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| Tough to guess, but I have a friend using a panel to maintain a deep cycle battery on a chemical trailer- but there is no way to compare your use to his. I bought panels from amazon to use as tenders on equipment parked remotely. You could just buy one panel and see if the recharge rate is sufficient. For diesel, I suspect that it is because you do not use it all day. And if it is not, just add another panel. -Mike
PS: Mine looks like the battery tender product but without the tender processor- I suppose it is a good idea, but if the max the panel puts out is 14v, I did not see the risk of over charging. I may be wrong. The panel through Amazon was half that price, as I remember. I suspect that the Battery Tender product is better than the panel I bought.
Edited by mschultz 11/23/2012 16:26
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