Author Topic: Solar battery tender/ trickle charger?  (Read 255 times)

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Offline jackcarls0n

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Solar battery tender/ trickle charger?
« on: June 27, 2019, 03:29:42 am »
Thanks to Cuda and Boomer, learnt something new- Solar Trickle Chargers.

Anyone use them on their Concourse?

https://www.amazon.com/dp/B07DFD3RMS/ref=cm_sw_r_cp_apa_i_C0dfDbEAYCDAX

The link above is an example. They come with a cigarette adapter too. Quick question for those who do use it, can you plug the solar pack to the power outlet on the Concourse to charge it?

Offline Harry Martin

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Re: Solar battery tender/ trickle charger?
« Reply #1 on: June 27, 2019, 03:41:49 am »
110 mA...it might keep a new battery topped off in direct sunlight, but you would have to keep turning the cell so that it stares at the sun all day to maintain a good charge. I wouldn't but it.

Then, the 12V socket would have to be direcly tied to the battery.

Any farkles like a clock, alarm, GPS that are active while parked will suck up that charge.

Nope, I would not buy it. Might be okay for your cell phone.
Harry in Wild and Windy Casper, WY - 2015 "Greendammit"
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Offline jackcarls0n

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Re: Solar battery tender/ trickle charger?
« Reply #2 on: June 27, 2019, 04:03:12 am »
Thanks for the feedback.

Offline jackcarls0n

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Re: Solar battery tender/ trickle charger?
« Reply #3 on: June 27, 2019, 04:04:04 am »
Practically has to meet the requirements of a typical battery tender's output.

Offline Harry Martin

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Re: Solar battery tender/ trickle charger?
« Reply #4 on: June 27, 2019, 04:49:47 am »
The solar battery, will only be able to maintin the specified charge if pointed directly at the sun. As soon as the angle changes, the power drops off drastically.
Put a volt and amp meter on it while connected to a load and you will see what I'm talking about.

Using higher wattage cells will ensure that the battery gets enough charge from sunrise to sunset without the cell tracking the sun.
I have 250W solar panels charging 2 marine batteries that power my off-grid garage. Charge controllers keep the batteries topped off all day long without damage to my batteries. The charge controllers also keep my C14 topped off at the right amount by pulsing my battery. It gets technical quick, but a 10W to 25W solar cell will not harm your battery as the angle of the sun will not be directly producing peak power throughout the day. As long as there is a diode to prevent reverse discharge, it will be fine.
Harry in Wild and Windy Casper, WY - 2015 "Greendammit"
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Offline jackcarls0n

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Re: Solar battery tender/ trickle charger?
« Reply #5 on: June 27, 2019, 02:43:48 pm »
Seems like it's just better to get a tender and remove the battery and keep it charged up. Plus the bike is like in an open air shade. The solar panel won't get much direct sunlight even though it is very bright. I would do it if I could plug it into the 12 volt outlet.
Thanks Harry.

Offline Harry Martin

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Re: Solar battery tender/ trickle charger?
« Reply #6 on: June 27, 2019, 03:15:00 pm »
 :great: :beerchug:

Good choice!
Harry in Wild and Windy Casper, WY - 2015 "Greendammit"
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Offline jackcarls0n

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