I searched the "Amazon rain-forest" and I found some options!
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(1) 1500w battery bank. 4 stars on Amazon. Currently $520, free shipping. https://www.amazon.com/Xantrex-802-1500-XPower-Portable-Powerpack/dp/B00005RHQQ/ref=sr_1_3?dchild=1&keywords=portable+battery+1500w&qid=1592207075&sr=8-3
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(2) 5000w battery bank. 4 stars on Amazon. Currently on sale at $399, free shipping. https://www.amazon.com/dp/B003TU6MDM/ref=sspa_dk_detail_4?psc=1&pd_rd_i=B003TU6MDM&pd_rd_w=DDkC6&pf_rd_p=48d372c1-f7e1-4b8b-9d02-4bd86f5158c5&pd_rd_wg=4pnGM&pf_rd_r=VM2Q12B95F36KK17R8HY&pd_rd_r=1fd8e1c2-ee84-42d4-8f8a-b1ab15e7befa&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUFRVlNGODY0V1ZQU04mZW5jcnlwdGVkSWQ9QTA3MTA3NjExQjVHTjJCVDlQTTZNJmVuY3J5cHRlZEFkSWQ9QTAzOTc1MDVWUk40SzUzS1hJSTkmd2lkZ2V0TmFtZT1zcF9kZXRhaWwmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl