2003 SL500 APPLIANCE BATTERY

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2003 SL500 APPLIANCE BATTERY

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Mercedes Forums >> Mercedes Benz Models >> Mercedes SL Class >> 2003 SL500 APPLIANCE BATTERY

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2003 SL500 APPLIANCE BATTERY - 5/20/2008 4:54:45 AM

ab4jy

Posts: 21
Joined: 12/27/2007
Status: offline

CAN ANYONE ADVISE HOW LONG A FULLY CHARGED BATTERY,(THE TRUNK BATTERY)
SUPPORT THE ONLINE APPLICANCES WHEN THE CAR IS NOT DRIVEN?
I WAS TRAVELLING FOR 7 DAYS, WHEN I STARTED THE CAR, THE COMPUTER SAID , "APPLIANCE BATTERY OFF LINE"" OR SOMETHING LIKE THAT..
IS THIS AN INDICATION THE BATTERY IS GETTING SOFT.?
TNX
GLEN

Post #: 1

RE: 2003 SL500 APPLIANCE BATTERY - 5/20/2008 7:16:23 PM

sleepwalker

Posts: 7080
Joined: 4/12/2004
From: Philippine Islands
Status: offline

that depends on what you're using according to current consumption in amperes. if your battery is 120AH (ampere hour), it means that it will get totally discharge for 120 hours using 1 ampere load (12 watts). i might be wrong so correct me if i am.

your model got battery control module which monitors the battery charge level. if it goes below 11 volts, it will cut off other accessories to avoid difficulty in starting the engine. (e.g. sunroof, aircon, radio).

_____________________________

(in reply to ab4jy)

Post #: 2

RE: 2003 SL500 APPLIANCE BATTERY - 5/22/2008 9:53:40 AM

ab4jy

Posts: 21
Joined: 12/27/2007
Status: offline

SLEEPWALKER..
THANKS FOR THE INPUT....I BELIVE THE APPLIANCE BATTERY IS A 70AH..AND YOUR CALCS ARE CORRECT...I DIDNT HAVE NOR DID I TAKE TIME TO MEASURE THE CURRENT DRAW OF THE ONLINE APPLIANCES...BUT IF THE OFFLINE MONITOR TAKES IT OUT AT 11 VOLTS ,I CAN CALCULATE WHAT WOULD BE NORMAL TIME..
THANKS AGAIN
GLEN

(in reply to sleepwalker)

Post #: 3