PHEV Charging

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JSB

Active member
Joined
May 21, 2018
Messages
36
Location
West Yorkshire, UK
Hi folks, on several occasions I have come across advice not to leave the PHEV fully charged for lengthy periods of time as it is apparently not good for the battery.

Is there any truth in this advice and, if so, how long is too long to leave it fully charged?

Thanks.
 
In general this advice is correct for small Li-Ion batteries like cameras and cell-phones. For the PHEV it seems not to be a consideration, as the battery is industrial-grade and will never be charged up to its full capacity anyway.
 
I've pasted the relevant warnings from the Owners Handbook - It's more or less the same text in MY19 and MY14.

Code:
The fuel in the fuel tank may not be consumed and it may stagnate for a long time
depending on the use situation of the vehicle, the quality of fuel may change, and it
may have a bad influence on the engine or
the parts of a fuel system.
Observe the following instructions for prevention.
• Start the engine more than once every 3
months by activating the battery charge
mode.

If your vehicle is not used for a long
time, check the drive battery level display every 3 months.
If the drive battery level display shows
0, charge the battery until some indication appears. Alternatively, start the
Plug-in Hybrid EV System and turn on
the ready indicator.
The engine will then automatically start
to charge the drive battery.
Wait until the engine automatically
stops, then put the operation mode of the
power switch in OFF
 
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