Ha glad that bonus was helpful haha! Cheers

ProTip! Thanks Optima! In my research, and the many people & clubs I asked on this no one knew this! I even mentioned it to the salespeople where I bought the battery from because I was looking for aftermarket solutions. Must be one of your lesser known features. Will try to fit this soon! Sounds like it will solve the problem!

@@BenCad it's mentioned on the fitment tab on the same page where you took screen shots of our batteries- www.optimabatteries.com/en-us/product-finder?year=2015&make=Subaru&model=WRX+STI&engine=H4-2.5L&find=find

@@optimabatteries yeah thanks Optima, saw that listed but never connected the dots. I might do an updated video to talk about this feature once I do it. Haven't seen any D35 videos for the WRX that also fit the adapter. Thanks for the tips!

Ha I’m glad it helped you! Cheers!

Hey mate, the D35 is a little smaller in size, weight (and power capacity). So if you're wanting to reduce weight the D35 will be good, if you want a little more power capacity go the D34. Now assuming you also have a VA WRX or STI if you watched my whole video, you'll see I hit a fitment problem here. If you see the comment below from Optima Batteries themselves, they let me know the plastic lid you get on the battery is also a height adjuster (seems not many people know about this haha). Which I have now fitted and it fits fine. Otherwise, another youtube user has commented here that the D34 fits perfectly with no height adjusted needed in their VA WRX. I have also used a D34 on my previous 2003 WRX which fit fine as well. Hope that helps you, cheers!

hey mate thanks for the comment. I am not an expert on trickle chargers but I believe its recommend you that you should use one that regulates voltage properly. There's a bit of info on Optima's website that might help. But Yes I believe it should work for you, Cheers. www.optimabatteries.com/experience/blog/can-i-use-a-regular-battery-charger-on-an-optima-battery

Been going great! Car has been barely used during covid lockdowns and the battery has held charge the entire time!

@@BenCad Perfect, thank you for the update

I'm afraid I don't think I'll very helpful here Steve, we don't get extreme cold here in Australia (just rainy--wet-cold days at worst). I will say that optima has lasted without needing a charge with minimal use during winter. Always needed with my other battery. Hope that helps somewhat.

I forget where this one of mine is made, but 3-4 years later and it’s still going strong!

Hey mate, yeah the D34 I think would avoid the small Issue hit here. I'm assuming by your username you're from NZ so I was a little surprised with the fitment issue as none of the US videos seem to report it (I even asked a few guys directly), may be a few differences in the right hand drive models? It certainly gets tight enough if you over-tighten that front side but its not 'neat' in my opinion. I've currently stacked 2 washers on the bolt which has solved my problem for a more even and neat fit. Still probably a better aftermarket solution but definitely no need to rush to find one now. Hope that helps you! Great battery overall though! Cheers

@@BenCad as an update I got the D34 and it fit correctly, not that you would need to upgrade kzfaq.info/get/bejne/jLOdlKWox5Oxf40.html . I think I will send it though to optima to show them

Hey thanks for sharing that looks like a perfect fit! How far did you need to wind down the nut on the battery bolts to fit it? If at all?

@@BenCad they are close to limit. They would have about 5mm left

Sounds like (at least for RHD models) the D34 is the perfect fit then if weight reduction is not a concern. Thanks for that was great to confirm my theory on its fitment.