truck is a plain automotive battery it isn't intended to be run down like a gp/marine /RV battery

Well heres a story if you believe me..

That exide batt I have for the camper package is the same battery as my starting battery..

These have similar specs to the grp 24 sams club batts..

Here are the specs.. 70 ah.. Crazy right.

exide 78 dt



Ironically this is the first time seeing the charging rates on it.. I usually unplug the truck when charging off solar and when I run into town I assume the alt would charge it. But reading the specs Ill leave the truck plugged in to charge off solar or converter from now on...

Ref. Ah Capacity 20HR 70 Ah
Float voltage (27°C / 80°F) 13.5 – 13.8 V
Cycling voltage (27°C / 80°F) 14.5 – 14.9 V.

So float voltage per dekka ( who makes the duracells is the same range.

I use 13.8 to float my duracells. Exide says similar. I use 14.7 to bulk charge per dekka. Exide the same range..

Here is the dekka charge chart..

dekka charging chart

This is good to know..

As a side not my chevy charges from the BCM that controls the voltage of the alternator..

This truck has stages and sometimes it goes into a sulfation mode. I often see 15 volts wile driving.. normally 14.8 or so.. When the truck starts it runs at 14.3 volts for 30 seconds as a default voltage.

I never see lower then 14.6 normally.. Maybe 14.5 with headlights and A/C on..

With that said I get 14.5 volts at the 7 pin.. I may have been better off running my truck to charge the batterys back up then running the generator through the converter..

Im pretty sure its at least 8 gauge wire to the 7 pin. Its probably not even 15 ft I should be able to get 25 amps through that wire.

In fact I did run the truck for a brief period after I shut down the gen.. I did notice the gauge ( Digital app through wifi obdii port) read 14.3..

But how fast will the amps taper? Im not sure..It is a 145amp alternator.

Well thats my story...

I guess ill get my buddys amp meter and do a test of amps with the batts down 50%.. through truck 7 pin and through converter..