Will Prius Prime 12V battery die after a 25 days vacation?

this isn't a prime, but might be similar
watch

 

A car only sits on the ship for a couple of weeks. Say the ship makes 18 knots, then the run from Japan to Los Angeles will be 12 or 13 days. A trip from Asia through Panama to the U.S. east coast will be maybe a week longer. A car can sit on a dealer's lot or showroom floor longer than that. I think the tires are over inflated to give a steadier platform for lashing the car down inside the ship. I've parked vehicles for a couple of months without problem. (Not a Prime with its battery draw.) There is no need to change the oil before the scheduled time. Oil inside a shut-off engine is very stable for a long time.

 

In most cars, the battery and its negative terminal is easy to spot once the hood is opened. The terminals are metal posts on the battery; top or side. The negative has a black cable connected to it. The positive uses red, and has a little plastic cover for the terminal. The cables are held on by a clamp that is tightened by a bolt. Taking them off just means loosening that bolt until it is easy to slide the clamp off.

 

Don’t ovetighten when reconnecting clamp: there’s a very light torque spec in the repair manual, but in practice a 10 mm box wrench is easiest to use. Finger-tight the the bolt, then maybe a 1/4 turn more. Definitely not full force. Check that it’s secure by trying to wiggle it; it should stay put.

 

Seems to be the best advice so far... removes the high drain circuits while maintaining the ECU. Thanks, Georgina!

 

The ultimate answer depends mostly upon:
How OLD your 12 V battery is.
How fully charged it is when you leave.

Then......it would seem if you have access to plug in the main charging cord and leave it, you should be able to fairly easily arrange to plug in a tender and leave IT too.

 

Watch the “Ken Wins” episode of “Breaking Bad”. Maybe a little over the top but possible.

 

Maybe possible if that windshield washer squeegee had a metal bar a couple inches thick. LOL! That little strip would have melted in two in about a tenth of a second. Definitely fun to watch, though.

 

It’s the washer fluid. Makes all the difference.

 

Right!!

 

These days battery maintainers are small and can fit under the hood. But you will need the solar one, which will keep on running with solar. I am not sure if those tiny maintainers will last 25 days. I had gone through similar experience but parked the car for 5 months, after which battery was dead and had to tow and replace the battery. Please keep us posted once you return.

 

They certainly should.
But the capacity might not be enough to do much good.