Battery percentage charge to more than 80%

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Jammin75
Posts: 3
Joined: Sun Sep 20, 2020 10:16 pm
Vehicle: Mondeo, 2l diesel, 163bhp,2013

Battery percentage charge to more than 80%

Post by Jammin75 »

Is there anyway in forscan to change the percentage that battery charges to ...mine stops charging at 80% and would like to change it to a higher value
(mk4.5 2013 mondeo uk model) plus will disconecting the bms seonsor on the negative battery terminal make it charge more...cold starts are slow as the percentage of the battery seems to drop to around 70% over night...new battery fitted and bms reset done 6 months ago and a another one fitted 3 months as i thought the new battery was starting to go bad...but seems its a problem with the battery not charging enough...i also tested for a parasitic drain and all is normal.
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Andyfocus
Posts: 584
Joined: Sun Sep 16, 2018 1:35 pm
Vehicle: ford focus 1.0 ecoboost (100ps) 2017

Re: Battery percentage charge to more than 80%

Post by Andyfocus »

usual problem from ford , you have to drive around with side lights on or it doesnt charge correctly due to fuel saving via reduced loads on the engine ( disconnects alternator from charging )
i am the same as you just a forscan user still learning .
The search function is there for a reason use it.
no you can no longer pm me with your 1 or 0 posts so dont try.
Keithmac
Posts: 166
Joined: Fri Nov 23, 2018 6:51 pm
Vehicle: MK2 Kuga 2l dcti 163 Powershift 2013.

Re: Battery percentage charge to more than 80%

Post by Keithmac »

We have to have headlights on when towing with our Mk2 Kuga or the "SMART" alternator control cocks the caravan up.

Some say you can disconnect the SMART controller wire from the Alternator or pull a fuse?.
Slaawek77
Posts: 10
Joined: Thu Sep 03, 2020 4:21 pm
Vehicle: Ford Focus ST 2,0 MY2018

Re: Battery percentage charge to more than 80%

Post by Slaawek77 »

Disable BMS in central configuration - the battery will be charged more than 80%.
Ecmbuster
Posts: 1303
Joined: Sun Mar 15, 2015 4:08 am
Vehicle: Volvo Bertone and two Motorcyles
Location: On a spinning rock

Re: Battery percentage charge to more than 80%

Post by Ecmbuster »

Consider alternator output with an Amp clamp and multimeter combination.
Attach a carbon pile of at least 500 Amps and dial the carbon pile gently.
Watch the Amp clamp and multimeter combination to view the PCM controlled alternator output.
View the FORScan PIDS for generator duty cycle and voltage sense.
Anything extra or non OEM wiring attachments must NOT be attached to the battery negative post if the negative cable is monitored.
The same also goes with the positive cable being monitored. Attach devices to the fuse panel only.
If so, create another negative ground (earth) plane to the body (a secured and robust connection) with another stable and clean ground (earth) connection to the engine block.
Do not ask for help in PM. Use the forum to ask and answer questions!
k4dje
Posts: 1
Joined: Mon May 25, 2020 8:20 pm
Vehicle: mustang 5.0 2017

Re: Battery percentage charge to more than 80%

Post by k4dje »

I just edited the 80 and changed it to 100.
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