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2Addicts | BMW 2-Series forum Technical Topics Mechanical Maintenance and TSBs: Break-in | Oil & Fluids | Servicing | TSB Trickle charger recommendation for stored car

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      01-14-2022, 10:43 PM   #1
60_Driver
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Trickle charger recommendation for stored car

I did the obligatory search and didn’t find anything. Do you guys have any recommendations for trickle chargers on a stored car? My rwd convertible won’t see the road much over this nh winter. Thanks in advance!
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      01-14-2022, 10:54 PM   #2
aerobod
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If it is just for storage and not general purpose charging and battery rejuvenation, I use a CTEK US 0.8. Only O.8A, but is fine for maintaining battery charge and light enough to hang from a ceiling plug-in above the car. I leave my Caterham battery on this charger over the winter.

I also have a NOCO Genius 10 10A charger for more series charging and desulphasion duties, which is also safe to leave permanently on the battery, typically I will use this on the BMW if It doesn’t get driven for a week or more in the winter.
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      01-14-2022, 11:23 PM   #3
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Quote:
Originally Posted by aerobod View Post
If it is just for storage and not general purpose charging and battery rejuvenation, I use a CTEK US 0.8. Only O.8A, but is fine for maintaining battery charge and light enough to hang from a ceiling plug-in above the car. I leave my Caterham battery on this charger over the winter.

I also have a NOCO Genius 10 10A charger for more series charging and desulphasion duties, which is also safe to leave permanently on the battery, typically I will use this on the BMW if It doesn’t get driven for a week or more in the winter.
Good stuff. Thanks for the info! I tend not to take good care of my batteries. The bmw sits for a lot longer than a week between drives.
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      01-15-2022, 12:53 PM   #4
John in VA
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CTEK also has good products - I have several of the MUS 4.3 units. The German car manufacturers rebadge them with their own logos & offer them at the dealerships. Check pricing on eBay & Amazon.
https://smartercharger.com/collections/vehicle/?i=1
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      01-15-2022, 06:17 PM   #5
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Quote:
Originally Posted by John in VA View Post
CTEK also has good products - I have several of the MUS 4.3 units. The German car manufacturers rebadge them with their own logos & offer them at the dealerships. Check pricing on eBay & Amazon.
https://smartercharger.com/collections/vehicle/?i=1
That’s good to know. BMW would probably be less inclined to put their name on it if the product was a complete turd. Thanks for the info!
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      01-16-2022, 09:57 PM   #6
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Went with the NOCO Genius 10 today and threw it on an hour ago. Seems to be working as advertised.

I was concerned when I got a “battery discharged” warning after letting her run in the driveway for 30 min the night before last as I unloaded a pallet of wood pellets from my truck. My last drive was on 12/17 and it wasn’t a long one. I plugged the NOCO in & it went from one flashing red light to the pulsing green light indicating the battery was being optimized for extended life. Not bad for an original 2016 BMW battery!

I’m curious to see what this thing can do for my neglected Deere mower sitting in my unheated shed. Thanks again for the help, gents!

Last edited by 60_Driver; 01-16-2022 at 09:59 PM.. Reason: Poor grammar.
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