Understanding Battery SOH? Second hand plug in hybrid

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Nathanishere

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#300807 5-Oct-2022 21:19

Are there any articles on the web about how much longer a car hybrid battery will last based on its State of Health? There are quite a few 2nd hand PHEV cars for sale with batterys around 60% SoH. At first thought you think they still have 60% life in them but I feel this is unrealistic. When is a battery effectively useless in terms of SoH and needs replacing and is there a way to know how much the battery has left in terms of charges or time based on its SoH? I'm looking at PHEV Outlanders in particular.

Batman

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#2977991 5-Oct-2022 22:22

depends on how much range you need

PHEV means you charge the car and use like a pure electric car.

so if the manufacturer claims a new PHEV will go 70km pure electric when new (100% SOH)

that means a real world pure electric range of about 50km upwards

so 60% SOH for that car would be 30 to 45km.

if you mean when will it get to 0% SOH ... who knows

it's up to you and what your needs are and how much you are paying for the car

if the car is $1 with 0% SOH I'd still buy it

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Nathanishere

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Wannabe Geek

#2977998 5-Oct-2022 23:01

Is it a linear scale? 30% battery soh = 30% the km range of new. Or does it drop off more quicker? The other question was battery degradation. Does a 5 year old car with a battery at 50% mean it will be at 0% in 10years assuming it is driven and charged the same way? Or does the drop off or slow down...

Batman

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#2977999 5-Oct-2022 23:21

linear yes

degradation - well ... crystal ball ... you'd assume if same treatment same degradation but i don't know

what i know is if you have lower capacity you will be charging it more ...

PS - drives a nissan leaf w 50% SOH