Battery Charging question

BlackedOutBimmer · 03-23-2015, 08:57 AM

I have a CTEK 3300 float charger... highly recommended... even over the rebranded Deltran BMW one... and yes, I am using the under the hood connections.

Anyways...

The CTEK has a few different settings... as you can see, one setting for AGM/cold weather... I was using this setting over the winter due to cold weather, however now that it is warming up is the regular "car setting - 14.4V/3.3A" the correct one to use.

I do NOT have a AGM battery.
I have a white-top battery, which I understand is a "regular" battery... so I assume I should just be using the "car setting"

Also, are the regular white-top batteries "sealed"? ... as in, they don't off-gas do they? ... because my battery is still in my truck while it is charging and I know it is "possible" for off-gassing batteries to explode...

Image from CTEK manual with different modes:
[IMG]

image by AllBlackBimmer, on Flickr[/IMG]

jc2078 · 03-26-2015, 10:51 PM

the wet non agm batteries (white) do give off gases which is ventilated by a tube on the side of the battery

so you are fine since its ventilated

03-23-2015, 08:57 AM	#1
BlackedOutBimmer Colonel 846 Rep 2,828 Posts Drives: 2019 X3 m40i Join Date: Aug 2011 Location: USA iTrader: (-1)	Battery Charging question I have a CTEK 3300 float charger... highly recommended... even over the rebranded Deltran BMW one... and yes, I am using the under the hood connections. Anyways... The CTEK has a few different settings... as you can see, one setting for AGM/cold weather... I was using this setting over the winter due to cold weather, however now that it is warming up is the regular "car setting - 14.4V/3.3A" the correct one to use. I do NOT have a AGM battery. I have a white-top battery, which I understand is a "regular" battery... so I assume I should just be using the "car setting" Also, are the regular white-top batteries "sealed"? ... as in, they don't off-gas do they? ... because my battery is still in my truck while it is charging and I know it is "possible" for off-gassing batteries to explode... Image from CTEK manual with different modes: [IMG]image by AllBlackBimmer, on Flickr[/IMG] __________________ 2019 X3 m40i:Carbon Black:Executive:Premium:Adaptive:Vernasca:699M:HK: Ambient:IND trim:M Mirrors:15mm spacers:Maxton lip:20% tint windows/pano:dsg paddles:TLG mudflaps 2008 328i E90 Jet Black:6MT:RWD:Premium:Sport:Xenon:MTEC V3 AEs:Front Splitters:CF spoiler:19" VMR FF v710
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03-26-2015, 10:51 PM	#2
jc2078 Private 16 Rep 71 Posts Drives: 335i Join Date: Jan 2015 Location: United States iTrader: (0)	the wet non agm batteries (white) do give off gases which is ventilated by a tube on the side of the battery so you are fine since its ventilated
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