Review on Rechargeable 12V 3000MAh Lithium Battery Pack: Power Bank For LED Strip, CCTV Camera & More by Kenny Donald

My use case is demanding: running a Raspberry Pi field computer with a monitor. These power banks are a great value, and they represent the best you can obtain from modern LiPo technology. The reviewers who complain about the charging time are technically uninformed; this is not a RC monster truck battery system. First I purchased the 1800mAh model; but I needed more run time so I got the 3000mAh model here. Just remember, you need to turn it on to charge. I would purchase again.