New battery: 20% off at batteries plus.

[andrewwynn]

Originally Posted by StephenVA

It must be winter time! The second highest battery selling time of the year. Believe it or not, summer is the highest time for battery sales. Get them tested now on those daily drivers as it will beat finding out one cold and frosty morning the hard way....

Not in Wisconsin :-)

Overall it makes sense though. People go on long trips in summer and would rather replace an old battery before they go and at least half the country doesn’t have to deal with below zero (F) starts.

[StephenVA]

Down south the heat boils them
Up north the winters freeze them
Either way batteries croak all the time especially the marginal ones that get exposed to extreme temps.
Cold temps require high Amp draw to spin cold parts into action. The ones to watch are the people who turn on their lights, select their blue tooth song, turn on the wipers, heat warmers, then start the car. Gee, a few amps more will not effect anything will it?

[wpoll]

Just got a new one for my X yesterday - a DIN88ZLMF - was twice the $ you folks are quoting and that was half what the RRP is...!

An AGM is near $800 down here...

[Qsilver7]

Just an FYI...I'd recommend the 49/H8 battery size versus the slightly lower spec 94R/H7 battery size. The H8 battery class size has an amp hour rating that is usually between 90AH - 94AH (depending on battery manufacturer)...where as the H7 battery class size runs between 80AH - 84AH (again, depending on battery manufacturer).

But if the 94R/H7 battery is working for you...no problem...it not like its life or death.

You can see what the specs are in the East Penn chart below. Other battery manufacturers specs will be similar/close or the same:

• CCA (cold cranking amps)
• RC (residual capacity)
• AH (amp hour)
• CA (cranking amps

AND DON'T FORGET TO VENT THE BATTERY TO THE EXTERIOR OF THE CAR!!

[oldskewel]

^^^

Yes, exactly as I found. Good pics.

The overall dimensions of the rectangular box / opening there will fit an H9, but would require cutting all those plastic things that protrude into that volume, not being able to clamp it down, etc.

I had really hoped an H9 would fit so I could run with a pair of H9s in my Cayenne and E53, but H8s are doing fine.

[andrewwynn]

H8 fits without modification? I was concerned that the vent wouldn’t line up.


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[wpoll]

Originally Posted by andrewwynn

H8 fits without modification? I was concerned that the vent wouldn’t line up.


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It's a flexible hose - why would it not line up?

Re. the vents - when changing my battery yesterday I noticed my battery clamp is corroded by battery acid and that the old and new batteries have a vent hole at each end. The new battery came with a small plug on one vent hole (the positive) so I've installed the plug on the battery negative end and the vent hose on the positive end.

Anyone else had a battery with a vent on the negative end?

[Overboost]

Originally Posted by wpoll

It's a flexible hose - why would it not line up?

Re. the vents - when changing my battery yesterday I noticed my battery clamp is corroded by battery acid and that the old and new batteries have a vent hole at each end. The new battery came with a small plug on one vent hole (the positive) so I've installed the plug on the battery negative end and the vent hose on the positive end.

Anyone else had a battery with a vent on the negative end?

My E53 and E46 AGM batteries both have vent holes on both sides. My accessory kits came with a 90 degree connector and a plug. I connect my hose to the 90 degree on the correct side and install the plug on the other side.

[wpoll]

Originally Posted by Overboost

My E53 and E46 AGM batteries both have vent holes on both sides. My accessory kits came with a 90 degree connector and a plug. I connect my hose to the 90 degree on the correct side and install the plug on the other side.

Thanks OB - that's what I figured - I think the previous owner (or mechanic etc.) failed to block the un-used vent port, leading to the minor acid damage.

Just can't get good help these days...

[andrewwynn]

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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