Parasitic current draw on tow vehicle
My 2002 Honda CRV seems to lose its battery charge if it sits for a couple of days. The battery has tested good at both NAPA and at Autozone. I tried testing for draw with my cheap VOM by undoing ...
Forum Discussion
wa8yxm wrote:
Sounds like either the VOM is bad or the operator (you) is... Yup that can happen.. I have multiple VOMS and sometimes get confused as to how they work. (No two alike type thing)
Suggestion is a Jump Starter. they make two types (I of course have one of each) one is a Lead Acid (AGM) battery in a big HEAVY box. about 25 Amp horus usually with battery leads Some of these have air compressors, work lights and other features.. NOTE when hooking up it is suggested the NEGATIVE (Black) wire NOT go to the battery but rather the block or other unpainted metal part (This is for US cars with Negative ground.. If by some strange chance your car is positive ground that's the RED wire).
The other is a LI tupe... way lighter. 10 AH but about the same Kick Start power.
I use, or rather used, the big one as a "Portable car" for powering 12 volt stuff that plugs into the accessory outlet.
:R
So, the "fix" is to ignore and bypass the problem with a portable jump pack?
:E
Something draining a car battery in a day or two is not something one really should ignore. It is not normal and depending on what is draining the battery could very well end up with the OP stranded somewhere at the least and at the worst 100% charcoaled vehicle and or home.
Some things stay hot (not switched off with ignition), silly things like Ford had with the pressure switch located on the Master Cylinder which if the seal failed allowed brake fluid to enter the switch and cause a fire type of catastrophes have happened..
Brake switches do go bad, modern versions have multiple switches which do fail in odd ways..
