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12v battery maintenance


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I bought a similar one from Lidl. Ultimate Speed brand. Like Auto XS. It’s a superb bit of kit. Here are some photos and the model number. You can also find these on eBay too. Useful for the little 12V Battery located in the Auris Hybrid boot. Hope this helps someone. 🙂👍🏻

4A3A9AD6-81BE-4727-B1E6-4500FAE2793D.jpeg

AAFFAADA-A858-4C91-9298-C6ABF98A3D6C.jpeg

983DE7B6-B2F3-4E67-B997-657316354B22.jpeg

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Good price, excellent product with proper microcontroller. The cutoff voltage is pretty high, about 15V vs typical safer product like NOCO genius2 14.3-14.5 V.  LIDL/ALDI charger will do trickle charging when the voltage is drop below 12V at maximum charging 0.7 A after the fully charged was ever reached. More expensive NOCO charger will still trickle charge at max 5 A when the voltage drop below 12V, not 0.7 A. 

Lidl charger is much better than any unknown brand 10A charger in Amazon

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we should have a page,odd things about hybrids. you could leave your car unlocked,but safe. How much stuff is live ,in ready mode,[parked up I mean] a drain on the 12 v Battery,leaving it flat.

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On 11/15/2022 at 9:40 AM, loz8 said:

we should have a page,odd things about hybrids. you could leave your car unlocked,but safe. How much stuff is live ,in ready mode,[parked up I mean] a drain on the 12 v battery,leaving it flat.

For the Auris2, All the electronics turned off after about 15 minutes. Even if you forgot to turn off the interior lights, they will be off when the car goes to sleep mode.  There is no difference if the smartkeys are active or not.   If you do not leave the car more than 2 weeks, you can leave it as is.  If you leave the car more than 2 weeks, removing the D/C Cut in the Fuse box helps and much easier than removing Battery negative terminal. 

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On 11/25/2022 at 4:34 PM, AisinW said:

 removing the D/C Cut in the Fuse box helps and much easier than removing battery negative terminal. 

Where it is? Can you share a photo, please?

Thanks.

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With winter just around the corner and yet another key fob Battery replacement done (twice a year it seems), my thoughts turned to the 12V service Battery in my Auris Hybrid and to this thread. I bought  a 12V booster pack just in case I get caught out by a fully discharged service Battery this winter. But that got me thinking about why the traction battery doesn't  trickle charge it (if the service battery falls below a minimum voltage, for example). Apparently, even a fully charged traction battery isn't set up to trickle charge the service battery! Why not? It's certainly big enough. Surely it could be done without compromising the traction battery's ability to start the ICU?   

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5 hours ago, mintymiller said:

With winter just around the corner and yet another key fob battery replacement done (twice a year it seems), my thoughts turned to the 12V service battery in my Auris Hybrid and to this thread. I bought  a 12V booster pack just in case I get caught out by a fully discharged service battery this winter. But that got me thinking about why the traction battery doesn't  trickle charge it (if the service battery falls below a minimum voltage, for example). Apparently, even a fully charged traction battery isn't set up to trickle charge the service battery! Why not? It's certainly big enough. Surely it could be done without compromising the traction battery's ability to start the ICU?   

The hybrid Battery required the ECU and other controllers to be powered to manage the DC to DC converter.  It takes at least 10 Amps to be on and it does not make sense powering so much wattage. The key fob on smart-keys need to be far enough to bring the remote system to sleep.  At least 10m from the car. If it is too close, thief can use signal ampiflier to steal your car.   My Battery is 7 years old, the open voltage is 12.2V in winter and 12.4 V in summer when I use it daily for 10Km commute.  It never have troubles starting the car even if I parked it for 2 weeks.  Everytime I test it with ACC mode (2x power button without pressing the brake pedals), the voltage is 11.7-11.9V, with the HIR2 headlights on it drops to 11.3V.  Generally, if the Voltage is always above 10.5V, and never drop below 10V when we start the car (60 Amps), the car will just start without problems.  If it ever droped below 10V at any moment, error trouble code is usually show up or the car will not go to READY mode.  Our car needs very small amperage compared to regular car with starter motor. 60 Amps vs 200Amps or more.    Yes, keeping 12V booster pack is always helpfull because things happen but we only need decent safe booster pack, at least with TÜV approval. Some unknown chinese charger are fire hazzards.  The one from LIDL or ALDI are actually really good including their 5Amps Battery charger €15 with microcontrolers.  It has 1 optocoupler just like CTEK that is sold 5x more.   

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dear oh dear,here we go again,page after page,all hybrid models flat 12v Battery. Mine had 3 jump starts in a week,a friend used his mini jumper as my Maxtool JSL240 was'nt doing anything,staying fully charged. AA did the job yesterday,but could'nt test my Maxtool. He sugested metal foil over both sides of fuse box terminal.[if the Maxtool works]

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4 hours ago, loz8 said:

dear oh dear,here we go again,page after page,all hybrid models flat 12v battery. Mine had 3 jump starts in a week,a friend used his mini jumper as my Maxtool JSL240 was'nt doing anything,staying fully charged. AA did the job yesterday,but could'nt test my Maxtool. He sugested metal foil over both sides of fuse box terminal.[if the Maxtool works]

footnote,on rereading instructions,if not used for a while,the tool may be discharged although reading full charge leds.How !Removed! stupid is that,it could need acharge just when you need it.

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Lawrence, you may need to prepare a new  12V Battery. Get the original Yuasa battry. When it is flat well below 12V, the Battery loose the capacity sognificantly from sulphation. It may hold the charge for couple hours but not days anymore.  I have similar bad Battery symptoms, need jump starts after not driven for 18 hours on my 06 Prius. One of the cell failed. I still have my original battery on my Auris 2016 Jan, 7 y old battery and 0 issues since it was new. In winter I do daily short trips < 2 x 3 miles per day but 20-50 miles in weekend. 

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  • 2 weeks later...

just an update on Maxtool,tested the amp on boost,16v only for over a second then dead. 3 mnths old used succesfuly once. Back on to Amazon,the site said only returnable 1 month.  Oh well its still a torch,ha that went too.

Now waiting for Noco gb70. 2000 amps. picked for it's high purchesers.

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