They have a waterproof version but it only delivers. If this works, won't be available in wet weather as the Battery Tender has grills to release heat. We do not have solar and yes it is in our future. Am also attempting to reach Deltran support. ![]() ![]() If others utilize 2 charging feeds to the trailer batteries, especially when one is a "smart" charger, sounds like will give it a try. I imagine a simple AC extension cord plugged into the bed outlet to get the Battery Tender to the trailer batteries at the front of the trailer, which we will only operate when we are towing. They work well and have powered a heating pad for cold folks in the rear seat. One is in the back seat and one at the very back of the bed, drivers side. The truck inverter coverts DC to AC with 2 normal looking AC female receptacles. Thank you Sorry I didn't make it more obvious. ALL without any need for you to do anything more than service the batteries like you are doing now. no, it doesnt work at night, but its a dependably working unit ALL day, EVERY day, no matter the status of whether you are connected to a tow vehicle, power post, or nothing at all. Solar is the ultimate in battery charging. which means if the battery is at 85%, you may only be getting less than an amp from the tender into the battery, which will take a very long time to top a battery up.Ī properly sized, dedicated 12v circuit from the tow vehicle would do better than that. which running the generator makes the most sense, in which case you dont need a battery tender, as your onboard charger will do all the work.Īs ive said, running a battery tender from the small inverter on the tow vehicle STILL requires a wire to be run to the trailer from the tow vehicle, which running a permanently installed 12v circuit of 8-10awg size would make the most sense.Īnother thing to consider is, the "2 amp" battery tender is rated at its highest output, which will be what it puts out if the battery is low, but like any other stage charger, as the voltage in the battery gets higher, the input from the charger drops off. One still needs power to run the battery tender, so, you are going to have to run the generator to power it, or run it from a cord coming from the inverter from your tow vehicle. the output isnt high enough to make it worth the trouble.
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