2023 Prime battery: maker, chemistry, form factor?

My Gen 4 Prius Prime after 140 charging cycles has virtually 0% capacity and range loss. I baby it though (scheduled charge, no heavy acceleration or extreme speeds). I wouldn't worry about the Toyota battery packs as long as you baby them.

 

PHEVs in general tend to baby the battery. Not only can the system shift to the engine when the battery could be stressed, but the battery itself falls under emission control warranty requirements. Manufacturers don't want to pay for replacements during the federally mandated warranty period.

 

You get a lot more charge/discharge cycles due to the lower battery capacity if you drive a PHEV like a BEV though.

 

My comment isn't about what the driver can do, but what the car can do, without the driver's permission. Take a hot day, a PHEV can fire up the ICE to reduce heat build up in the battery from discharging. That is not an option for a BEV's system. The PHEV can avoid high stress points on the battery with engine use, whereas the BEV would just have to 'suck it up'.

 

Prius Prime PHEV works as a BEV in the EV mode, with the ICE never kicking in except during defogger use in certain situations and in extreme-speed driving. There was one owner who reported the ICE kicking in during prolonged downhill regenerative braking, but that was about it.

 

That is an impressive cycle life!

Cycle life greatly depends on the charge rate and discharge rate. You double or quadruple it or more if you use Level 1 instead of Level 2 and accelerate and decelerate gently and avoid fast speeds in BEV driving. DC fast charging is especially bad, but Prius Prime does not have it. Battery life also depends on how you store the battery. You should ideally store a battery at 30–40% SOC, and storing it at a high SOC is particularly bad. As for as the depth of discharge, I believe it is up to 87% at full HV-reserve depletion for Gen 5 Prius Prime.

 

I cannot find how to display the engine temperature. Any idea?

How can I turn off hybrid system in 2023 Prius?

 

I think you need something like ScanGauge II to show engine (or coolant in this case) temperature. I use that number to help me decide when to fire up the engine if the battery won't get me to my destination.

If you mean how do you turn off hybrid mode to drive in EV mode, you hit the button beside the shift lever that says "EV mode"

 

In the hybrid (regular Prius), you can not as that is basically the only mode it realistically operates in. There is a very limited EV mode function but it only works under very limited circumstances when temps, SOC, low speeds, distance, etc., parameters are all met. See owners manual.

Prius Prime? See above.

 

Is there an option in 2023 prius you can see how many miles you drove on engine only?

 

and/or hours

 

2023 Prime WALL to BATTERY LOSS?

New 2023 Prius Prime owner, trying to get some understanding of the traction battery charging. Yesterday's charge (with Toyota Level 1 120v CCID) showed 1465W at the wall, while Dr Prius showed 1135W at battery (4.15A*273.5v), Battery temp 97degF. (It is stinkin' hot here in south Florida even in my garage at night.)

Checking at various times in the charge seems to show I lose 25% to 29% to the charging power conversion, cable, heat, and battery cooling.

Interested in what others are seeing

 

That could be due to the battery cooling running. Are you seeing similar numbers now in winter?

 

Where is the 2024 Prius Prime battery and battery charger located. How are they cooled/heated ?

 

Battery is on the bottom of the car in front of the rear suspension. You can see it on a lift here:

The charger is inside under the expanded polypropylene bits in the back. You can see it in the pictures in the first post here:

2023 Prius Prime | PriusChat

Battery heats itself, or when plugged in there is 200-300W of electric heating it can use.

Battery cooling is via the A/C refrigerant circuit.

Charger is air cooled - there's a fan on top. Not clear to me how the air's ducted - presumably there's some shaping in the EPP and somewhere for it to go.

 

Thank You !

 

I have a 2024 Prius Plug-in Design Edition (UK option which has the 17" wheels). The full capacity of the battery is stated as 13.6 kWh by Toyota, so if the 87% discharge value at full HV-reserve depletion is correct that implies there is 13.6 x 0.87=11.8 kWh available for EV use with 1.8kWh being held in reserve for HV use. This seems in line with the battery size of most of the previous hybrid only Prius models, dating back to the original 2001 Classic Prius with its NiMH battery which was 1.8kWh, although I note that the Gen 5 hybrid only Prius which is available in the US but not in the UK or the rest of Europe only has a 0.91kWh battery accord ing to this review: https://www.motortrend.com/news/toyota-prius-hybrid-2024-car-of-the-year. As an aside I wonder why Toyota moved to a smaller battery on the latest hybrid only model? Obviously there'll be a slight saving in cost and weight, but I wnder if there's a downside in that the HV battery can't store or give out as much regen braking energy as previously?

The 11.8kWh value for EV use also seems to be in rough agreement with the values of miles/kWh and EV range when fully charged that the car displays. It's currently showing a total average of 4.1 miles/kWh for EV use (I mainly use EV around town) so that would work out as a maximum range of 4.1 x11.8=48.4 miles, which agrees well with the displayed 48 miles max EV range when fully charged.

One anomaly though regarding this is that the MyToyota smartphone app which communicates with the vehicle shows a battery charge status of 31% when the vehicle is down at zero EV range (obviously it shows 100% when fully charged). I can only surmise that the MyToyota app is showing an incorrect value of 31% battery charge status when the EV range is down to zero, because the previous discussion indicates it should be about 13%.