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General Scanning Discussion - For general questions not specific to a model of scanner or general discussion of use of a scanner. Manufacturer specific posts should be directed to the appropriate forums below and location specific posts should go in the appropriate regional forum..

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Old 07-03-2018, 2:35 AM
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Default Solar-powered rechargers

There are times when, due to storms or other disruptions, that the power can be out for a considerable amount of time. I was visiting Washington DC in late July 2012 when a powerful derecho storm knocked out the power for four days. In anticipation of future events, recently I bought a 300000mAh dual USB portable solar battery charger on eBay for $14.00.

Would this be adequate to keep a low wattage scanner model such as the Uniden BCD325P2 charged up?
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Old 07-03-2018, 3:54 AM
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After reading the online specs 2 watt solar panel @ 5 volts the charging current is .4 amps (400 Mil) and it has a rechargeable battery and if the battery size is correct it would last about 20 times what your batteries in the scanner would last before running out of charge and would take weeks to recharge on solar power only.
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Old 07-03-2018, 6:49 AM
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Obviously I need a higher wattage solar charging panel. Suggestions?
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Old 07-03-2018, 6:51 AM
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I bought this foldable solar panel:
https://www.amazon.com/gp/product/B00RFCVR62/

It has a MPPT controller and will charge a USB power bank a lot faster than a 2-watt panel
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Old 07-03-2018, 6:53 AM
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https://www.amazon.com/gp/product/B079LWP9MP/
I've tested this battery bank and it's storage rating is pretty accurate.
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Old 07-03-2018, 8:15 AM
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Thank you for the suggestions, Jon. They look like something to consider.
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Last edited by wbswetnam; 07-03-2018 at 8:22 AM..
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Old 07-03-2018, 11:16 AM
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Quote:
Originally Posted by wbswetnam View Post
I bought a 300000mAh dual USB portable solar battery charger on eBay for $14.00.
300 amp hours is a straight out lie. 300 Ah times 3.7 volts is 1110 watt hours. That's a battery that occupies about 300 cubic inches and weighs over 15 pounds, so get your ruler and bathroom scale out.

Here's a real 1200 Wh lithium ion battery: New Product: E-Scooter Portable Battery Pack - JTT Electronics Ltd.


If what you bought looks anything like these units Clive has reviewed, it's going to be garbage.

https://www.youtube.com/results?sear...lar+power+bank
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Old 07-03-2018, 11:41 AM
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Originally Posted by slicerwizard View Post

If what you bought looks anything like these units Clive has reviewed, it's going to be garbage.

https://www.youtube.com/results?sear...lar+power+bank
I bought it from a seller on eBay, so it's got to be another A-number-1 top-shelf super-duper high quality product from China!

OK so I lost $14...
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Old 07-03-2018, 12:34 PM
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Quote:
Originally Posted by slicerwizard View Post
300 amp hours is a straight out lie. 300 Ah times 3.7 volts is 1110 watt hours. That's a battery that occupies about 300 cubic inches and weighs over 15 pounds, so get your ruler and bathroom scale out.

Here's a real 1200 Wh lithium ion battery: New Product: E-Scooter Portable Battery Pack - JTT Electronics Ltd.


If what you bought looks anything like these units Clive has reviewed, it's going to be garbage.

https://www.youtube.com/results?sear...lar+power+bank
It may be an additional zero, intentional or otherwise.
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Old 07-03-2018, 3:17 PM
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My $14 'solar' USB charger arrived this afternoon... complete piece of junk. Very cheaply made, only vaguely resembles the product in the advertising photo.
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Old 07-03-2018, 3:31 PM
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Quote:
Originally Posted by wbswetnam View Post
My $14 'solar' USB charger arrived this afternoon... complete piece of junk. Very cheaply made, only vaguely resembles the product in the advertising photo.
If there's a way to get a refund I'd go for it...14 bucks is 14 bucks. I haven't eBay'd anything in several years so I don't know.

But sometimes you just have to try something to see if it's any good. Sometimes you get nicked, and sometimes you wind up with a good value. I've had both happen many times and no doubt will have both happen many more times in the future.
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Old 07-03-2018, 3:42 PM
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I'm not gay, but...

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Originally Posted by DJ11DLN View Post
...14 bucks is 14 bucks.
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Old 07-12-2018, 2:49 AM
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Quote:
Originally Posted by wbswetnam View Post
I bought it from a seller on eBay, so it's got to be another A-number-1 top-shelf super-duper high quality product from China!

OK so I lost $14...
Are you able to share the link to where to get this?
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Old 07-12-2018, 4:39 AM
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Quote:
Originally Posted by Dark_Hunter View Post
Are you able to share the link to where to get this?
Did you see his next comment? (Quoted below)

Quote:
Originally Posted by wbswetnam View Post
My $14 'solar' USB charger arrived this afternoon... complete piece of junk. Very cheaply made, only vaguely resembles the product in the advertising photo.

Sent using Tapatalk
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Old 07-12-2018, 4:50 AM
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Quote:
Originally Posted by krokus View Post
Did you see his next comment? (Quoted below)




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Must have missed it sorry.

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