+1 on what Rob said. If you charge the batteries now _and_ disconnect them form _everything_, they should last to spring without any problem. If they are healthy, they would keep the charge; if they are not, you have a different issue to deal with.
I used to take the batteries home and re-charge them every 4-6 weeks, but it is not necessary. Marek 1994 C270 Legato Ottawa, ON From: robert via CnC-List Sent: Friday, November 30, 2018 10:42 To: cnc-list@cnc-list.com Cc: robert Subject: Stus-List Winter Battery Maintenance Ray: I have 2 Group 27's deep cycle....now 9 years old, and I leave them on the boat over the winter with everything disconnected. They get a full charge in the Fall during layup bringing up to 6.2V to 6.4V.....also check the levels of the electrolyte (acid) and add distilled water if necessary before charging. For a few winters, I have left them this way without a charge until Spring....in the Spring, they read 12.4V to 12.5V. Most winters, I will visit the boat and give the batteries a charge with a 6V charger.....maybe an hour on each battery. Never an issue. There is a permanent 'smart charger' on the boat but our club will not permit an electrical connection to the boat if it is unattended, good policy for obvious reasons, but being on a trickle charge all winter has not been necessary . Rob Abbott AZURA C&C 32 - #277 Halifax, N.S On 2018-11-30 11:15 a.m., Raymond Macklin via CnC-List wrote: I have two batteries that I am looking for information on how to Maintain my batteries over the winter. What charger to purchase and process to follow. Any information would be greatly appreciated. Thanks, . Ray LakeHouse Milwaukee, WI _______________________________________________ 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<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.paypal.me%2Fstumurray&data=02%7C01%7C%7C3140b65580124d9e99ac08d656da7656%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636791893615645885&sdata=%2BsOqx%2FswdQNV0daSNB9OzeSs6NNSpyUpMc4Fd%2FPQWX4%3D&reserved=0>
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