Best solar battery chargers & charging kits according to redditors

There aren't any battery chemistries that run at 5V +/- 10%.

It sounds like you should get a 12V deep cycle lead-acid battery. They are very common, cheap, can take heat, have solar chargers available, and come in the capacity you need.

All you need is a 12V > 5V regulator, which is also very common, cheap, and available.

edit: This one has a 5V regulator built in, so you could run it straight off the USB ports if your load is < 3A

This panel is far superior to the Omnicharge panel

ALLPOWERS 100W Solar Charger... https://www.amazon.com/dp/B075YRKVMH?ref=ppx_pop_mob_ap_share

I have been using it for quite a while and it is able to charge the Omni Ultimate at Max rate.

That fan is pretty big. Might be better off to send something like this: https://www.newegg.com/Product/Product.aspx?Item=9SIA4M540J4841&ignorebbr=1&nm_mc=KNC-GoogleMKP-PC&cm_mmc=KNC-GoogleMKP-PC-_-pla-_-Fans-_-9SIA4M540J4841&gclid=CjwKCAjw3rfOBRBJEiwAam-GsDsOnkscCXpE8V_GHuxwtDWYpkbYqvLXfxgWZ7BQAPY7KwVNn0S5jRoCge8QAvD_BwE&gclsrc=aw.ds

Edit: the box fan you mentioned uses 120w and needs an inverter to operate vs the camping fan above is 12w and works on 12V DC. simpler and easier to get going with less load, though likely less air movement.

or some other 12V camping fan.

as for the solar, look for something like this: https://www.amazon.com/Portable-Foldable-SunPower-Smartphones-Batteries/dp/B07432VBX8/ref=sr_1_4?s=electronics&ie=UTF8&qid=1506716539&sr=1-4&keywords=60w+camping+solar

it has clamps to charge a battery will fold up for your shipping and is easy to set up.

Horn + Battery + Switch = Horn on Bike

Hell, you could fit all that into cargo pants and be a pedestrian honking at cars.

Or on kickstarter.

But why?

You could this so much better with a standard usb battery.

TalentCell Rechargeable 12V 3000mAh Lithium ion Battery Pack for LED Strip, CCTV Camera and More, DC 12V/5V USB Dual Output External Battery Power Bank with Charger, Black https://www.amazon.com/dp/B01M7Z9Z1N/ref=cm_sw_r_cp_api_i_6W6SDbXQGKG8Z

$25 for something simple.

Or if you need a LOT of power,

TalentCell Rechargeable 72W 132WH 12V/11000mAh 9V/14500mAh 5V/26400mAh DC Output Lithium Ion Battery Pack For LED Strip and CCTV Camera, Portable Li-ion Power Bank, Black https://www.amazon.com/dp/B016BJCRUO/ref=cm_sw_r_cp_api_i_RY6SDb975MER2

$65.

https://www.amazon.com/TalentCell-Rechargeable-12000mAh-Multi-led-indicator/dp/B00ME3ZH7C

edit : or this https://www.amazon.com/dp/B07H8F5HYJ/ref=emc_b_5_t

this one is quite cool:
12v + 9v + USB outputs... https://www.amazon.com/dp/B01337QXMA/ref=emc_b_5_t?th=1

Try this one: https://www.amazon.com/TalentCell-Rechargeable-11000mAh-14500mAh-26400mAh/dp/B016BJCRUO

I've taken this beast with me on multiple backpacking adventures. Powers my phone 24/7 for a week easily. Even offers 12v outputs up to 3A for special electronics that might need it.

No need to mess with solar chargers. In my experience, they are all useless. Too slow, too expensive, and too cumbersome. I eventually ditched these solar panel systems in favor of this option. When you are backpacking, you really don't want to dink around with solar; just plug and go devices.

Not directly that I know of, but you just plug the solar panel into something like an XTAR VC2 and away you go!

I use this panel because I got it on sale for prime day.

Car battery charger.

https://www.amazon.com/SUNAPEX-maintainer-Portable-Motorcycle-Snowmobile/dp/B07QB3N2PW

Solar trickle chargers are available to solve your mom’s problem. Suction cup it into the windshield and plug it into the cigarette lighter.

It sounds like managing to keep eight good AA batteries in the thing is the issue. If I might make a suggestion, get yourself one of these rechargeable batteries and use that instead. It has 11Ah of capacity and one of these will run my Celestron CPC 9.25 EdgeHD for almost an entire day. It will come with a cable that should fit your scope; it uses a standard 2.1mm plug. It also comes with the charger to top it off during the day when you're not using it.

I have this attached to the fork arm of my scope and the battery moves with the scope and the wire doesn't wrap around and get pinched this way. It's a very clean approach and will save you having to always worry about AA batteries or extension cords.

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I purchased some lithium packs that offer 12v 9v and 5v. I use this for my BMPCC OG and Fuji X-T2 external. 5V to 12V takes almost 3x the current at 5V to get the same at 12V due to losses.

I will have this setup at my camp site:

400Wh battery with AC inverter

100W solar panel

That said (and I agree), here's a hypothetical for the EE crowd to ponder...

They all use AC Adapters. For example, the Kickr Snap uses a 12v 5A adapter, so couldn't you run it off of a $15 battery, like this? Yes, you would have to fit your own custom wire, and yes, you would have to recharge that periodically at the house (or maybe via solar).

And yes, I realize that this risks blowing up a $500 trainer, hence the hypothetical classification.

fwiw this is what I grabbed. https://www.amazon.ca/gp/product/B01M5DCPKD/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1 It pushes a good 2A on the usb in overcast but not dark enough to rain weather in the first week of may. Overpriced but folds neatly in to a box. Yup, when it comes to solar, panel size matters. ie., you always want a bigger panel.

Late Edit: Just adding. An inexpensive/cheap charge controller so you don't over charge lead-acid. https://www.amazon.ca/gp/product/B07GRZ8VHL/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1

We probably have the solar battery tender. I got it after almost stranding myself when I left a very dim map light on for a few days. I also converted the interior bulbs to LED, which probably makes the solar tender unnecessary. I bet a lot of your interior bulbs are 194's, and 10 packs of those are inexpensive.

Not USB-c but this has been a very handy device for multiple recharges while traveling and powering a portable Lepai music setup. Affordable and 3p3s 18650 internally- https://www.amazon.com/TalentCell-Rechargeable-11000mAh-14500mAh-26400mAh/dp/B016BJCRUO

Yeah! Briefly though, I found it a bit too bulky to take on hikes/outside in general, so I pre-ordered a OP-Z for portable use and am keeping the Digitakt/tone pair in my home studio.

This is the bank I opted for since it seemed to be a reliable, cheaper option: https://www.amazon.com/gp/product/B016BJCRUO/ref=oh_aui_search_detailpage?ie=UTF8&th=1 Should last around ~20 hours

Here's a really good thread on Elektronauts if you want to compare some other options for power banks: https://www.elektronauts.com/t/digitakt-external-battery-power-pack-options/39561/175

Good luck!

If i have my math right.

12v DC

10w Draw

.833333 Amps

http://underdogvapes.com/faq#electricity

Something like this should work.

https://www.amazon.com/TalentCell-Rechargeable-11000mAh-14500mAh-26400mAh/dp/B016BJCRUO/ref=sr_1_2?ie=UTF8&qid=1494362105&sr=8-2&keywords=12v+power+pack

Edit: I think it will last you somewhere between 7-13Hours Max at full charge.

Do you have any recommendations? I recall seeing someone using something like this in a previous build. Would I have any issues powering both the amp and bluetooth receiver off one of those?

and even if, you can power a light house for hours from a power bank anyways. no need to charge it simultaneously. just get one with a 12-volt outlet https://www.amazon.com/TalentCell-Rechargeable-11000mAh-20000mAh-Portable/dp/B01337QXMA

https://www.reddit.com/r/Vive/comments/42271m/lighthouses_running_from_battery_for_hours_and/

For a fixed installation USB charging solution, I would recommend:

• A 12v solar panel
  
• A solar charge regulator with a load output
  
• A 12v SLA battery
  
• A 12v USB charger
  
  Wiring that up shouldn't be rocket science.
  
  There are, of course, many sizes and brands of each of those things, and I just did a cursory search for examples. You probably want to shop around. The regulator with the load output is important because it will discontinue USB charging before discharging the 12v battery too far.
  
  This will not save you money but will be handy in a prolonged power outage or whatever.

I bought a battery for mine. Haven't tested how long I can go with it, but worked great,

TalentCell Rechargeable 72W 100WH 12V/8300mAh 9V/11000mAh 5V/20000mAh DC, Portable Li-ion Power Bank, https://www.amazon.com/dp/B01337QXMA/ref=cm_sw_r_cp_apa_i_KTp2CbN4HBRDA

I've never used them, but Flycrates says they will ship to places that Amazon sellers won't. According to this page, the main problems are extra shipping costs, customs forms, and import duties that have to be paid. Flycrates will supposedly do that for you and let you know what import duties will need to be paid up front.

AllPowers makes a flexible 100w solar panel that sells on Amazon, and there are other companies that also sell flexible panels.

I purchased an AllPowers flexible+foldable 80w solar charger panel and a Suaoki 150Wh Solar Generator (lithium battery+inverter) for camping, and it's worked well. It will run a few lights and power a laptop. I did have to custom-make the connector cable between them to charge the Suaoki, however.

Hope that helps!

Something like this

https://www.amazon.ca/TalentCell-Rechargeable-11000mAh-14500mAh-26400mAh/dp/B016BJCRUO/ref=sr_1_3?gclid=Cj0KCQjwhJrqBRDZARIsALhp1WQQBhZXhL-K4nUA05cIK9N05dnKWfePi4dDN6JCUCthXrSpab7NOBQaAhKCEALw_wcB&hvadid=284210268362&hvdev=c&hvlocphy=9001484&hvnetw=g&hvpos=1t1&hvqmt=b&hvrand=13890626508992761386&hvtargid=kwd-377617364151&hydadcr=1498_9454457&keywords=talentcell&qid=1564964277&s=gateway&sr=8-3

​

Then just plug it into the dc port on the f8n?

Here you go

I'm not sure what you mean by solar generator. Can you post an example?

I have a basic 18 watt solar panel on my boat that keeps two marine 12v batteries topped off. Then I found a 4k watt inverter brand new on Facebook marketplace for $100. We had some power outages with the recent storms so I duplicated the same thing for my house which allows me to use my cell phone for data and the rest of the system to run my laptop so I can work from home "off the grid".

I'm a bit embarrassed to say I'm just using random old car batteries because in our state it costs like $20 to get rid of them properly. They seem to do the job though so I haven't had a reason to replace them.

Here is the panel I use:

SUAOKI 18V 12V 18W Solar Car Battery Charger Portable Solar Panel Trickle Charger with Cigarette Lighter Plug, Battery Charging Clip Line for Motorcycle RV Boat Marine Snowmobile https://www.amazon.com/dp/B0722XB3VQ/ref=cm_sw_r_cp_apa_i_4WpDDbC1H4FMS

Amazon has some. This one has 3 USB ports for charging . And, this one charges rechargable batteries

Thanks :)

You could write sequences easily enough, and in fact it would be relatively trivial to fire them off spontaneously with simple pushbuttons as input to your microcontroller. When I put that costume together, I wore a little custom switchboard like a watch that had the arduino installed on it along with a series of pushbuttons and rocker switches to turn things on and off.


Syncing to music directly might be tough - certainly doable, but it may just be easier to have buttons which perform preprogrammed actions. There are a lot of ways things could go awry when trying to line up audio with circuits. For professional shows it's better to have an engineer or two (on further viewing, it looks like they had 3 guys manning this in the show) on the sidelines controlling all that stuff, but if it's just you a simpler and more adaptable route might be to program 8 or so actions, wire buttons from the arduino to your fingertips to fire them off, and rely on your own timing and coordination to get things really moving. Just a suggestion to avoid overcomplicating things, and using such a technique also allows you to be a bit more adaptable (say, for example, if you want to use the surrounding music like at a club as opposed to needing your own).


Also /u/Tinkrr2 is right about the voltage requirements varying by brand - make sure you look into that. Finally, if you're looking to make this into a semi-permanent hobby then it helps to have an adjustable power supply handy. A beefy battery, a sizable power supply, a few barrel jacks, some Dupont connectors, and most importantly an adjustable buck converter will take you very far. I wouldn't worry too much about any of this now, but if you decide you like tinkering with electronics (especially LEDs, which have moderate power requirements) that would be a terrific start.

I used to have a solar panel trickler. I used it to help prevent the battery from dying too quickly. I pretty much left it on the dash when the truck was parked. had it for about 3 years before it stopped working. By then I just bought a really good battery and didn't worry about using another one.

It was something like this.

https://www.amazon.com/Sunway-Solar-Maintainer-Motorcycle-Powersports/dp/B01MYVUSRH/ref=sr_1_sc_1?ie=UTF8&qid=1525132763&sr=8-1-spell&keywords=solar+panel+trickler

[Or add a solar battery charger to the second battery that you can put in the rear window or dashboard.] (https://www.amazon.com/POWOXI-Portable-Waterproof-Maintainer-Amorphous/dp/B07F9RNM1D/ref=asc_df_B07F9RNM1D/?tag=hyprod-20&linkCode=df0&hvadid=241963226348&hvpos=1o2&hvnetw=g&hvrand=1081114909346668752&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9016674&hvtargid=pla-521340003342&psc=1)

No, those panels output around 10W whereas a computer typically needs ~50W to charge. Also most of them only output 5V USB.

But:

• There are bigger/more powerfull solar panels. For example this monster that claims to output up to 60W... Honestly it's probably only 30 to 40W. Maybe that's enough for your laptop. It also has a 18V output and a set of adapters so you can directly charge your laptop
  
• I have a solar panel very similar to the OP one. Claims to be 16W, measured a bit more than 10W the other day. It can charge this big USB battery and in turn that battery can charge my laptop because it has a 45W output and my laptop can charge with USB-PD (can't do both at the same time)

I'm using these batteries.

They've had no trouble running all the lights so far. I'm running just 192 addressable led pixels, they run at 5V. Even if they only work for 1 hour, that should be fine for most performances I have in mind.

Do you work with Lightjams? Do you think it's worth the investment for the license? I am about to get it, just wondering your experience.

Looks like that one is not 12 volts, but 5 volts only. This one might be better.

I believe the panel has a regulator built in... But I could be wrong. This is the panel I'm referring to:
ALLPOWERS 100W Solar Charger... https://www.amazon.com/dp/B075YRKVMH?ref=ppx_pop_mob_ap_share

I, too would be interested. I camp a lot and something like this would be perfect.

Additionally, would you be willing to consider adding a port to trickle charge the batteries off of a solar panel? Say, a folding model like this one?

I use one of these for my portable low power ham station.

​

https://www.amazon.com/gp/product/B01337QXMA/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

​

it is an always on type thing and matter of fact, the power switch is just a cut to the actual battery. If you plug in 12v to the barrel plug, the USB jack will charge things with the switch in either position. Leave it on and you have a USB UPS that kicks in automatically if it loses DC input.

Thanks! Is there anything I need to look at in particular before buying e.g. the wattage or volts? I live in an apartment so parking isn’t near an outlet but I found this on amazon which might work

Solar Car Battery Trickle Charger, 12V 3.3W Solar Battery Charger Car, Waterproof Portable Amorphous Solar Panel For Automotive, Motorcycle, Boat, Atv,Marine, RV, Trailer, Powersports, Snowmobile, etc https://www.amazon.co.uk/dp/B07F9RNM1D/ref=cm_sw_r_cp_api_i_LAduDbPF2FDFD

I've had good experiences with these off-the-shelf packs:

https://www.amazon.com/gp/product/B00935L44E/
https://www.amazon.com/gp/product/B00XMM4ZZE/

This one isn't regulated but works fairly well with some loss of sync range as the battery depletes:

https://www.amazon.com/gp/product/B016BJCRUO/

Many similar ones are suitable. Better to use regulated ones than simple "12V" battery packs, which are typically 12.3-12.6 V fully charged and drop off as the batteries discharge. The slightly higher voltage is fine, as is the drop towards 9 Volt, but their management ICs will normally cut off the load before the cells might be damaged by excessive discharge. The low voltage cut-out in the base will turn off the base station before it might get confused by too low a voltage if the battery pack is unprotected - such as with primary cell holders.

>Yea, someone else said that..didn't think about that b4 but that might be perfect actually..something like this I guess..
>
> https://www.amazon.com/dp/B07F9RNM1D

Also, is this a charge controller that would work?
https://www.amazon.co.uk/gp/aw/d/B007VLMRP2/ref=s9_simh_gw_d0_g86_i1?pf_rd_p=10a14eba-dc73-41cf-b99d-532736921025&pf_rd_s=grid-unrec-4&pf_rd_t=Gateway&pf_rd_i=mobile&pf_rd_m=A3P5ROKL5A1OLE&pf_rd_r=ENG32RPNV2BR0SG1K3MT

Or do I have to go for something like the skyrc imax b6?

This looks like a perfect affordable unit. Thanks for the tip. I think I'll go for the bigger version https://www.amazon.com/gp/aw/d/B016BJCRUO/ref=pd_aw_sim_469_1?ie=UTF8&psc=1&refRID=0K6QXK18B0T1D250MEN8&dpPl=1&dpID=71ZoNiypMcL

https://www.amazon.com/Sunway-Solar-Maintainer-Motorcycle-Snowmobile/dp/B01MYVUSRH/ref=sr_1_2?ie=UTF8&qid=1491851129&sr=8-2&keywords=car+solar+trickle+charger


claims to not overcharge

Well it wouldn't be easy to achieve, but I don't know of any product available that would have such functionality.

For starters I would check out some kind of 12V power bank.

This might be what your looking for: It is essentially a contained 3S - 3.7V - li-ion battery with a BMS. It also has a low power 2A USB output to power the 5V device. The 5V might be too weak for your application.

I will give you two scenarios, one 1s and the other 3S.

1S solution:

• Multiple cells in parallel
  
• Some undervoltage protection
  
• A 4.2V cccv charger (NO ADAPTER)
  
• A 5V boost converter
  
• a 12V boost converter
  
  3S solution (3.7V nominal li-ion):
  
  
• A 3S battery
  
• A fully functional BMS with balancing and undervoltage protection
  
• a 12.6V cccv charger (NO ADAPTER)
  
• A 5V buck converter
  
• A 12V buck/boost converter (might be optional)
  
  3S solution (3.35V nominal li-ion LFP):
  
  
• A 4S battery
  
• A fully functional BMS with balancing and undervoltage protection
  
• a 14.4V cccv charger (NO ADAPTER)
  
• A 5V buck converter
  
• A 12V buck/boost converter (might be optional)
  
  ​
  
  ​
  
  ​

As per rain, could always put it in a large Tupperware to keep rain off of it, if your cover does not have any clear windows. if you get a solar charger at 13 volts, it will be safe and wont overcharge the battery. Something to also consider, is you can find a charger, with a diod in it to prevent feedback from the battery. Most of them should have this feature, Here is another one. and this is in the description. Slightly more expensive but would work. Doing some searching sure you could find a better priced one.

If the battery capacity is 20Ah or greater, the charger will not overcharge the battery or cause any damage.

https://www.amazon.com/POWOXI-Waterproof-Amorphous-Motorcycle-Watercraft/dp/B07M8VSFKF/ref=mp_s_a_1_11?adgrpid=56735102100&gclid=Cj0KCQjwn8_mBRCLARIsAKxi0GIZx_q1jscZWwlR4VJvysJXuCIYytAltUbR8nGCnui4BjpTlYDARs4aAvqbEALw_wcB&hvadid=274874347412&hvdev=m&hvlocphy=9027146&hvnetw=g&hvpos=1t1&hvqmt=e&hvrand=1772191190546338003&hvtargid=kwd-363924561807&hydadcr=13056_10208716&keywords=solar+powered+car+battery+charger&qid=1557407586&s=gateway&sr=8-11

This should do the trick. This is the one I have.

When I say repeater, I don't mean something you install. I mean something portable you take with you when you go there, and take away when you leave.

For example, start with a little cooler like this one. Two small 12v batteries (like from a motorcycle) go in the base, wired in series. That gives you 24v power.

From that you can run a NanoStation M series device as the uplink back to your home, and a UAP-AC-Lite as the local access point. Wiring is super simple as the NanoStation M (as long as it's not a Loco) has two Ethernet ports, the second one will (if you tell it to) passthru the PoE. So you use a hacked up cable to feed the NanoStation, and a standard Ethernet cable from the NanoStation's secondary port straight to the UAP-AC-Lite. Use some Velcro ties to attach both units to the top of the cooler handle, put the batteries in the bottom, and you're good to go.

Actually, both the NanoStation M and the UAP-AC-Lite should (according to posts by UBNT employees on their own forum) run on 12v or thereabouts. So a single smaller 12v battery or a lithium pack like this one should power the NanoStation and the UAP-AC-Lite for at least a couple hours.

This from Amazon is a charge controller with two USB ports for $10.99. Doesn't have monitoring using the Pi, but a whole lot cheaper.

I've worked with enough electricity that I would really rather not make my own. That being said, plans exist, and I've seen a few folks at our observatory with some -very- nice ones. These also exist, which have been recommended to me before, keep meaning to order one actually...

they make one of these that plugs right into your battery you can buy at lowes for like 20 bucks. you can plug it into your cigarette lighter to jump the battery to start the car. but i think theres a limiter on it or it takes a certain amount of time to get it to start i forget. but to do it legit you have to buy converters ect. but some of those kits which would fit on a van or whatever could power a laptop or gps device straight from the sun and could bank 8 hour charge in a few.. not sure how those work i forget. https://www.amazon.com/Sunway-Solar-Maintainer-Motorcycle-Snowmobile/dp/B06WP95W51

I've loved using these TalentCell power banks. Camera runs for a 6-8hr shoot on one.

https://www.amazon.com/gp/product/B016BJCRUO/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

https://www.amazon.com/gp/product/B01337QXMA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Just need to get inventive with the rigging. I use a clamp meant to hold a camera to a rod/pole:

https://www.amazon.com/UTEBIT-Adjustable-Adapter-Aluminum-Photography/dp/B06XNQ8G77/ref=sr_1_9?keywords=clamp+mount+camera+pole&qid=1568172379&s=electronics&sr=1-9

hmm was preferring something more portable like a powerbank used to charge phones but with 12v output and solar panel to top it up. Like something like this but with a battery: https://www.amazon.com/GIARIDE-Foldable-Charger-Sunpower-Portable/dp/B072KD4XCD

Not sure how that would cope with charging the radios alone. The aim is to have something portable to carry around. It is for game rangers that could be for a few days walking in the wild with no power but need to communicate any poaching.

I'm looking at this combo...Battery & Charger
But for the same price the deWalt one looks like it has more juice

For a bit more you can pick up a 103.5WH pack.

https://www.amazon.com/TalentCell-Rechargeable-11000mAh-14500mAh-26400mAh/dp/B016BJCRUO/

I personally tore one apart and tested it, it's good to go.

You can look around on Amazon for similar ones to the one I linked in my previous reply, for example this one:

https://www.amazon.com/SOKOO-Portable-Efficiency-Reinforced-Waterproof/dp/B01HJKJVG2/

There's some questionable reviews but, seems to have 4/5 stars so hopefully it'll be fine. Most of the bad reviews I saw were people complaining that it didn't work in the shade. (lol)

Found another slightly cheaper, but less reviews so it's more of a gamble:

https://www.amazon.com/GIARIDE-Portable-Foldable-Charger-Sunpower/dp/B0727X1ZPW/

If your not worried about price I would get one like https://www.amazon.com/dp/B01J7VPHXC/ref=cm_sw_r_cp_apa_rfVRzbYMB9XDT ... And then get one of these https://www.amazon.com/dp/B01MZ61PRW/ref=cm_sw_r_cp_apa_DjVRzbZY9MMBA

Bought one of these: http://www.amazon.com/TalentCell-Rechargeable-11000mAh-14500mAh-26400mAh/dp/B016BJCRUO/ref=sr_1_2?ie=UTF8&qid=1459270990&sr=8-2&keywords=talentcell and tried running the Nova Drive off the 12v out and it works perfectly! Nova Drive still isn't working off the 12v wall wart that I have, so it's finnicky, but it's works on the board, and that battery has TONS of juice and 9v out to power the rest of the board.

I found the exact one on Amazon:

Solar Charger, 25000mAh Battery Solar Power Bank Portable Panel Charger with 36 LEDs and 3 USB Output Ports External Backup Battery for Camping Outdoor for iOS Android (Black) https://www.amazon.com/dp/B07MR5RPLL/ref=cm_sw_r_cp_api_i_JrFoDbFR0J9XP

I use this Lithium battery pack from Talent Cell, it has worked great for 3 months so far. I keep it charged up and then just grab it when I'm headed out to my patio or out of the car. I made a quick adapter cable to run from the 12V 6A out to the T-style power connector for my radio. the beauty is that you can also use the 9V out or the USB for 5V if you need a different voltage.

https://www.amazon.com/TalentCell-Rechargeable-11000mAh-20000mAh-Portable/dp/B016BJCRUO/ref=sr_1_3?s=electronics&ie=UTF8&qid=1540897311&sr=1-3&keywords=talentcell&th=1