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Not sure if our cig outlet deactivates after the car shuts off. All my cars use a BMW smart charger connected to the battery. I prefer those types as they only send ''juice'' as required. Never used a cig outlet type before however.
I use a Battery Tender as described by SuperGT.
The BT comes with a wire that you can connect to the battery and I bring the connector to under the trunk carpet.
So when I park the car, I connect the tender and it automatically keeps the battery charged.
I leave the trunk lid cracked open with no issues.
Works like a charm. The BT can be purchased in Amazon and I believe I saw them at HD or Lowes.
Thanks Puertex, hoping it was easy like the Porsche.... directly into a cig plug.
No, it won't work like the Porsche. I used a battery tender that had alligator clips and hooked it up by pulling the cover off the fuse panel under the hood..
There is a red cover that flips open and you hook the positive lead to it and the negative lead to a grounded bolt. I used a Yuasa YUA1201000 charger.
^^^^Again, I know power is cut to the power receptacles when the ignition is shut off, unlike some other cars. But, why not just hook the charger up to see if perhaps it just might work. Certainly no harm in trying.
Caution - I'm not sure how our Lexus are wired but many new vehicles (including my BMW K1600 motorcycle) have their power recepticals wired/monitored by the can bus. It basically monitors the current draw on the receptical and keeps it on for some fixed time after ignition is turned off. it can also kill power to the outlet if current draw is too high. I would not advise trying to charge/maintain the battery with these types of systems. Again, not sure if the LC500 is wired this way but since the battery is so easy to acesss, I'd put a fused pigtail directly to the battery and be done with it.
Caution - I'm not sure how our Lexus are wired but many new vehicles (including my BMW K1600 motorcycle) have their power recepticals wired/monitored by the can bus. It basically monitors the current draw on the receptical and keeps it on for some fixed time after ignition is turned off. it can also kill power to the outlet if current draw is too high. I would not advise trying to charge/maintain the battery with these types of systems. Again, not sure if the LC500 is wired this way but since the battery is so easy to acesss, I'd put a fused pigtail directly to the battery and be done with it.
I've actually owned the vehicle for about 2 years and can tell you, the way I said to hook up the battery tender works without causing any damage.
I've actually owned the vehicle for about 2 years and can tell you, the way I said to hook up the battery tender works without causing any damage.
Yes, the way you posted is also correct as thats the jump post and is connected directly to the battery. My reference was to the power port on the interrior of the car, old reference to the "cigerette lighter" in the console.
I am adding another battery tender problem to C00p5LC500's post. I live in Michigan and winter in Arizona and for the winter of 2018/2019 we kept the 2005 RX330 garaged in Michigan with a battery tender connected as shown in a previous post above. On return 4 months later the battery was dead. Therefore for this past winter, thinking that I may have had a defective battery tender last time, I purchased a new one. On return again on May (5 months away) the battery was again dead. Would anyone here had what may be causing this problem? I have used battery tenders many times on different motorcycles stored for the winter and never had a problem. Also, when attaching the battery tender, both times, I get a green okay light showing all is good.
The 2005 RX330 is my wife's car that we bought new with now less than 70,000 mikes on it.
The end of the riding season here in Buffalo, NY is only a few months away. It will be the first time I've had to store a bike for the winter (just got my first bike this year). I've heard of battery tenders, but I don't understand what they are, or if I really need one. Can someone explain it like I'm five, please?
It's a device that plugs into a standard AC outlet and transfers power in the form of amps to your 12 V battery to keep it operational over long periods of inactivity. Battery Tender battery chargers are essential if you have seasonal vehicles that sit for months without being used. It is not like a battery charger that keeps charging even after the battery is at full charge. With a battery tender once your battery is fully charge is basically turns off and will only turn back on when your battery needs a little kick to get back to full charge.
[QUOTE=C00p5LC500;10075558]Can I hook up a battery tender to my 2018 Lexus LC 500? Do I have to disconnect the battery? Is there under hood access or do I have to go through the trunk?
I have a Lexus Battery Tender for both the RCF and the LC 500. On the LC 500 you do not have to disconnect the battery but you will have to hook it up in the trunk. It took me about five minutes to hook it up to the LC 500 and about five minutes on the RCF. Lexus approved Battery Tender
I like the CTEK MS 7002. It has a dozen lights that indicate what's happening, and it's always returned automatically to normal mode from house power outages.
