http://www.lifelinebatteries.com/rvdeepcyclebatteries.php Lifeline is perhaps the first step down from what most consider the best available - the Rolls Surrette batteries - followed by Trojan. Reserve capacity and cranking amps are mostly immaterial in choosing a true deep cycle battery. The GPL-27T I am using is 100 a/h and will fit, length and width wise, in the stock, unmodified box. Deepening or lengthening the box to retain a stock appearance is important to me. The 'NC-27' battery you refer to is an inexpensive Exide product and 'dual-purpose', i.e. not a true HD deep cycle. Regarding charging: the link provided above seems to relate to small-amperage chargers designed primarily to charge small batteries. Xantrex makes several charge regulators for alternators: http://xantrex.com/power-products/power-accessories/alternator-regulator.aspx I plan to add one of these to my rig, since I'll be using two identical GPL-27 batteries for storage (200a/h). Connecting this is a little more difficult with a Bosch alternator but can be done. Also, there will be an on-board charger (most likely an Iota) for the times when I have access to 110V power and want to top off the batteries. Karl |
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