Outer Limits 4x4 Board

Hi guys

i managed to accidentally flatten the dual cranking batteries in the cruiser. They are brand new N70 wet cell batteries, that were discharged to about 9 volts. They wouldnt crank the 1HZ over and struggle even with dash lights. Are they now likely to be farked/lifespan shortened as a result? any way to test or quantify it? any way to rehabilitate them?

I've tried searching by the way but outers search is a bit clunky

cheers.

MILO

I think the main thing is to limit the time period they are left sitting discharged, that's when the damage occurs.

Hi rockcrawler31, as murcod posted, get them on a charge as quickly as possible and until you charge them, you won’t know how they are.

You don’t need a big current charger just get them charging and if they are not damaged, they will fully charge and you will probably have no problems.

Taking batteries down to 9 volts is never recommended but it’s not uncommon for people to leave headlights on and take batteries down much lower and they have still been able to bring them back to life.

Get ya self a C-tek charger, they have a recondition setting that I have used to bring back two batteries my mechanic said where dead.

They are expensive but are the best around.

thanks for the replies guys

Corgie Carrier wrote:Get ya self a C-tek charger, they have a recondition setting that I have used to bring back two batteries my mechanic said where dead.

They are expensive but are the best around.

Couldn't agree more.
I have a C-tek and the recondition function is a lifesaver. I have reclaimed at least 9 batteries that were headed for the recyclers.

As stated above, get them on a charger ASAP. It doesen't really matter what charger, just as long as they are charging.

MICK77 wrote:

Corgie Carrier wrote:Get ya self a C-tek charger, they have a recondition setting that I have used to bring back two batteries my mechanic said where dead.

They are expensive but are the best around.

Couldn't agree more.
I have a C-tek and the recondition function is a lifesaver. I have reclaimed at least 9 batteries that were headed for the recyclers.

As stated above, get them on a charger ASAP. It doesen't really matter what charger, just as long as they are charging.

did a quick search on these chargers, any hints on where to get one cheaper ?

fleebay

Corgie Carrier wrote:fleebay

yeah only found the smaller ones on there though

Keep lookin! I got my 7amp one off there.

Corgie Carrier wrote:Keep lookin! I got my 7amp one off there.

was kinda looking for something a bit bigger ill keep looking though

How big are your batteries?

The 7 amp will charge a 225a/hr battery in 24 hours.

That is plenty big enough for any 4x4 battery.

Corgie Carrier wrote:How big are your batteries?

The 7 amp will charge a 225a/hr battery in 24 hours.

That is plenty big enough for any 4x4 battery.

Hi Ice, unless you have a particular reason for fast charging your battery(s) it’s actually better for the battery to have a slow ( low current ) recharge.

so which of these models is best for a vehicle that has two N70 cranking batteries in parallel? and do you charge both batts at once or should you disconnect the batteries and charge them separately?

Also, would a xs7000 that is suitable for big car batteries also be good for a small motorbike battery?

Ive got a truck so it has fairly large batteries in it

waiting 30hrs just isnt an option if it goes flat for some reason Eg leaving the 12v converter on

The xs7000 is recommended for batteries from 20ah to 225ah.

Charging in parallel should be ok, what is the total amp/hr? If above 225 you may need to go to the xs25000.

As far as a dead flat battery goes, the table on the box (xs7000) says that it can charge a dead flat battery, ready to drive, in 10 minutes.