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  #21  
Old 01-20-2020, 02:51 PM
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I have the Bosch H8 AGM (also from Pepboys) in my 3.0i right now and is still showing strong charge retention after 5yrs+. I had noticed the Champion branded batteries are available starting sometime last year and is lower priced than the equivalent Bosch version. Looking at their specs, I can't really tell one from the other. Having had good experience with 2 Bosch batteries, I'm wondering if it's worth the tiny premium over the Champion?


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Originally Posted by oldskewel View Post
Yes, repeating, I dropped an H8 in my 2001 3.0i with no modifications at all needed. Clamp was a perfect fit, holding the base up against the protruding fins on the left side of the bottom of the box. Vent connected just like the one I replaced.

Here's the exact one I put in:
https://www.pepboys.com/champion-agm...roduct/2071679
BTW, from what I can tell, these Champion branded batteries are made by Johnson Controls and are only sold at PepBoys, so it's some special store-brand type of thing. 4 year full replacement warranty. And BTW, if anyone goes searching on PepBoys for other batteries, don't even try. Searching via google aimed at pepboys.com will actually get you useful info.

Most AGM batteries I've seen lately have the small standard hole for a vent plug on both left and right ends. When you get the battery at the store, it often has a rectangular, red/orange, mini-table-looking thing that plugs in and sits over the positive terminal. That piece of plastic will have a break-off plug cast into it. So that's where they give you the plug for the unused opening. Easy to miss that and mistakenly leave the second opening un-plugged.

I have also found that a plastic cap to a Presta valve (for high pressure bicycle tires) is an excellent substitute for a missing plug.
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  #22  
Old 01-20-2020, 03:06 PM
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Quote:
Originally Posted by andrewwynn View Post
When I installed my battery there was not much leeway on the vent hose. If the vent was on the opposite corner no chance it would reach.

Still unclear which battery might fit without cutting plastic.


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49/H8 will fit! 49/H8 will fit! 49H8 will fit!

And if you want to go a bit underpowered and less money...a 94R/H7 will fit, too.

As mentioned and pictured above the H8 will fit.

This is the Duracell 49/H8 installed in my e53 X5:



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  #23  
Old 01-25-2020, 10:27 PM
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Quote:
Originally Posted by oldskewel View Post
Yes, repeating, I dropped an H8 in my 2001 3.0i with no modifications at all needed. Clamp was a perfect fit, holding the base up against the protruding fins on the left side of the bottom of the box. Vent connected just like the one I replaced.

Here's the exact one I put in:
https://www.pepboys.com/champion-agm...roduct/2071679
BTW, from what I can tell, these Champion branded batteries are made by Johnson Controls and are only sold at PepBoys, so it's some special store-brand type of thing. 4 year full replacement warranty. And BTW, if anyone goes searching on PepBoys for other batteries, don't even try. Searching via google aimed at pepboys.com will actually get you useful info.

Most AGM batteries I've seen lately have the small standard hole for a vent plug on both left and right ends. When you get the battery at the store, it often has a rectangular, red/orange, mini-table-looking thing that plugs in and sits over the positive terminal. That piece of plastic will have a break-off plug cast into it. So that's where they give you the plug for the unused opening. Easy to miss that and mistakenly leave the second opening un-plugged.

I have also found that a plastic cap to a Presta valve (for high pressure bicycle tires) is an excellent substitute for a missing plug.
Just installed that Pep Boys special battery today. Thanks for the heads up!

The H8 fits perfectly. NO modification to anything necessary.
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  #24  
Old 01-27-2020, 07:31 PM
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I picked up H8 today from Sam's Club. $138 with $10 core.

Duracell wet battery: Made in Germany that caught me by surprise 3 year warranty
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  #25  
Old 01-30-2020, 01:44 PM
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H7 v. H8

The boards trick I used to leverage out the old one. The bigger board didn't fit in the handle but the thin scrap fit no problem. Got to use my body mass to leverage it out of the hole no back strain.

The three sizes the battery bay is designed for are: 10 3/4, 12 1/4, 13 3/4.

7" width. I didn't measure the height I think most are the same.

Very happy the bigger battery fits and at least the Duracell (made in Germany) had the vent hole in the same place so no problems connecting. The new battery is a beast: [email protected] 0F >1100A @32F. I think mine is closer to 800/950 (but is AGM).

The H8 must be more common it was $20-30 less expensive to boot.

Have to say having changed the two batteries in our X5 and in a previous life changed 15 or so in other cars, the in the trunk placement is far superior.

Old battery had a dec '14 fabrication sticker so 5 years not terrible. Just about the time i would replace "before next winter" anyhow.
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  #26  
Old 01-30-2020, 02:34 PM
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Timely thread for my E39. I first replaced the BMW branded battery with a lead acid H7 from WalMart for $149 +$12 core. They were close by and I was in a pinch.

But the positive experience there had me looking online for an H8 AGM.
  • I searched at Costco to find them ~$179. The local store said that the H8 wouldn't fit. (It does)
  • AutoZone and Advance was near $200 for the house brand.
  • A WalMart in a neighboring state had the AGM H8 for the same price as the lead H7. Winner Winner, chicken dinner
I purchased and installed the H8 AGM in the E39 and returned the H7 to WalMart the day after I bought it. After core and local taxes, the H8 at Walmart was $160. The battery has a 5 year pro rated warranty. I would install one in the X5 if needed. I purchased an expensive XS brand AGM almost 2 years ago. It came with screw down stand offs that were too tall for the E53 battery block. I found shorter ones at a Batteries Plus and all has been well. This battery has been working well since then.

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  #27  
Old 01-30-2020, 03:35 PM
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Quote:
Originally Posted by andrewwynn View Post
...
7" width. I didn't measure the height I think most are the same.
They aren't all the same height, or at least they aren't over here.

That was my biggest concern when moving from the DIN85 to the DIN88 - the batteries are identical in length and width but the DIN88 is around 5/8" taller. 15mm to be precise.

The spare tyre frame (triangular steel frame) has a special raised lip designed to clear the BST. At just the right point. Just.

(click image for larger view)

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  #28  
Old 01-30-2020, 05:39 PM
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Good to know I didn't measure the height but also: H8 all you need to know it's the biggest designed to fit and does so perfectly. I would have used in my car had I known
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  #29  
Old 01-30-2020, 05:59 PM
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See post #10 above. The only difference between H5 through H9 are the lengths. But as Andrew indicated, the largest we can stuffed in our X is H8.

BUT, I can't say the same for DINxx specs.


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Originally Posted by wpoll View Post
They aren't all the same height, or at least they aren't over here.

That was my biggest concern when moving from the DIN85 to the DIN88 - the batteries are identical in length and width but the DIN88 is around 5/8" taller. 15mm to be precise.

The spare tyre frame (triangular steel frame) has a special raised lip designed to clear the BST. At just the right point. Just.

(click image for larger view)

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Last edited by dkl; 01-30-2020 at 06:05 PM.
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  #30  
Old 01-30-2020, 07:34 PM
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Quote:
Originally Posted by dkl View Post
See post #10 above. The only difference between H5 through H9 are the lengths. But as Andrew indicated, the largest we can stuffed in our X is H8.

BUT, I can't say the same for DINxx specs.
Looking at that chart (which contains a plethora of specs I've never heard off), it looks like the DIN85 is a "T8 spec" battery (175mm tall) while the DIN88 is an "H8 spec" battery (190mm tall).

So yeah, as Andrew said, all the "H spec" batteries will be the same height.

I only mentioned it as Down Under (Aust & NZ) and maybe in the UK(?) the batteries are spec'd rather differently. But at least the basic dimensions are the same!!!
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