Flat battery.

jasons6930 · Oct 2nd, 2022, 13:31

Hi guys,

Battery has gone flat due to lack of use over the past few months and I have a c-tech battery charger.

Do I need to disconnect the battery to charge it or can I leave it connected?

Cheers

griston64 · Oct 2nd, 2022, 13:48

Quote:

Originally Posted by jasons6930

Hi guys,

Battery has gone flat due to lack of use over the past few months and I have a c-tech battery charger.

Do I need to disconnect the battery to charge it or can I leave it connected?

Cheers

Leave it connected. I put the earth onto a bolt in the inner wing

Mines sitting in the garage connected up just now

jasons6930 · Oct 2nd, 2022, 15:03

Thanks.

Well, as it turns out it started first push of the button! To be fair, the battery is around 6 months old and I leave the car unlocked so I guess there isn’t any load on the battery once everything has gone to sleep and shut down.

Clan · Oct 2nd, 2022, 16:57

Quote:

Originally Posted by jasons6930

Thanks.

Well, as it turns out it started first push of the button! To be fair, the battery is around 6 months old and I leave the car unlocked so I guess there isn’t any load on the battery once everything has gone to sleep and shut down.

There should be a small drain when all locked up and gone to sleep . Less than 50 ma. around 10 to 15 ma usually so insignificant

Tannaton · Oct 2nd, 2022, 23:49

You’re best leaving it connected, if the battery has been flat for a while I would use the recond program first and then a normal charge after a day or so.

SnineT · Oct 2nd, 2022, 23:51

Never use the negative battery terminal to connect a charge or booster cable, follow what Gris said.

Oct 2nd, 2022, 13:31	#1
jasons6930 Member Last Online: Mar 12th, 2024 16:27 Join Date: Jan 2022 Location: Hants	Flat battery. Hi guys, Battery has gone flat due to lack of use over the past few months and I have a c-tech battery charger. Do I need to disconnect the battery to charge it or can I leave it connected? Cheers __________________ XC70 D5 Geartronic 2011

Oct 2nd, 2022, 15:03	#3
jasons6930 Member Last Online: Mar 12th, 2024 16:27 Join Date: Jan 2022 Location: Hants	Thanks. Well, as it turns out it started first push of the button! To be fair, the battery is around 6 months old and I leave the car unlocked so I guess there isn’t any load on the battery once everything has gone to sleep and shut down. __________________ XC70 D5 Geartronic 2011

Oct 2nd, 2022, 23:49	#5
Tannaton Bungling Amateur Last Online: Today 09:41 Join Date: Aug 2014 Location: Beverley, East Yorks	You’re best leaving it connected, if the battery has been flat for a while I would use the recond program first and then a normal charge after a day or so. __________________ 2011 XC90 D5 Executive 2003 C70 T5 GT 2012 Ford Ranger XL SC 1977 Triumph Spitfire 1500 1976 Massey Ferguson 135

Oct 2nd, 2022, 23:51	#6
SnineT Extrahumanestrial Last Online: Feb 13th, 2023 19:02 Join Date: Jun 2022 Location: Budapest	Never use the negative battery terminal to connect a charge or booster cable, follow what Gris said.

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