Reply
 
Thread Tools Search this Thread
 
Old 04 May 2020, 12:03   #1
Member
 
Country: UK - England
Town: Southampton
Boat name: Noname
Make: Brig
Length: 4m +
Join Date: May 2020
Posts: 3
Help with batteries

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
__________________

__________________
motort44 is offline   Reply With Quote
Old 04 May 2020, 13:38   #2
Member
 
Wightdiver's Avatar
 
Country: UK - England
Town: Fareham
Boat name: Red Dog
Make: Porters Renegade
Length: 6m +
Engine: 150 HP Yamaha
Join Date: May 2010
Posts: 563
Quote:
Originally Posted by motort44 View Post
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?
__________________

__________________
Wightdiver is offline   Reply With Quote
Old 04 May 2020, 14:06   #3
Member
 
Country: UK - England
Town: Southampton
Boat name: Noname
Make: Brig
Length: 4m +
Join Date: May 2020
Posts: 3
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/
__________________
motort44 is offline   Reply With Quote
Old 04 May 2020, 14:39   #4
Member
 
Country: UK - England
Town: South West
Make: Zapcat
Length: 4m +
Engine: 50 tohatsu
Join Date: Mar 2020
Posts: 269
If you’re trying to revive a completely dead battery you want as lower amps as possible.
__________________
Allye is offline   Reply With Quote
Old 04 May 2020, 15:58   #5
Member
 
Country: Finland
Town: Helsinki
Boat name: Harmaakarhu
Make: Avon SR6
Length: 6m +
Engine: Yamaha F150
Join Date: Feb 2009
Posts: 96
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..
__________________
Stresspill is offline   Reply With Quote
Old 04 May 2020, 16:46   #6
Member
 
Country: UK - England
Town: Waterlooville
Boat name: Tickler
Make: Halmatic P22
Length: 6m +
Engine: Inboard Diesel 140HP
MMSI: 235115642
Join Date: Sep 2015
Posts: 1,355
RIBase
The CTEK MXS 7.0 has a recondition function to 'restore and recondition' deeply discharged batteries.
__________________
GuyC is offline   Reply With Quote
Old 05 May 2020, 02:07   #7
Member
 
boristhebold's Avatar
 
Country: UK - England
Length: 7m +
Join Date: Aug 2009
Posts: 1,619
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
__________________
boristhebold is offline   Reply With Quote
Old 05 May 2020, 02:44   #8
Member
 
Wightdiver's Avatar
 
Country: UK - England
Town: Fareham
Boat name: Red Dog
Make: Porters Renegade
Length: 6m +
Engine: 150 HP Yamaha
Join Date: May 2010
Posts: 563
Quote:
Originally Posted by motort44 View Post
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
__________________
Wightdiver is offline   Reply With Quote
Old 05 May 2020, 08:43   #9
Member
 
Country: UK - England
Town: Waterlooville
Boat name: Tickler
Make: Halmatic P22
Length: 6m +
Engine: Inboard Diesel 140HP
MMSI: 235115642
Join Date: Sep 2015
Posts: 1,355
RIBase
Quote:
Originally Posted by motort44 View Post
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.
__________________
GuyC is offline   Reply With Quote
Old 05 May 2020, 10:32   #10
Member
 
Country: UK - England
Town: Southampton
Boat name: Noname
Make: Brig
Length: 4m +
Join Date: May 2020
Posts: 3
Yes it is a genius noco, I will give it a shot and see.
__________________
motort44 is offline   Reply With Quote
Old 05 May 2020, 11:30   #11
Member
 
Country: USA
Make: AB
Length: 3m +
Engine: outboard, 40hp
Join Date: Feb 2016
Posts: 41
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.
__________________

__________________
babbot1 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




All times are GMT -5. The time now is 19:29.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.