I was about to get my 2003 Prius inspected and will not start due to the Aux battery being dead. The Aux battery is real expensive. $350+ range. Any way I can adapt the battery from my wrecked 2009? Edit: I don't think the battery in her is original because the Battery is a Panasonic D23, which does not seem to be the battery listed for the 2003 Prius at all.
Read through this recent thread: Hello -- an Introduction | PriusChat You DO NOT need to spend $350 for a 12V battery! There are several options, as discussed in the thread link. It involves a bit of DIY work, such as, e.g., conversion of the OEM battery clamps to SAE (the usual domestic size), and modification of the hold-down. If you're willing and able to do some work yourself, you can save a lot of $$. I recommend you look at a U1R lawn tractor battery as a replacement. Remember, the aux. battery does not have to turn a starter motor in our cars; it merely boots the hybrid system when the ignition key is turned, and then the HV battery starts the gas engine. There's been a lot of back-and-forth on the forum in re: AGM batteries, vented batteries, CCA capacity, etc., etc. I prefer to keep it simple and affordable. I'm sure other members will chime in here with more opinions/advice!
Is it okay to use a non AGM battery? I can get a U1R at Walmart for $30 Posts are even in the same positions
When the goal is just to start the hybrid system, any 12V battery that is charged will do. You can start it with a battery from a screwdriver or a battery for a UPS unit. But if you plan to drive, stop, start again, stop again, then it is better to install a good battery for a car of size 46B24.
I've never used an AGM battery; I figure if the car goes upside down, I'll have much more to worry about than some spilled battery acid! Nor have I ever bothered with a vented battery, since the original was replaced years ago. (Hydrogen gassing off the battery is the reason for the venting. For many years I drove a '64 VW Beetle, with the 6V battery under the rear seat!) You will get different opinions on these topics, guaranteed, but I can only share my experience as an owner for 23 years now. I would buy a battery with more amp-hour capacity than the $30 one from Wallyworld, if starting and stopping is a concern. In that regard, I'm very satisfied with the Duracell U1R that I linked in the post cited above. The 46B24 battery mentioned above will be a very tight fit in the Classic, if it fits at all. Note that the poster owns a 2007, which is a different critter.
https://www.autozone.com/searchresult?searchText=battery%20terminals One of our members has had success bolting the existing clamps directly to the U1R spade-type terminals, which have a convenient hole already drilled.
I just did a deeper dive into AGM batteries: What Is an AGM Battery? AGM vs Standard Batteries | Interstate Batteries Read it and decide if your car needs one. I say no. Remember, you aren't stopping and re-starting with a starter motor every time your Prius gas engine stops; as long as the car is in Ready mode, the hybrid system is already engaged and the HV battery starts the ICE (internal combustion engine, gas engine).
I figure it out but any pictures of what they look like? Sometimes a pictures shows what needs to be done.
No, I have three operational Prius, a 2003, a 2006, and a 2007. I have a 2009 that got into a front end collision that I am keeping as more or less a parts car. Also, when I get a couple of days of warm weather, I will move the hybrid battery of the 2009 to the 2006 because the battery is less than a year old. What I asked originally is how hard it would be to swap the non hybrid battery from the 2009 to the 2003? I don't think the battery in the car is the original, being a Panasonic D23 battery while according to Toyota, the battery she is suppose to have is a Toyota 28800-21050 Battery. Maybe they are the same but both batteries are about half mystery. If there is a other alternatives, I would love to find out. The UR1L is one but could try a 51 or 151 depending on the battery? I can likely some up with a new tie down for a larger battery or use a shim or something like it (I have some scrap rubber) for a smaller battery.
Walmart was out of U1R Batteries but got a U1 battery It will start the Prius and no triangle of death Figure I would show what it looks like mounted for others. Used a piece of wood and a block of rubber to secure the battery.
Nice work! Simple solutions are often the best solutions, and the topic of 12 volt auxiliary batteries has been overthought to distraction on the forum. Best wishes for long, trouble-free service with this set-up.
I was choking on the $350 to $450, depending on the Toyota dealer. Keeping the old one in case I need a core however.
Passed inspection for good or ill. Of course they did not even look in the Trump to look at the battery.
