Going Mobile! Need Portable Power Station Recommendation

[GwenButler]

Greetings,
There seems to be a vast number of ***high rated*** portable power stations listed on the Internet. Can anyone recommend something they have used first-hand and found to be reliable? I am trying to find something suitable for 3-4 hours of support powering the following configuration. (My plan is to use portable rechargeable speakers.)

- Panasonic Toughbook Laptop 2.0GHz
- Crown XLS Series Power Amplifier
- Peavey Dual DelaFex Digital Effects Processor
- Rolls RM65b Professional Audi Mixer
- One Sennheiser EW 115 Wireless Mic

Thanks in advance for any and all help!

Cheers,
Gwen Butler (aka The Karaoke Queen)