Stu and Jon [and John, who has come to the party since I first posted the following], thank you for your detailed postings on this topic. I hope many other readers are making decisions about battery chargers and can benefit also from your messages. In hopes of buying some time to make a decision on a new charger and battery monitoring system, we plan to test (as suggested in a recent posting on the carbon monoxide thread) to see whether the old Flyback 20-3 can safely be used pro tem. Work has started on an energy budget, following your precedent, Stu. Nigel Calder's book, the WM catalogue, and your other suggestions for reading are next. So any decision on the new equipment is a ways off. Jon, thanks for the information about the new TrueCharger2s. I hadn't heard of them.