Trickle charging non-daily drivers

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive P2 platform cars sold as model years 2001-2007 (North American market year designations).

2001 - 2007 V70
2001 - 2004 V70 XC (Cross Country)
2004 - 2007 XC70 (Cross Country)
2001 - 2009 S60
2003 - 2007 S60 R
2004 - 2007 V70 R

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ashleyg82v702001
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Trickle charging non-daily drivers

Post by ashleyg82v702001 »

I'm looking into how to maintain my battery
s-l640 (1).jpg
s-l640 (1).jpg (53.69 KiB) Viewed 247 times
this is my plan is it a suitable and safe way of trickle charging I don't want to cook any modules by trickle charging this way
DSC_1869.JPG
It means I can fully lock the car and leave the charging cable protruding from under the bonnet all the time.
I'm using a genius 5
DSC_1870.JPG

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oragex
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Post by oragex »

If there's not enough answers, I'd also try on this UK forum, they use trickle chargers quite a bit https://www.volvoforums.org.uk/forumdisplay.php?f=19

ignatz  
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Post by ignatz »

I'm just curious how long it sits, before it gets driven. Over a week?
98 S70 T-5

ashleyg82v702001
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Post by ashleyg82v702001 »

Sometimes 10 or more days

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oragex
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Post by oragex »

Until you set up the charger, I would try driving around the block every week for 5-10 minutes. And maybe get an idea about your battery health, older batteries will still crank very well but may no longer keep a full charge (so it may discharge more while parked). These cars have an issue when the battery happens to go flat while parked, owners have reported the car would no longer start (once they recharge the battery), it seems the software in the central computer gets corrupted and it looses the key identification which is a hassle and $$ to have reprogrammed at Volvo.

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RickHaleParker
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Post by RickHaleParker »

If your battery is in poor health from sitting without use. You want a charger with a pulse mode to bring it back to life. This would be the 12V repair on the charger in the picture.

The charger I have will automatically detect poor health and go into pulse mode. I can tell when it is in pulse mode because the charge indicator pulses. I like to call this the Frankenstein mode. Because it brings dead things back to life. :lol:


You want a Float charger rather then a Trickle charger. Both are low current chargers but the Float charger will reduce the voltage to keep from damaging the battery after it is charged. A battery maintainer is a low current four stage float charger.

A Trickle charger does not have stages 3 & 4. It stays at stage 2 and will cook the battery if you leave it hooked up.
Stages 1 & 2 are the charging cycle, 3 & 4 are the maintaining cycle. A battery maintainer will switch between stages 3 & 4 as needed.
Battery_Maintainer_stages.png
Battery_Maintainer_stages.png (29.51 KiB) Viewed 204 times
1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000.
2004 S60R, B8444S TF80 AWD. Yamaha V8 conversion
2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0.

ashleyg82v702001
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Post by ashleyg82v702001 »

That's why I went with the genius 5 it's all charger, trickle maintainer and repair I've heard good things about the genius series, it's currently on a repair cycle.... I keep checking every 5-10 mins 😂

BlueRubber
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Post by BlueRubber »

I use a similar charger for my '02 v70 - it has a 5 stage charging cycle:
https://www.amazon.co.uk/Maypole-7423A- ... 75&sr=8-15

I would recommend connecting the charger to the battery in the boot to be safe.
You will probably be ok connecting where you have but it's riskier as all the current has to travel across to the other side of the car, who knows what modules etc it goes through.

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RickHaleParker
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Post by RickHaleParker »

ashleyg82v702001 wrote: Tue Jan 19, 2021 6:52 am I keep checking every 5-10 mins 😂

A watched pot never boils. Just let it rip until it indicates it is done.

My charger requires a disconnect and reconnect after a pluse charge "repair" .

Pulled a genuine Volvo battery out of a XC90 that only had 60K Miles on it. The battery was drained down to a few hundred Millivolts. It took over a month to recover it.

Tip: If the a battery is drained too low some charges cannot detect the battery and will not start charging. Solution: Jump start the process with a second voltage source. I use a 12V power supply. Connect charger and turn on. Touch 12V power supply to terminals for a couple of seconds then remove. The charger will start up and take over.
1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000.
2004 S60R, B8444S TF80 AWD. Yamaha V8 conversion
2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0.

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