Also depends on which battery is supposed to be the first one charged. On Mon, Jul 16, 2018 at 9:36 AM, Josh Muckley via CnC-List < cnc-list@cnc-list.com> wrote:
> I don't know what type of setup you have regarding the house and starting > battery. Is it a switch, acr, or echo-charge? Depending on the answer, > yes a failed start battery could affect the entire system. > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > > > On Mon, Jul 16, 2018, 8:20 AM Danny Haughey via CnC-List < > cnc-list@cnc-list.com> wrote: > >> well, the battery was showing 12.7 by the time I got it back to the >> boat. It would not start the engine. I did jump start it and found the >> alternator was putting out 14.4 volts. So I ran out and bought an >> interstate starting battery. I installed that, started the engine and got >> 14.4 volts at the battery terminals with the engine running. Then, I went >> sailing! >> >> Anyway, my question now is, if the starting battery was not taking the >> charge, would the alternator just keep trying to charge the starting >> battery and never reach a full charge so never send anything to the house? >> In essence, the spent battery was the break in the system like a bucket >> with a big hole in it? >> >> On 7/15/2018 8:50 AM, Josh Muckley via CnC-List wrote: >> >> Disconnect for 24 hours and then take the voltage again. >> >> Josh >> >> >> >> On Sun, Jul 15, 2018, 8:47 AM Danny Haughey via CnC-List < >> cnc-list@cnc-list.com> wrote: >> >>> 12.9 reading with charger off. It's a smart charger and will slow and >>> then stop charge as battery charges. It is sitting with charger attached >>> just reading voltage >>> >>> >>> >>> Thanks, >>> Danny >>> -------- Original message -------- >>> From: Josh Muckley via CnC-List <cnc-list@cnc-list.com> >>> Date: 7/15/18 8:04 AM (GMT-05:00) >>> To: cnc-list@cnc-list.com >>> Cc: Josh Muckley <muckl...@gmail.com> >>> Subject: Re: Stus-List Charging issues >>> >>> 12.9v on or off the charger? That's too low if on the charger. Even >>> the smallest trickle chargers put out ~13.5v >>> >>> It is possible to have a one of the six cells go bad, reducing the >>> battery's appropriate full charge voltage to 10.6 instead of 12.7 the >>> charger is dumb and keeps trying to put as much as 14.7 into the battery. >>> This extra voltage overcharges the battery and boils off electrolyte. >>> Under this condition the battery voltage may never get to 14.7 but it can >>> easily get to 12.7. It will quickly decay and stabilize near 10.6-ish when >>> the charger is removed. This may take a few hours to occur. If/When a >>> load is applied the voltage will drop dramatically and stabilize near >>> 10.6v. If this is the case then you need a new battery. >>> >>> Josh Muckley >>> S/V Sea Hawk >>> 1989 C&C 37+ >>> Solomons, MD >>> >>> >>> >>> >>> On Sun, Jul 15, 2018, 7:29 AM Danny Haughey via CnC-List < >>> cnc-list@cnc-list.com> wrote: >>> >>>> Hi Rick, >>>> Thank you for the insight. The start battery showed just 12.1 when I >>>> put it on the charger. I just went out and battery now shows full at 12.9 >>>> volts. >>>> >>>> It seems like the charge isn't getting to the batteries. This is one >>>> system I haven't dug into yet. I guess that's going to change... >>>> >>>> I think I need to find a diagram somewhere >>>> >>>> >>>> >>>> Thanks, >>>> Danny >>>> >>>> -------- Original message -------- >>>> From: Rick Brass via CnC-List <cnc-list@cnc-list.com> >>>> Date: 7/14/18 11:09 PM (GMT-05:00) >>>> To: cnc-list@cnc-list.com >>>> Cc: Rick Brass <rickbr...@earthlink.net> >>>> Subject: Re: Stus-List Charging issues >>>> >>>> Generally, yes, if you are showing about 14 volts when the engine is >>>> running, the alternator is probably OK. >>>> >>>> >>>> >>>> When you say the start battery is not charging, is it safe to assume >>>> that the start battery will not start the engine? >>>> >>>> >>>> >>>> Under normal circumstances, and depending on the Amp-Hour capacity of >>>> the start battery, it will probably never get below 95% to 99% state of >>>> charge. (Unless, of course, you are using it to also power your house >>>> loads.) >>>> >>>> >>>> >>>> For example, the 36 HP Universal in my 38 draws 175 amps for about 30 >>>> seconds in starting, or about 1.4 AH. That is about 1.3% discharge on the >>>> 105AH deep cycle battery I use for starting. (And only for starting except >>>> in an emergency) >>>> >>>> >>>> >>>> So the start battery is capable of reaching full charge in just a few >>>> minutes of engine run time, and the full output from the alternator then >>>> gets directed to the house bank if that is at a lower state of charge. If >>>> both are fully charged, the current flow just creates heat. >>>> >>>> >>>> >>>> Check your start battery with a volt meter and both engine and battery >>>> switch turned off. If you get 12.6 volts or more, everything is probably >>>> OK. >>>> >>>> >>>> >>>> If the start battery won’t start the motor, you probably need a new >>>> battery. >>>> >>>> >>>> >>>> Rick Brass >>>> >>>> Washington, NC >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> *From:* CnC-List [mailto:cnc-list-boun...@cnc-list.com] *On Behalf Of >>>> *Danny >>>> Haughey via CnC-List >>>> *Sent:* Saturday, July 14, 2018 7:31 PM >>>> *To:* cnc-list@cnc-list.com >>>> *Cc:* Danny Haughey <djhaug...@juno.com> >>>> *Subject:* Stus-List Charging issues >>>> >>>> >>>> >>>> So my gauge shows 14amps while motoring but after a long motoring trip >>>> my starting battery and house batteries are not charging. The house >>>> batteries charge under shore power. >>>> >>>> >>>> >>>> I'm taking the starting battery home to throw on a charger to see if it >>>> will take a charge. If oin l I'm seeing the 14 amps can I assume the >>>> alternator is working? >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> Thanks, >>>> >>>> Danny >>>> _______________________________________________ >>>> >>>> Thanks everyone for supporting this list with your contributions. Each >>>> and every one is greatly appreciated. If you want to support the list - >>>> use PayPal to send contribution -- https://www.paypal.me/stumurray >>>> >>>> _______________________________________________ >>> >>> Thanks everyone for supporting this list with your contributions. Each >>> and every one is greatly appreciated. If you want to support the list - >>> use PayPal to send contribution -- https://www.paypal.me/stumurray >>> >>> >> >> _______________________________________________ >> >> Thanks everyone for supporting this list with your contributions. Each and >> every one is greatly appreciated. If you want to support the list - use >> PayPal to send contribution -- https://www.paypal.me/stumurray >> >> >> _______________________________________________ >> >> Thanks everyone for supporting this list with your contributions. Each >> and every one is greatly appreciated. If you want to support the list - >> use PayPal to send contribution -- https://www.paypal.me/stumurray >> >> > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > > -- Joel 301 541 8551
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
