Help with batteries

motort44 · 04 May 2020, 18:03

Hello,

First post, sorry if anything is wrong.

I've got a completely dead battery from sitting over the winter, its 120Ah starting, but used for equipment too. Any recommendations on a new one, brand etc?

Also has anyone got a monitor on the battery to keep check of it? I don't want to buy another new one next year.

Cheers

Wightdiver · 04 May 2020, 19:38

Quote:

Originally Posted by motort44

Hello,

First post, sorry if anything is wrong.

I've got a completely dead battery from sitting over the winter, its 120Ah starting, but used for equipment too. Any recommendations on a new one, brand etc?

Also has anyone got a monitor on the battery to keep check of it? I don't want to buy another new one next year.

Cheers

I had a similar problem, completely dead and would not accept a charge. I noticed that my battery charger had a "recondition" feature, ran this and it was perfect, Five years later its still fine, worth a try?

motort44 · 04 May 2020, 20:06

Do you reckon a 5A Noco car one would do it?

Just got an ad for this as I've been searching for a monitoring thing, has anyone tried this?
https://chargemetrix.com/

Allye · 04 May 2020, 20:39

If you’re trying to revive a completely dead battery you want as lower amps as possible.

Stresspill · 04 May 2020, 21:58

Smart chargers usually are too smart to charge a battery with lower than 10 volts. Connecting a healthy battery in parallel and then charging can up the voltage enough, that you can continue charging with a smart charger. My Exide Dual drained completely empty and this helped to get if working again. Has been fine since..

GuyC · 04 May 2020, 22:46

The CTEK MXS 7.0 has a recondition function to 'restore and recondition' deeply discharged batteries.

boristhebold · 05 May 2020, 08:07

I have a ring 12a smart charger, really pleased with it, has a reconditioning function, easy to use, used it for boat batteries and car batteries. Try halfords.

https://www.halfords.com/motoring/ba...se-116453.html

Wightdiver · 05 May 2020, 08:44

Quote:

Originally Posted by motort44

Do you reckon a 5A Noco car one would do it?

Just got an ad for this as I've been searching for a monitoring thing, has anyone tried this?
https://chargemetrix.com/

Sorry, not a battery expert, I just know that my charger had a recondition feature that worked. Looking at the other reply it appears that many chargers have it too.

Andy

GuyC · 05 May 2020, 14:43

Quote:

Originally Posted by motort44

Do you reckon a 5A Noco car one would do it?

https://chargemetrix.com/

If it's one of the Genius ones, then it does have a restore function.

motort44 · 05 May 2020, 16:32

Yes it is a genius noco, I will give it a shot and see.

babbot1 · 05 May 2020, 17:30

I'd recommend getting a decent digital volt meter to monitor health. Make sure the % of accuracy is decent. They aren't too expensive. I just bought one for about $12 with a variance of 0.2%. Haven't tried this one out yet but I normally use a mulit meter. This will be permanently installed.

It depends on the battery chemistry (AGM, Wet Cell...) but in general if the battery has been fully charged then at rest for about 12 hours non used or charging it is 100% around 12.6+ volts down to 0% around 11 volts.

There a bunch of charts on the net you can find with the exact figures for the battery you have. It's not perfect but you can get an estimate if its dead.

The other thing you can do is bring it to a shop and have it load tested but that's a pain.