Solar charge during use

[jnrhome]

Is it possible to connect a solar panel to a 48V PANASONIC 13.5AH SHARK PACK so I can charge during use?

[AZguy]

I think it's wishful to think it will charge during use - i.e. it will just discharge slower unless you are pulling a trailer load of solar...

[Scott S]

You invent a solar panel that small with that kind of output and you will be an extremely rich man. Lol

[jnrhome]

Assume that i do have a trailerload of panels.

https://www.youtube.com/watch?v=5_SGoka_LzI

Would it take any special configuration to charge during use?

[Scott S]

Just what motor do you have?. You do realize the motor on that bike in video was a 250 watt motor. I didn't watch long enough to find out what volts it is using but I would go out on a limb and say not more than 36 and possibly even less (24?). Start searching panels for the output you are going to need. It is going to be larger than that panel in the video guaranteed!
As for configuration you simply cannot be pulling more amps from the battery than the solor can provide to the battery. If I was on a long cross country trip with a trailer I would carry a small generator and a charger and charge an extra battery on the go or at breaks that way. Lol

[jnrhome]

My application is Wireless Internet Distribution with a 48v/38w max draw transceiver. The video suggests that charging during operation is possible. I'm trying to confirm that and whether it would need any special wiring to accomplish. The nicely made battery pack creates a plug and play battery module that is ideal for my remote communication application and should supply days of runtime even without sun.

[Scott S]

38 watts. Heck a spare battery is all you need for days of operation. Why cart around a big arse solar panel. You will never have access to an ac outlet to charge a battery?
A small generator and your charger is all you need. If you are using the WID while riding you would still need to keep motor amp draw and your tranciever draw combined below the solar panels output to charge on the go!

[jnrhome]

The WID system will be mounted in a cargo roof rack on top of a vehicle and used in a mobile application designed for deployment in disaster zones where electric supply is not likely.

[Scott S]

Disasters like after a hurricane when there is no sun for days? What about when rainy season is upon you then what? Again IMO a small inverter generator, your charger and another battery pack are the way to go.
I am done here.

[nfmisso]

Is it possible to connect a solar panel to a 48V PANASONIC 13.5AH SHARK PACK so I can charge during use?

The answer is YES.

You will need a solar panel array capable of providing the wattage you need (your load, plus an extra 75-100 watts for battery charging) and most likely a boost converter to get the voltage to the same as what the AC charger that came with your battery provides to the battery. You'll also want to use the same connector as the charger that came with your battery uses.

[paxtana]

There are charge controllers specifically for lithium.
You do not need a buck converter in the circuit the controller can handle variable input. You do not need to use an actual charger the controller takes care of that as well. It uses industry standard CC/CV

[JonWalter]

Forget solar, it's not worth the hassle. The one exception would be to use solar to charge your iPhone/iPad and other electronic devices -- it's relatively easy to find small solar chargers that have USB lea
my website

[CPG]

I recharge my bikes using solar 100% of the time, but it's solar that is grid tied at my home, so I just plug into the closet wall outlet. One time, just so I could say it was DIRECTLY alternative energy powered, I charged down at my hydro electric power shack before it entered the grid. So the force of the falling water (90 GPM, 147' of fall) was the direct source of the energy requried for that days ride, but that was just a one time stunt. Get a grid tie home solar system and you can then more or less claim you have a solar powered e bike. My bike is powered by a combination of wind, solar, and hydro, all stored in the grid, and I always produce an excess amount of power on a monthly basis, so I feel pretty guilt free about my power source, mostly it's fun to brag about when some e ignorant person claims an electric vehicle of any sort is only shifting the load to a big power plant, not in my case, it's free power, and more is coming tomorrow, time to go for a ride and use some up!

[crowm]

That is self sufficiency and America independence And effective use resources you are a mentor