12V Battery replacement

I don't know anyone who has purchased from elearnaid, but the fellow behind it has posted to some of the Prius internet groups, and has purchased ad space on others so I'm inclined to think he's an OK guy.

The same vented MK battery is available elsewhere for about the same price, and you could probably DIY your own adapter for its larger posts.

For 2001 Prius, I bought the MK battery direct from the factory (in Irvine or Anaheim CA) and hacksawed its posts down to the correct size. That worked well for less than a year, and the connections had corroded extensively. Perhaps because I cut them? Anyway, am now using a similar but unvented MK battery with the connections faked in a different way and it is holding up very well.

If you mange to convince yourself that the battery vent tube is not essential, there are many sealed lead acid options of about 30 amp hours for $50 or maybe less.

Toyot's replacement battery has a much higher list price, but no reason not to take the elarnaid page to the parts desk and ask what their minimum price would be. Then decide.

 

Battery works great. eLearnaid shipped me a direct replacement, which failed after 18 months. I called and they shipped me a new battery the next day. Really great service from eLearnAid

 

Elearnaid service is from what I have read on this forum very good but unfortunately this post points to another failed Optima battery that is supposed to be a premium product priced at the top of the range for AGM batteries.