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[850] Best battery practices for infrequent use

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70
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erikv11
Posts: 11800
Joined: 25 July 2009
Year and Model: 850, V70, S60R, XC70
Location: Iowa
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Re: [850] Best battery practices for infrequent use

Post by erikv11 »

My 95's battery is living on this maintainer this winter https://www.amazon.com/Battery-Tender-S ... C90&sr=8-5
'95 854 T-5R, Motronic 4.4, 185k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 197k
'07 XC70, black, 205k
'07 XC70, willow green, 212k
'99 Camry V6 :shock: 153k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k
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P80GLT
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Year and Model: 850, 1997, GLT
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Post by P80GLT »

I use a CTEK trickle charger once a week for a few hours to keep the battery topped up. I don't leave it plugged in all the time as I did this with a brand new battery for 2 years and It killed the battery
Last edited by P80GLT on 26 Jan 2023, 01:46, edited 1 time in total.
1997 850 GLT website
2010 XC90 SE...SOLD
2005 V70 2.5T SE
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454cid  
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Year and Model: 1996 850
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Post by 454cid »

I have a pair of little Noco Genius1's that I like. They are trickle charger/maintainers. They are supposed to de-sulfate the battery too. I need to put one of them on my 850.
1996 850
1999 S70 GLT (sold after deer hit)

2010 Ford Focus SE
2006 Cadillac CTS
1996 Mercedes C220
1999 Chevrolet K3500
1969 Buick LeSabre Custom 400
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Mistericeman
Posts: 6
Joined: 21 January 2023
Year and Model: 1997 850s
Location: Manchester UK
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Post by Mistericeman »

On my late father's 850 wagon ....he used to disconnect the earth on the battery between uses (its only done 2000 miles between the mots for the last few years )

It had been parked since 2019 and the battery still had enough charge to light the dash up ...
Needed a lithium jump pack to start ...

BUT for more frequent use I'd fit one the battery isolators .
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