Looks like my crank battery went out again....

This seems to happen whenever I have to leave the HS parked for more than 2-3 weeks.

Is there a better aftermarket option like a optima or something?
I don't mind spending alittle extra, if it has a longer lifespan and can handle weeks between cranks.

 

I think the best option is the Toyota original battery. They cost about $200-300 and in my opinion, worth it as they last another ten years.

 

Oh a small point of order... I think you may confuse people if you call this the crank battery. This is the 12V battery you're talking about, and it does not crank the engine.

The 12V battery turns on the computers and high voltage relays to enable system start. It shouldn't be dying from 2-4 weeks parked. If you have a dashcam or something that is drawing power when the car is switched off, that may be discharging your battery and that would be the first thing to look into in my opinion.

And in case it matters, the engine is started (when needed) by the HV battery and the electric motors in the transmission.

 

Get a Solar Battery Maintainer and a plug that connects it to the OBD2 port so it is very easy to connect and remove. My HS is now parked outside for weeks at a time but with the solar battery maintainer on the dash that is plugged into the OBD2 port, I have never had any starting or battery issues. There are many solar battery maintainers available from many sources online, but not many OBD2 connectors.

Link to OBD2 connector, the connector cable will fit 90% of all solar battery maintainers: https://www.batterytender.com/produc..._source=google

 

Well great... The battery is on backorder.
I may HAVE to use a aftermarket option.

 

Try a Toyota dealer, or online search using the part number. OEM part number 2880028100

https://www.clublexus.com/forums/hs-...y-upgrade.html

https://www.clublexus.com/forums/hs-...le-affair.html

Read this: https://www.clublexus.com/forums/hs-...ative-12v.html

Try Batteries Plus or other auto parts stores. You need an AGM type battery with a vent connection for the vent tube.