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About charging the Start battery

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11K views 18 replies 8 participants last post by  jlo  
#1 ·
I just ordered a battery charger from Amazon below trying to keep the battery in a healthy state.

With the current work from home/ongoing/potential lockdowns, I merely drive the car once a week for less than 30-min...I am wondering:
1. How often should I charge the battery?
2. Referencing to the user manual here for charging, the postive of the charger should be connected to the postive point (#1 from screenshot below) in the engine bay and negative of the charger connects to the negative point in the engine bay (#2 from the screenshot), right?
3. How long does it normally take for the charging, hours? Would not prefer to leave it charged over night...
126643

Thanks,
/S
 
#2 ·
1.) At least once a week
2.) Correct
3.) Depends on how low the charge is

I usually just connect mine up it is going to sit for more than 2 days or if I know the last drive had a bunch of start/stop and not much recharge time. Mine has been in the garage connected for three days now. It took I think around 8 hours for the charger to go green this time. Some days it only takes an hour while other days it takes 8-12.


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#3 ·
1.) At least once a week
2.) Correct
3.) Depends on how low the charge is

I usually just connect mine up it is going to sit for more than 2 days or if I know the last drive had a bunch of start/stop and not much recharge time. Mine has been in the garage connected for three days now. It took I think around 8 hours for the charger to go green this time. Some days it only takes an hour while other days it takes 8-12.

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Charged for 2-day…I donot think I am brave enough for that …:) but I guess I can charge it for hours and disconnect and then continue to charge next day if not turning green. I would likely to work from garage while charging…
 
#4 ·
After a full charge, why not put on a maintainer and forget about it until your next drive?
 
#7 ·
1). If your driving the vehicle more than a few days a week, probably not necessary. For me = if it's going to sit for close to a week or more, plug it in.
2). Correct.
3). depends on how discharged the battery is and if the maintainer goes into recondition mode it will definitely take some time. my unit takes 24hrs to complete the re-con cycle.

The charger you listed has float/maintain and re-conditioning modes, so leaving it plugged in for extended durations (days, weeks, etc. ) should not be an issue.
I have a Dewalt unit mounted on the wall along with a timer control switch. I too was a bit skeptical about leaving the unit plugged in running indefinitely so I picked up a timer control from Amazon.
View media item 92002
I recently had the S60 plugged in charging/maintaining running around the clock for close to two weeks while I was trying to get the car set up for my wife, it was fine and kept the battery topped off while I was working on the car.
 
#8 ·
I bought the same charger and it was tremendously helpful over the winter when both our cars sat for long periods of time. I could always tell when the start/stop battery on my 2020 V60CC because that function would cease until I either charged the battery or ran the car for a while. I also use it on my wife's 2013 XC70 which has an older battery that shows the "low charge" message if it sits too long.

I plug them both into a garage socket and walk away for 24-48 hours. It's a trickle charger/maintainer. It knows when to top off, and then turn itself off.
 
#9 ·
I bought the same charger and it was tremendously helpful over the winter when both our cars sat for long periods of time. I could always tell when the start/stop battery on my 2020 V60CC because that function would cease until I either charged the battery or ran the car for a while. I also use it on my wife's 2013 XC70 which has an older battery that shows the "low charge" message if it sits too long.

I plug them both into a garage socket and walk away for 24-48 hours. It's a trickle charger/maintainer. It knows when to top off, and then turn itself off.
1). If your driving the vehicle more than a few days a week, probably not necessary. For me = if it's going to sit for close to a week or more, plug it in.
2). Correct.
3). depends on how discharged the battery is and if the maintainer goes into recondition mode it will definitely take some time. my unit takes 24hrs to complete the re-con cycle.

The charger you listed has float/maintain and re-conditioning modes, so leaving it plugged in for extended durations (days, weeks, etc. ) should not be an issue.
I have a Dewalt unit mounted on the wall along with a timer control switch. I too was a bit skeptical about leaving the unit plugged in running indefinitely so I picked up a timer control from Amazon.
View media item 92002
I recently had the S60 plugged in charging/maintaining running around the clock for close to two weeks while I was trying to get the car set up for my wife, it was fine and kept the battery topped off while I was working on the car.
Wonder if the float/maintain and re-conditioning mode selection would be manually or automatically..?
 
#15 ·
I've never used a battery charger like this but am interested because I could use it for my S90 as well as my John Deere riding lawnmower. If I understand correctly, my S90 has two batteries. If I use this charger, does it charge both batteries?