Bill, I have lined our plywood battery boxes for many years with 6 mil polyethylene sheeting. I do two layers, neatly fold the corners so it form fits then run it up the side walls about 10 inches only and staple the poly to the plywood. To protect the poly liner from the weight of the batteries I use 1" x 3" softwood strapping that I sand down so no rough edges will damage the poly. I first spread out a small amount of baking soda on the bottom of the battery box (on the plywood) before installing the poly liner, then on the poly before placing the batteries on top of the strapping. Two runs of strapping for one row of batteries and four rows of strapping for two rows of batteries. This is simple and cost effective method that has had excellent results over the years. Recently removed the second battery bank from a twenty year old battery box set up in this method. We removed the poly liner for the first time and we found the 3/4" plywood to be in good enough shape to use for the third set of batteries. - Dave
David Palumbo Independent Power LLC 462 Solar Way Drive Hyde Park, VT 05655 802-888-7194 -----Original Message----- From: RE-wrenches [mailto:[email protected]] On Behalf Of frenergy Sent: Monday, March 30, 2015 12:04 PM To: RE-wrenches Subject: [RE-wrenches] Acid containment Fellow Wrenches, I just called Tap Plastics hoping they would solve my problem of battery acid containment within a plywood battery box. I was surprised by their response that the acrylic was not impervious to acid and polyethylene would not work because sealants nor caulking adhere to it properly. They did not have anything that would work. I've used those individual battery boxes from an auto parts store (~$12/each) but they take up more space than just the batteries. Has anyone ever used ice dam underpayment, like Grace? Better idea? Thanks for any advice, Bill Feather River Solar Electric _______________________________________________ List sponsored by Redwood Alliance List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org _______________________________________________ List sponsored by Redwood Alliance List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
