Update on my post above. I bought the Bestgo 400Ah 12V battery after many detailed conversations with Tony of Bestgo. I finished capacity testing a couple days ago. With 10A charge rate, starting at 14.6V and terminating at 11.2V (2.8V/cell), the battery produced 430.6Ah capacity, (5.58 kWh) well above the stated 400Ah capacity even though not discharging to the lower limit of 2.5V. I'm very impressed with the case and the entire fit/finish is excellent. The meter that comes on the unit was not very accurate (showing 9.16A while chaerging at 10A and showing 9.26 while discharging at 10A) and Tony explained that because these units are able to charge/discharge rapidly, the meter is good up to 200A so the accuracy suffers at lower charge/discharge rates. Very happy with this purchase and wanted to let anybody know who is still considering this battery. I have a screenshot of the capacity test and can provide this or the spreadsheet file if anybody wants it. I couldn't upload the screenshot here because the file type is unsupported.