Info on battery purchase
See comment #22, about batt 3.
Checked level Nov 12 13:00 2017: Filled to 1/4 inch below vent.<
Find sunny day to Equalise :: See comment #21
15. Can tap water to used to refill batteries?
Use only distilled, deionized or demineralized water . . . tap or reverse osmosis water from residential systems can produce calcium or magnesium sulfate crystals that can fill the pores and coat the plates. . . . If the plates are not covered and distilled water is not available, use rain or tap water to prevent sulfation and internal battery explosions.
25th August 2107Bought water: See comment 19
23-25 March 2017: Problem with Battery 4:See comment 17
21-25 March 2017: Rearranged batteries to use all four: See comment 16
19th January 2017: Previous swap of 3&4 for 1&2
See comments 8 to 14 :- delayed swap and Bat 2 at 8.3v after 8 months
See comments 13 :- delayed swap and Bat 3 at 11.9v after 3.25 months