In theory, yes. If the battery switch is set to "1+2", the batteries will be hard wired in parallel at that point, and a single voltage source (the trickle charger) should charge them.
Caveats:
1) A single trickle charger would, at best, take a VERY LONG time to charge two batteries. You would be better off to buy a second trickle charger and put one on each bank. Then you'll also have redundancy in case one dies.
2) You should be sure you have a fuse on EACH battery bank. This will protect you in the event (when) one of the batteries loses a cell and catastrophically fails. If the banks are tied in parallel, the bad battery will pull down the good battery. According to insurance records, boats have been sunk from a good battery discharging into a bad battery at a high enough rate to burn the cables and start a fire. A fuse would blow if something like that happened, and would protect you.
From: dsailormon <dsailormon@yahoo.com>
To: electricboats@yahoogroups.com
Sent: Monday, August 19, 2013 7:57 AM
Subject: [Electric Boats] perkos switch and battery charger
i am not an electrical person. i did install a thoosa on my 30 ft alberg. but i have another boat with a two battery setup and a perko switch. the question for all u electrical folk----if i have a trickle charger on one battery and the perko switch on both will both batteries be charged. probably a simple question for ya'll but would appreciate knowing. thanks in advance
dan
dan
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