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That Sears battery is interesting. On the plus side, it does say "AGM". I wonder if they just use a generic carcass for both their lead acid batteries and AGM batteries, and that's why it has the vent adapters? Worth a call or email to Sears to confirm.
That Sears battery is interesting. On the plus side, it does say "AGM". I wonder if they just use a generic carcass for both their lead acid batteries and AGM batteries, and that's why it has the vent adapters? Worth a can or email to Sears to confirm.
You could be right on the carcass.
With that in mind, do AGM batteries have vents just in case of some gas off from overcharging?
With that in mind, do AGM batteries have vents just in case of some gas off from overcharging?
Originally Posted by LexVan
That Sears battery is interesting. On the plus side, it does say "AGM". I wonder if they just use a generic carcass for both their lead acid batteries and AGM batteries, and that's why it has the vent adapters? Worth a call or email to Sears to confirm.
I just spoke with East Penn CS which manufactures the DieHard AGM (and prob Duracell too). They said the battery is completely sealed and maintenance free but the vent holes are there in case there’s an excess gas build up. From my research this does happen to AGM batteries when they are overcharged.
For the folks with the Duracell AGM maybe you can check and confirm that you also have these vent holes near the top/ side posts?
For the folks with the Duracell AGM maybe you can check and confirm that you also have these vent holes near the top/ side posts?
It appears you are correct. Looking at photos online it appears the Sears battery you pictured and the Duracell Platinum AGM are actually the same battery. I can see those holes at the same location. The handles are the same, the nuances such as the plastic notches in the top cap to the left of the red terminal and side fittings are the same.
At least you don't have to worry about running a vent tube. That compartment isn't that sealed and any gasses that may escape should have plenty of room to escape.
It appears you are correct. Looking at photos online it appears the Sears battery you pictured and the Duracell Platinum AGM are actually the same battery. I can see those holes at the same location. The handles are the same, the nuances such as the plastic notches in the top cap to the left of the red terminal and side fittings are the same.<br /><br />At least you don't have to worry about running a vent tube. That compartment isn't that sealed and any gasses that may escape should have plenty of room to escape.<br /><img src="https://cimg6.ibsrv.net/gimg/rennlist.com-vbulletin/400x400/814757_jpg_ab917880106b069b3d248ce0af9aadd533ca5777.png"/><img src="https://cimg0.ibsrv.net/gimg/rennlist.com-vbulletin/400x400/spin_prod_601733101_e4837386fca438e2c0ce3d6f119822f8e5b85ad3.jpeg"/>
<br />As an FYI.... there are really only a few companies in the bigger scope of things making MOST all the better batteries.... they are just rebranded, and you are buying the brand and can sometimes pay significantly more for one brand to the next but they are exactly the same battery... as above. Usually the large manufacturer who supplies these companies with have about 2-3 different Case Styles they use for all the certain size batteries... in the above example it exactly the same case, but they may have one other one so that they can then sell to other battery brands with the same size but just not the same exact look. But all the bigger brand names will all use the same,of the roughly 8, really massive Lead Battery Manufacturers Korea, Taiwan or China. East Penn which is Deka also make a ton of the rebranded ones.
Last edited by Antigravity; 04-09-2018 at 07:06 PM.
Banner Battery - Vents.
The OEM battery, “Banner” also has the same vents.
Good observation, I didn't think about checking the Banner.
Originally Posted by StormRune
It appears you are correct. Looking at photos online it appears the Sears battery you pictured and the Duracell Platinum AGM are actually the same battery. I can see those holes at the same location. The handles are the same, the nuances such as the plastic notches in the top cap to the left of the red terminal and side fittings are the same.
At least you don't have to worry about running a vent tube. That compartment isn't that sealed and any gasses that may escape should have plenty of room to escape.
According to this website, the same manufacturer also makes the AGM batteries sold at AutoZone, CarQuest, Advance Auto Parts, and O'Reilly. And they are probably the manufacturer for oem BMW AGM batteries as well.
Great thred!! Thank you - used this thred to replace the battery in my 2013 C4. My battery was the original and the auto/stop start didn’t seem to work properly so figured it was time. I used the same Duracell AGM noted here (paid around $200 including core return @ batteries+). I did not use a battery tender and didn’t lose any settings or even have to reset the windows as some others have noted. It took me about 35 minutes. The biggest challenge is getting the battery in while keeping the battery connects out of the way. I replaced the battery in my 2007 Cayman S a number of years ago and recall that being much easier (less pieces to remove and screws/ bolts were easier to access.) thanks again!!!
We fully understand the not wanting to deal with coming up with a mount for a battery...most users want the drop-in fit option and so do we. Anyway here is a CAD render of the Battery Hold-Downs... we finished the design over a week ago but have to wait on the backlog of our CNC company so we are looking at 4-6 weeks to get production done.... The hold-down will be a plate that bolts directly onto the bottom of our RS-30 Battery and you just put it in like you would the original Porsche battery with no modifications necessary. We made the footer to be exactly like the stock battery so it uses the same cleat and in most cases, unless you track or race, you do not need the top hold down shown in the image. We just put that top hold-down because some race series require a metal hold down and others will be using it it for racing which has massive vibration and its and extra level of holding the battery and we also do alot of Off-Road Truck Racing and you have to have that extra level of security.
Have you developed the 991 mount yet and is it on your website? Cost of the adapter plate? I see you have the battery for $ 700 on the website and its 11 lb. which is a huge weight savings over these 50 lb + monsters everyone is putting in.
Also, nominal voltage of RS-30 is 12.8v. Will that cause any issues with charging system, which may see 12.8v and think it constantly needs charging? Will a standard AGM tender (CTEK 7002) work?
In the PIWIS Extended Info section of the Gateway, there are fields on battery aging, but I do not know if they are used. In the PIWIS, when changing the battery, there are fields for the battery type (lead acid, AGM, etc), Amp hours, serial number of battery, and Porsche part number must be entered in Gateway/Maintenance-Repairs/Change Battery. All four fields have to be entered to successfully continue with the Change Battery function.
I had bought a Duracell H8. I used the same serial number of my old battery. Then it was set to wet and not AGM and had a blank amp hour rating. These items may be lost when the power is lost or are defaults in the Change Battery function. In any case, for part number I used one of the following: 999611XXX12 - where XXX is 070 for 70 AH, 080 for 80 AH and 095 for 95 Amp hours. Anyway it all took (I used 095 and AGM).
The purpose in setting the amp hours is to let the car know how long to charge and perhaps is used by Auto Start/Stop. AGM for the charging voltage. I don't think the serial number affects anything, but I wanted the part number to proximate the new battery's amp hour in case it was used to verify the manual amp hour number entered.
Any reason not to just go with oem banner Porsche branded battery? Pricing at Sunset seems similar in the $230 range as these other batteries being mentioned. I see there is a 70, 80 and 95 Ah...any reason/benefit why you would need the bigger size? Cost increase goes up in $30 intervals...
04-09-2018, 08:48 AM
