Odyssey PC680 alternative?

[unofficialPete]

Purchased my 182 last year, clean example with some well done mods, except maybe the battery relocation to under the passenger seat (although loads of room under the hood for a big air filter).
The car is used sparingly, weekends and short journeys. As time goes on the battery is liking this less and less. Either the battery is getting old, it isn't meant to hold charge for such little use or a bit of both.
Is there an alternative that is going to fit the same cage and cope with not being used for 2-3 weeks?

Suspect the previous owner kept the car garaged and trickle charging.

 

[ilovewilly]

Powervamp do a cheaper copy, but Powervamp admit the specs are lower than the PC680.

Whip it out and see if the person who fitted it peeled off the installation date stickers. Odyssey batteries do have the build month/year written on the top so it's worth looking to see how old it is.

 

[unofficialPete]

Perfect thanks, I wish it was easy to whip out! May have to lift out the passenger seat first, save that for another day!