have you ever read, anywhere on social media, anyone complaining that their CTEK battery maintainer destroyed or overcharged their battery? I have not.
NOCO GENIUS 10 burning out batteries?
- Thread starter lokijoker
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I thought you were sending this back months ago after the mini episode, why'd you stick it on something else?
I've not posted anything about it but had a CTEK maintainer overcharge an Optima Bluetop in my boat. I believe it happened when we had a power surge at our house while the charger was hooked up to the battery. Now all my battery tenders are hooked up with surge protectors.
My 20 year old Schumacher 1.5 amp maintainers have been stellar after all these years. They have been almost constantly maintaining my motorcycles AGM battery and my wife’s rarely driven 2008 Pontiac Solstice GXP 2.0 T for years with never a problem. I just bought 2 of their newer model 2 amp maintainers on Black Friday from Amazon for $15 each shipped. My son uses his 1.5 amp alternately on his 6 volt 1959 Ford Jubilee farm tractor, his electric start generator, lawn mower, and his Harley Road King. I’ll gift him one of the 2 amp maintainers for Christmas and I’ll keep one as a spare….just in case.
5 NOCO chargers here and zero problems. A 4 bank, 2 bank, a couple of single 2 amp ones and a single 1 amp. Hopefully it was an isolated incident. Curious to hear what happened from NOCO.
I've seen way more dead CTEKs and Battery Minders then Nocos at our marina in the past by a long shot. I use a Noco now for my cars to trickle charge them once every few months...
harbor
Site Donor 2025
Any issues with the NoCo Genius 1? I’ve got one on my Challenger this winter.
Some may scoff at me but my preference is to use the harbor freight dummy style battery maintainers. They are low current and and put out around 13.4 to 13.6 volts so will not boil a flooded lead acid battery.
The important thing is to test and verify the voltage level your charger is putting out during float or maintenance mode. You typically dont want to see more than 13.6V on a fully charged lead acid battery.
The important thing is to test and verify the voltage level your charger is putting out during float or maintenance mode. You typically dont want to see more than 13.6V on a fully charged lead acid battery.
I'm not sure, on mine there is an AGM selection and it doesn't say 12v or 6v. It's ~10 yrs old.
There is also a selection for 6v or 12v, (Bike or Car) since this is a VERY smart charger I think
that once you select the Mode it will apply whatever setting is necessary for AGMs if selected.
The snowflake is also the AGM mode.
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Trust these even when away
My gripe and it's a feature - power goes down for whatever reason and comes back on shortly or not - your monitor charger is not going come back on (this is the condition in this picture)
My gripe and it's a feature - power goes down for whatever reason and comes back on shortly or not - your monitor charger is not going come back on (this is the condition in this picture)
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Buy a UPS. I got my CTEK that I just bought on a UPS.
f355spider
$50 Site Donor 2025
Don't own one myself, but ProLogix is well regarded and only $40, it does all chemistry types, and even handles 6vt.
Like Battery Minder, it even has automatic temperature compensation.
https://www.amazon.com/dp/B00U3ZBU2E/
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I was just about to say this. You need to put a meter on any charger your using every once in a while. This solid state stuff coming out of China "ain't what it used to be".
f355spider
$50 Site Donor 2025
If the maintainer doesn't display output voltage, you can get one of these and monitor via bluetooth (if you are in range). I've had a similar one to this for over three years, its pretty convenient. The app is free that works with it.
https://www.ebay.com/itm/146258521866
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This is the first complaint i've heard about them. I bought three of them. Keeps my side by side battery at 12.83v at all times. Got tired of the battery being dead every time I went to use it.
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The noco 10 might be too big of a charger. I got the 5 and If I remember right it's big enough for anything I own including my diesel truck. Of course the diesel truck would need a two bank charger
Dead is different than overcharge. Mine was charging over 16 v but seemed good until I got suspicious and checked the charging voltage. Prefer a dead charger over damaged electrical system/components in a Porsche
It should be easy enough to know if your trickle-charger / maintainer is working. Take your voltmeter (because you have a volt meter, right?) and measure your battery while the charger is running (and has been running for at least a week). If it's more than 13.5 volts, you have a problem.
These maintainers should have a voltage readout built in. You can buy a small digital volt readout module for $2 these days, no excuse for them not to be built into these devices.
These maintainers should have a voltage readout built in. You can buy a small digital volt readout module for $2 these days, no excuse for them not to be built into these devices.
Most just have LEDs if that much.
I have some digital readouts in waiting - going to rig to a panel for my genny.
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