As you begin to look for battery tenders you’ll find that there are many to choose from, but not to worry, we’ve done the research for you. With a solar-powered battery tender, you can maintain your charged batteries in an eco-friendly way that will also save you money in energy costs. Thankfully, there is a simple solution to your battery draining problems and that is a solar battery tender.Ī battery tender, or maintainer, is designed to maintain your vehicle’s battery at the optimum charge so that your car is ready to go whenever you are. If you have a car or motorcycle that you only use seasonally, then you have probably experienced that horrible feeling of turning the key and getting nothing but a hollow click. Those panels have built in battery tenders and connect both in parallel to the battery.Batteries lose their charge over time, especially vehicle batteries. Got a Battery Tender off the biggest (near 20v) panel between it and the battery but have the 13-14v panel connected directly to the battery. Same deal with the gate battery: 2 solar panels and end up swapping batteries a couple times/yr. Even on the low draw fence charger, I've 2 solar panels and end up recharging the battery about twice/yr. Got solar ones on the driveway gate battery and on the fence charger. Theirs is a genuine Battery Tender brand. I now use only 120v battery tender for the generator battery, a Chinese one and also lately for the Tacoma and Miata batteries, swapping it back and forth. works the little motor that auto switches the power. However, its battery runs the tiny LCD panel on the generator PLUS the panel inside the house, e.g. You can unplug and leave one on the tractor.Ī solar one would probably work on your tractor, but I tried a 10 amp or so one on my diesel generator, and it was not adequate. The battery tenders I have and have had generally come with a removable end cable that is either one to place over screws or with clamps that attach to battery posts (often both are provide). I have a couple of LED lights connected to the load side and a Wyze Cam plugged into one of the USB ports. Right now I have that on a group 27 battery that isn't really doing much. I have had mixed results with those but they seem to hold up if kept out of the weather. I also have one of those cheap controllers off eBay connected to a 100W panel. I turn the panel switch off before I disconnect the controller and turn it back on after it's connected to the other battery. I swap my 30W panel back and forth between a car and tractor from time to time so I ran the panel positive wire through a toggle switch. Most of these controllers require connection to a charged battery BEFORE you connect them to a solar panel. I have pigtails on all my equipment with the positive connection on the equipment side being the insulated side on the connector. Make sure you check polarity with an ohm meter before connecting anything. I use the polarity connectors out of the Harbor Freight solar power connector kit. I have it connected to a 30W panel on the roof of my barn. I recently bought the Battery Tender brand 5-45 solar controller.
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