NRALIFR wrote:
Yes, theyโre excellent points. Right up until you hear yourself saying โUh, it shouldnโt have done thatโ.
I had a long career working on computers myself. I only put my full trust in automotive control modules when the vehicle is sitting at home in my garage.
:):)
Buying a "jump box" for a "just incase" is of zero help when you FORGOT to CONTINUALLY RECHARGE said jump box.
You VEHICLE automatically recharges it's own battery(ies) once you start it. MUCH more "dependable" than remembering some jump box tossed under a seat for a few yrs.
Ignoring the SIGNs of your starting battery going south is also not all that smart. They DO give plenty of warnings that they have lost capacity and one CHOOSES to ignore it just because they have that partially discharged or completely dead jump box tossed under a seat that they forgot about for several yrs.
You are also not thinking of a secondary issue with newer lithium jumpboxes.. Lithium battery tech does not like to be charged or discharged in very cold weather.. The BMS on the internal battery will refuse to allow the jumpbox to start your now dead vehicle in sub zero weather.. Now just how good is that?
Your standard off the shelf auto starting batteries have no such restrictions..
Perhaps it makes you feel warm and fuzzy to think a little $80 jump box is going to start a diesel engine which is equipped with not one but TWO mammoth sized FLA batteries.. But that is nothing more than folly and you won't realize it until you accidentally find yourself with a totally dead useless jumpbox.
The BEST plan is to plan ahead with KNOWN GOOD batteries and never, ever use the starting battery as additional capacity for your TC or trailer..
If you have a TC, there ARE plenty of available places to stash extra batteries on the truck, between the wheel wells is a vast space of wasted area that can hold quite a lot of batteries.. There is a lot of space under the truck on the outside of the frame rails which lots of batteries can be stashed..
You really don't want to mess with a jumpbox when it comes to Diesels, not enough juice to light the glow plugs enough or spin it fast enough and you can find yourself in a world of hurt when it hydrolocks.. Heck even too low of battery voltage on some Ford Diesels can prove disastrous to the FICM adding more insult to injury.
Go ahead and feel warm and fuzzy with that jumpbox as your protector.