What!!!!!? On Jun 24, 2016 9:02 AM, "Danny Haughey via CnC-List" <cnc-list@cnc-list.com> wrote:
> OK, it turns out the ground from the charger was attached to the positive > battery terminal. It's working great now! > ---------- Original Message ---------- > From: Josh Muckley via CnC-List <cnc-list@cnc-list.com> > To: "C&C List" <cnc-list@cnc-list.com> > Cc: Josh Muckley <muckl...@gmail.com> > Subject: Re: Stus-List Battery charger getting warm > Date: Wed, 22 Jun 2016 14:48:54 +0000 > > <p dir="ltr">For standard lead-acid batteryies ~10.5v is pretty much the > definition of 0% charge and can seriously diminish the number of cycles > remaining in the battery's life span. That is if you can get it to > accept a charge at all. ~11.6v is about 50% and 12.7v is full charge > 100%. The deeper you discharge a battery the fewer cycles it has in > it's life span. Often times deep cycle batteries are rated for 200 > cycles down to 50% and back up. Less deep of a discharge = more cycles. > So you may have taken a few cycles off but they will likely remain > functional for many more years. > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > On Jun 22, 2016 8:22 AM, "Danny Haughey via CnC-List" < > cnc-list@cnc-list.com> wrote:The batteries were new last July. I charged > them with my home charger separately a few weeks ago with no issue. I had > forgotten to turn the battery switches off and they dropped to about 11v. > So, this time, I decided to get an adapter and use the shore power outlet > to run the on board charger. It's the first time I've tried it. I > am trying to top up 3 group 27s. > > I believe the batteries are fine. > > DannyOn Jun 22, 2016 12:42 AM, Russ & Melody via CnC-List < > cnc-list@cnc-list.com> wrote: > > > > Hi Pete, > > > > If the batteries are shot, don't they get warm with hard charging? > Danny's original message says the batteries are not warm. > > > > Maybe he is deep cycling the battery bank. > > > > Cheers, Russ > > > > > > > > At 09:27 PM 21/06/2016, you wrote: > >> > >> Content-Type: multipart/alternative; > >> boundary="----=_NextPart_000_01F9_01D1CC14.71395510" > >> Content-Language: en-us > >> > >> Dan – > >> This may be an indication that your batteries are shot. The charger is > working to give them a juice and they’re just not having it. Take a look > at them before you change your charger. But also look for loose > connections. > >> > >> > >> > >> > >> From: CnC-List [ mailto:cnc-list-boun...@cnc-list.com] On Behalf Of > Russ & Melody via CnC-List > >> Sent: Tuesday, June 21, 2016 11:10 PM > >> To: cnc-list@cnc-list.com > >> Cc: Russ & Melody > >> Subject: Re: Stus-List Battery charger getting warm > >> > >> > >> Hi Danny, > >> > >> I like how you find it goes grey, most of your fellows call it gray. :) > >> > >> Anyhow, the meter pegs over 30 amps, let's say 35 for this > discussion... and at 15 volts we're looking at something near 500 watts > to the batteries. If it's a 90 percent efficient battery charger then > it has to dump 50 watts or so into the surroundings. > >> > >> For perspective and giggles, turn on a 40 watt light bulb and see how > long you can hang on to it. Yow! > >> > >> A machine at 160 F, you can touch but not hold your hand on for very > long, 180 F is tolerable for less than a second. From your description, I > suggest the battery charger is operating around 150 F if you can put > pressure on it with your hand. That is not a worry if it's like that > for a few hours. I am also assuming ambient cooling (no fan). > >> > >> Cheers, Russ > >> Sweet 35 mk-1 > >> > >> > >> At 05:20 PM 21/06/2016, you wrote: > >> > >> Hi guys, > >> When I turn the battery charger on it greys very warm. The Guage pins > all the way past 30 amps. > >> > >> It is not too hot to touch but too hour to hold your hands on for very > long. The batteries are not warm and seem to have taken some charge over > a couple hours. > >> > >> It's this normal? I don't like that heat... > >> _______________________________________________ > >> > >> This list is supported by the generous donations of our members. If you > like what we do, please help us pay for our costs by donating. All > Contributions are greatly appreciated! > _______________________________________________ > > This list is supported by the generous donations of our members. If you > like what we do, please help us pay for our costs by donating. All > Contributions are greatly appreciated! > > > _______________________________________________ > > This list is supported by the generous donations of our members. If you > like what we do, please help us pay for our costs by donating. All > Contributions are greatly appreciated! >
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