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Portable/wireless power options for bass

What are you guys using for wireless power these days? This would mostly be for upright jazz gigs so I don't need a ton of power but not sure the best route to take.

1) Battery powered amp: There aren't many battery powered bass amps on the market and I'm hesitant to invest in another amp. Anything worth checking out?

2) Battery powered PA: Cost becomes an issue given the limited use for me but this would be the simplest and most lightweight option.

3) Portable power station paired with my existing amps: I've never used portable power stations but I found a few videos of people running bass amps off of them. Anyone gigging this way? It looks like most of them can safely power a Warwick Gnome, and probably larger amps too. Bonus points for this option since it has uses outside of music stuff.

Thanks
 
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What are you guys using for wireless power these days? This would mostly be for upright jazz gigs so I don't need a ton of power but not sure the best route to take.

1) Battery powered amp: There aren't many battery powered bass amps on the market and I'm hesitant to invest in another amp. Anything worth checking out?

2) Battery powered PA: Cost becomes an issue given the limited use for me but this would be the simplest and most lightweight option.

3) Portable power station paired with my existing amps: I've never used portable power stations but I found a few videos of people running bass amps off of them. Anyone gigging this way? It looks like most of them can safely power a Warwick Gnome, and probably larger amps too. Bonus points for this option since it has uses outside of music stuff.

Thanks
This was just released
Traynor BassMaster 12 Mobile
https://traynoramps.com/bm12mobile/

lg_627c7314abbef653212ce785a16b2772.jpg
 
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I constructed a 5ft diameter copper winding, it has 3000 turns of AWG1 and I plug it into the wall. I use a garden trellis as a stand for it.

on my back, I took a paramotor aluminum frame, and put a matching winding of 3000 turns of AWG1, which goes into a rectifier circuit I made out of discarded copper shielding and baking soda. It’s comfortable enough for 5 minutes at a time to wear.

it works great if I stand within 2ft of the source coil.
 
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If I wanted a battery-powered amp for walking busking gigs, the sweet spot for me would probably be a Roland Cube Street EX at 16.5 lbs. These are rated 50W total into a pair 8s. I believe actual power is probably closer to 13W. I assume it produces usable volume with bass, but barely.

The Traynor looks interesting. 350W with the internal 12" speaker. Does 80W on battery and weighs 32lbs. This would work with some sort of cart.

For fun I bought a Jackery 300. This is a quality pure sine power bank. The list price is $279 but they are frequently offered at about $20 off. My impression is Jackery is a mid-tier product that provides good quality for the price. I chose the Jackery 300 as I feel the performance VS weight trade off was about right for my imagined usage.

Here is the thread I made: Battery-Powered Mayhem! (Jackery 300) | TalkBass.com

The Jackery 300 is rated 300W continuous/600W peak and weighs 8.27 lbs. I wanted a unit I was confident would power my GK 700RB/112 combo.

Jackery's smallest pure-sine offering is the 240. My impression is performance goes down more than the weight. 200W continuous/400 peak and it weigh 6.6 lbs. The next size up is 500W continuous/1000W peak and weighs 13.3lbs.
 
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My plan is to build battery powered bass amps when I retire. I was hoping that could start next year, but you'll probably have to wait 5 more years before you you can get something awesome from me.

That dream aside, the portable PAs are probably your best option. The Alto Busker and that Mackie one are not terribly expensive. And they have the added bonus of being kick ass Bluetooth speakers.
 
I have all three:

1. a battery powered bass amp (a double four)
2. a battery-powered PA (cube street ex currently that just sucks with a bass IME)
3. a jackery power station to power my big rig

I'd take 1 if I'm okay with just a 70W amp, 3 otherwise.
 
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I ended up getting the EcoFlow River 2. Used it on a gig tonight using a Warwick Gnome running into a Phil Jones B4 (8 ohms). The amp was on for around 3 hours and I think it was at around 79% battery left when I turned it off. I'm very happy with it, I didn't get any audible hum or noise with my upright plugged in. I did place the battery as far away from the amp as possible because when I had tried it in my kitchen earlier in the day it was getting a ton of ground noise.