That is sort-of backwards. I have gel batteries. They are *very* sensitive to 
overcharging and can die very fast from too much voltage. OTOH AGMs will 
tolerate higher charging voltages, hence their popularity as drop-in 
replacements in airplanes, boats, and cars, but die pretty fast from 
undercharging. They also, even if charged correctly, have a lower cycle-life 
than gels. Both AGMs and gels contain no liquid to spill.
Golf cart batteries are the cheapest per AH and can withstand all manner of 
abuse. If you have room for them and their containers, something to think about.
Joe
Coquina

From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Marek 
Dziedzic via CnC-List
Sent: Wednesday, April 04, 2018 12:43 PM
To: cnc-list@cnc-list.com
Cc: Marek Dziedzic <dziedzi...@hotmail.com>
Subject: [EXTERNAL] Re: Stus-List Marine Batteries

I would suggest thinking very hard if you need AGMs. They are more expensive 
and require much better management and maintenance (i.e. quite specific 
charging regime). In normal use, they won't last longer, either.

If you are forced to have a battery in the enclosed compartment (in your 
cabin), you may consider a gel battery - non-spillable and virtually, no 
off-gassing. From what I understand, they are less sensitive to variations in 
charging voltage (you can use a standard charger).

Many people had decent results with standard wet lead-acid deep cycle batteries 
from Costco. Since you are in Toronto, personally, I would stay far, far away 
from Canadian Tire.

Others would probably chime in on various brands that do (or don't) work on 
their boats.

Marek
1994 C270 Legato
Ottawa, ON

From: CnC-List 
<cnc-list-boun...@cnc-list.com<mailto:cnc-list-boun...@cnc-list.com>> On Behalf 
Of Glen Eddie via CnC-List
Sent: Wednesday, April 4, 2018 12:04
To: cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>
Cc: Glen Eddie <ged...@torkinmanes.com<mailto:ged...@torkinmanes.com>>
Subject: Stus-List Marine Batteries

Hello everyone,

I need to replace my house battery and my engine battery (atomic 4).  I also 
have a dedicated battery for my Windless (don't ask).

Any suggestions.  I currently have 31 AGMs.

Thanks everyone.

________________________________
Glen Eddie

Tel:  416-777-5357

Fax:  1-888-812-2557

ged...@torkinmanes.com<mailto:ged...@torkinmanes.com>

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