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Search took 0.00 seconds. Search: Posts Made By: ranger58sb
Forum: Electrical: Batteries, Generators & Solar 20-08-2013, 14:33
Replies: 152
Views: 17,178
Posted By ranger58sb
Re: Size of Battery Charger

I had useful phone conversations with these guys about both batteries and chargers when we started changing over to AGMs: Home (https://www.odysseysoutheast.com/)

Those 1800 batteries looked...
Forum: Electrical: Batteries, Generators & Solar 18-08-2013, 12:45
Replies: 152
Views: 17,178
Posted By ranger58sb
Re: Size of Battery Charger

Yep, correct, one for amps and one for volts on each bank. When I really want to know, I go down below and use the multi-meter, and just did that yesterday after 4 hours rest from charging. 12.84v.
...
Forum: Electrical: Batteries, Generators & Solar 18-08-2013, 12:35
Replies: 152
Views: 17,178
Posted By ranger58sb
Re: Size of Battery Charger

Wasn't me complaining about the 37 pages; I like to read stuff like that. :)

I did mention the extra hour for 40 vs 60 amp charger. That was just a guess, and I think I said 3 vs 4... but in...
Forum: Electrical: Batteries, Generators & Solar 16-08-2013, 05:05
Replies: 152
Views: 17,178
Posted By ranger58sb
Re: Size of Battery Charger

Didn't mean to help spur side discussion of AGM versus other battery types.

I think I'm deciding "it ain't broke" for our situation. We are indeed "light duty" coastal cruisers, but mostly that...
Forum: Electrical: Batteries, Generators & Solar 15-08-2013, 10:21
Replies: 152
Views: 17,178
Posted By ranger58sb
Re: Size of Battery Charger

Yes, and we would have to run our current 40-amp charger for 3 hours (still ignoring the rate drop). Which is easy enough to do.

That doesn't get me anywhere near the C/40 thing for Odyssey...
Forum: Electrical: Batteries, Generators & Solar 15-08-2013, 10:18
Replies: 152
Views: 17,178
Posted By ranger58sb
Re: Size of Battery Charger

I actually meant it the other way around: start at 600, usually discharge that only by 20% (i.e., remaining with 80% of original capacity).

-Chris
Forum: Electrical: Batteries, Generators & Solar 15-08-2013, 09:08
Replies: 152
Views: 17,178
Posted By ranger58sb
Re: Size of Battery Charger

Thanks, I did see that. I understand the simple math, but I haven't yet twigged on to how that computes at a specific time or at a specific discharge state (if it does).

IOW, if I have only...
Forum: Electrical: Batteries, Generators & Solar 15-08-2013, 07:44
Replies: 152
Views: 17,178
Posted By ranger58sb
Re: Size of Battery Charger

I think I would understand the math better if I knew what "C" means. Overall capacity? Or amperage required to bring a bank up to full charge? Or...?

600-Ah discharged only 20% should mean...
Forum: Electrical: Batteries, Generators & Solar 15-08-2013, 05:38
Replies: 152
Views: 17,178
Posted By ranger58sb
Re: Size of Battery Charger

Sorry, slightly more diversion...

These from the Odyssey manual:

In order to achieve the full design cycle life of ODYSSEY batteries in cyclic applications the charge current must be a...
Forum: Electrical: Batteries, Generators & Solar 15-08-2013, 04:45
Replies: 152
Views: 17,178
Posted By ranger58sb
Re: Size of Battery Charger

Sounds like I should get on with my charger upgrade sooner rather than later, thanks for the wake-up call :)

In the meantime, I guess we've been lucky enough, maybe partly because we don't use...
Forum: Electrical: Batteries, Generators & Solar 15-08-2013, 04:19
Replies: 152
Views: 17,178
Posted By ranger58sb
Re: Size of Battery Charger

Yep, those are the batteries I have.

Before I installed the first bank (early 2006) the Odyssey guy reviewed my current set-up, and pronounced it acceptable. I don't remember seeing the 40%...
Forum: Electrical: Batteries, Generators & Solar 14-08-2013, 15:32
Replies: 152
Views: 17,178
Posted By ranger58sb
Re: Size of Battery Charger

Thanks. Yes, I knew about the 10% sizing rule of thumb, and in fact that's why I've been planning an upgrade anyway.

But I'm not sure how to understand Maine Sail's note about 40%...
...
Forum: Electrical: Batteries, Generators & Solar 14-08-2013, 14:25
Replies: 152
Views: 17,178
Posted By ranger58sb
Re: Size of Battery Charger

Hmmm.... I have two banks of 300Ah Odyssey Group 31s (plus a smaller gen starter... on a 3-bank 40-amp charger.

You're saying I'm under-amped (so to speak)? It happens I've been planning a...
Showing results 1 to 13 of 13

 
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