chrigu

hi
i have the smarty today now i make ecm update.
now the voltage going up to 14,9 volt on idle.
is normal?
weh have 23 C Fahrenheit outdoor.

thanks
chris

HappyGA

should be fine. Just your truck charging your batteries after the grid heater is kicking off, and from cranking the truck...

chrigu

hi the grid heater have 2 min? ist this correct?
i have approx 2 min 13-14,9 volts an then going to 14,8 volts constantly.

chris

P.J

I would call that normal too. You should be able to see the headlights dimming (if on) when the heater cycles also.

chrigu

yes the heads lights dimming approx 2 min.

chrigu

the maximum to charge e batterie actual 2,45 for one cell.
we have 6 cell 6x2.45 V = 14.7 V
is 14.9 not to high? ore normal with this outdoor temperatur?

chris

nebuniRAM

Sounds normal to me

chrigu

ok
i think also.

thanks

chris

chrigu

today i have 15 Volt.

MikeyB

I would verify what you're actually seeing with a VOM (volt meter). 15v charging after starting is ok for a short period of time.

MikeyB

chrigu

i have verify with fluke ,the engines ist hot

MikeyB

Once the batteries are fully charged the voltage should settle down to around 12.7-13v depending on the load.
My truck voltmeter is above 14v also after starting the truck and takes a while for it to drop back down.

MikeyB

chrigu

yes i have 12,7 volt the truck is off. but 15 volt when i have start the truck.