Disconnect cranking battery to charge ?

Submitted: Friday, Jul 31, 2009 at 09:26

ThreadID: 71104 Views:2908 Replies:4 FollowUps:4

This Thread has been Archived

WBS

I am seeking opinions on what is best to do. I have a 80 series LC that is quite often parked in the garage for weeks on end as we don't need to use it except for trips. The cranking battery runs down so I now have a smart charger to keep the battery charged so as to not shorten its life. Should I disconnect the negative lead from the battery or is it ok to charge with the battery fully connected?.

Thanks
WBS

Member
My Profile My Position Send Message

Back Expand Un-Read 0 Moderator Share

Reply By: Geoff (Newcastle, NSW) - Friday, Jul 31, 2009 at 09:33

Friday, Jul 31, 2009 at 09:33

Hi,
If you have a smart charger just connect it up and leave it.

The charger only does what your alternator does voltage wise so it's not going to harm anything.

Geoff

Geoff,
Landcruiser HDJ78,
Grey hair is hereditary, you get it from children. Baldness is caused by watching the Wallabies.

Lifetime Member
My Profile My Blog Send Message

AnswerID: 376932

Follow Up By: vk1dx - Friday, Jul 31, 2009 at 10:46

Friday, Jul 31, 2009 at 10:46

Hi Geoff

I gather that would also be okay for a dual battery system. No isolation between them. Series 100 TD Toyota with factory dual batteries.

Am I correct?

Phil

FollowupID: 644362

Follow Up By: Geoff (Newcastle, NSW) - Friday, Jul 31, 2009 at 11:36

Friday, Jul 31, 2009 at 11:36

Sure would!

Geoff

Geoff,
Landcruiser HDJ78,
Grey hair is hereditary, you get it from children. Baldness is caused by watching the Wallabies.

Lifetime Member
My Profile My Blog Send Message

FollowupID: 644369

Follow Up By: vk1dx - Friday, Jul 31, 2009 at 12:22

Friday, Jul 31, 2009 at 12:22

Thought so. After all two batteries in parallel is the same a s one larger one. Hey?

Cheers

FollowupID: 644373

Follow Up By: Geoff (Newcastle, NSW) - Friday, Jul 31, 2009 at 13:23

Friday, Jul 31, 2009 at 13:23

That's exactly what the charger see's, one big battery.

Geoff

Geoff,
Landcruiser HDJ78,
Grey hair is hereditary, you get it from children. Baldness is caused by watching the Wallabies.

Lifetime Member
My Profile My Blog Send Message

FollowupID: 644380

Reply By: ABR - SIDEWINDER - Friday, Jul 31, 2009 at 10:52

Friday, Jul 31, 2009 at 10:52

Hi WBS

No need to disconnect the battery/s make sure the charger floats at no more than 13.8V

Keep the electrolyte topped up if they are not M/free.

Do a weekly inspection if possible.

Regards

Derek from ABR

AnswerID: 376961

Reply By: get outmore - Friday, Jul 31, 2009 at 12:39

Friday, Jul 31, 2009 at 12:39

battery shouldnt be going flat (depending on your definition of weeks)

I would park mine up for a fortnight at a time and never had an issue starting it

now it only sits for 8 days between starts

AnswerID: 376977