2020 TRDOR Eating OEM Batteries

That's a helpful video too.
Nice! And good to know another path.

 

Well, did a proper parasitic battery drain test, per the Toyota documentation linked earlier. Measured at a solid 15mA, well within spec.

Was also able to test the charging current, and found a pretty big "aha". Per that same document, measured current at ~2,000 RPM with no accessories on was ~6-7 A. Turned on every accessory I could find (heated seats, hi-beams, A/C, radio, etc.), and the charging current...stayed at 6-7 A. Going to be bringing it in to the dealer to have them investigate a possibly faulty alternator. I'm not looking forward to having the conversation with them about aftermarket battery terminals! I can't imagine how these terminals would have caused a problem with the alternator; I was extremely careful not to short or ground anything out when replacing the terminals themselves, but we'll see how it goes. I did at least visually inspect the two alternator fuses (does anyone know the difference between the 120A and 140A fuses?), and they looked alright, but I didn't go through the effort of taking them all the way out.

 

Well, the dealer has had my truck for a week now, and they can't seem to find anything wrong. They aren't able to tell me any of the specific tests that they've done though, but they're saying that now Toyota wants to send out one of their own techs sometime in mid-April. Seems like an admission that at least something is wrong. Frustrating that it's taking so long though.

 

not sure why U mounted an accessory batt kit

shops & dealers are VERY reluctant to work on someone elses mistakes

then bail them out ...................

a near DEAD batt can show adequate ‘ voltage ‘ on a meter

yet NOT perform prperly under ' Load ‘ nor have sufficient ‘ cranking amps ‘ !!!!

voltage is NOT a proper nor good indicator of a battery

 

I’m perfectly aware of the the relationship between a battery’s voltage and its health, or lack thereof. My point is that the charging voltage is indicated as correct (~14v), but the charging current seems off. But thanks for your condescension about my choices of aftermarket battery terminals, which isn’t exactly a “accessory batt kit”, and lack of any other useful information.

 

no condescending statement

U are Still In error !!!!!!!!

charging voltage is provide by the alternator ....................thru the rregulator

what the heck would U expect to see on the meter..........good batt or batt