This is a standard group 27 deep discharge (Trolling  motor) marine 
battery. Many people have had good luck with the Walmart  brand of battery. A 
standard 12 volt automotive starting battery is not a good  choice because they 
don't like to be drawn down very far before  recharging.
 
Rummy
 
 
In a message dated 7/18/2013 11:31:50 A.M. Eastern Daylight Time,  
jonking1 at verizon.net writes:

Sea  Otter has original Energizer E27DC batteries. One ended up discharged 
over the  winter. 
1. Can the solar panels recharge it?
2. What do Rhodies  recommend for replacement? Reviews on Energizer site 
remarkably  poor.
Jon King
Sea Otter,
North Bay, Osterville,  MA

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