Battery Tender 021-1163 5W Solar Maintainer
From Battery Tender
| List Price: | $79.95 |
| Price: | $60.51 & eligible for FREE Super Saver Shipping on orders over $25. |
Product Description
Harness the power of the sun with this Battery Tender 5-Watt Solar Panel with built-in smart charging controller. It's 100% portable and ideal for battery charging and maintenance, and for storage space without power access. Battery Tender solar panels are the only panels available with a built-in charge controller to prevent overcharging.
Product Details
- Amazon Sales Rank: #4647 in Automotive
- Size: 5WATT
- Color: Black
- Brand: Battery Tender
- Model: 021-1163
- Dimensions: 3.00" h x17.80" w x17.80" l,3.00 pounds
Features
- Built-in 3-step microcontroller for precise charging
- Waterproof and sparkproof for outdoor installations
- Easy, do-it-yourself installation
- Built-in temperature compensation sensor
- 12V nominal voltage 270 mAmps
Most helpful customer reviews
20 of 20 people found the following review helpful.Charges battery to full, then trickle charges to maintain. My 2005 GTO sits for weeks without being used. I hooked it up and it told me my battery voltage was to low. My battery was junk and needed to be replaced. This will happen to you if you don't start it weekly and let it run for a while,or hook it up to a trickle charger. I installed a new battery and charger keeps it at full charge. This is a very nice product. I don't have to worry about using an extention cord.
18 of 19 people found the following review helpful.I bought this to use as a battery tender for our boat which doesn't get enough use. I built a mount out of ABS pipe so I could mount it above the boat lift. It works very well, it charges even when the sun is hidden behind clouds and I have not had any dead battery probems since. Having a visible indicator that it is working is a nice feature. It is a good quality product that doesn't seem to be bothered by the weather.My only complaint is that they (the mfg) doesn't tell you which model to use for a given purpose. That would be helpful.
11 of 11 people found the following review helpful.This unit was utilized outdoors to keep my collector car's battery charged. The car is temporarily stored outside under a heavy-duty car cover. I installed the Battery Tender 021-1163 5-Watt solar unit and placed it *outside* the vehicle on the car's windshield, then connected it to the battery.I will say this: While it worked, it *did* keep the battery fully charged.I had the unit for less than three months when I noticed the LED indicator had stopped working. When I inspected the unit, the small black plastic soldered connector (on the center of the back of the panel) had separated and fallen off. It was only held in place by some cheap glue and epoxy filler. When it fell off, that caused one of the delicate foil wires coming directly out of the solar panel to separate and break. The unit was no longer operational.It's a cheap, poor design (manufactured in China). I paid $65 for this SINGLE unit, and it's NOT weatherproof at all. I inspected the instructions that came with it, and NOWHERE does it say that it's not weatherproof. One would assume the unit was weatherproof since it's designed for SOLAR power, but... you'd be wrong. It's not weatherproof. Apparently, it's made to be placed INSIDE the vehicle, on the car's dash... but for those of us who cover our cars outdoors, that doesn't work.I disassembled and repaired the unit myself. It *DOES* work again, and now it's mounted inside my work truck out of the weather.This is the second Battery Tender product that has failed on me. I have a Tender Jr. that stopped working for no apparent reason (and I couldn't fix that one, despite the fact that it never left my garage).I will no longer be using or recommending their products.I have since replaced this ONE unit with TWO Sunforce 5-watt panels (for the same $65 price). They are FULLY WEATHERPROOF and thus far, have not failed. I own a Sunforce 1-watt weatherproof unit that's been outdoors, hooked to my ATV battery. It has kept the battery charged and performs flawlessly since the day I received it, about a year ago. I suggest you try Sunforce brand chargers.I'm giving it two stars only because it does still function and I was able to salvage it. But... no one should have to do that for a new product you've paid for. Epic battery charging failure here. Avoid this unit unless you want to mount it directly inside your vehicle, and I don't know anyone who's got the space in their car to mount something this size. My truck is a crew cab, so I have interior space for it. Most other's won't.
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