First we should introduce some features of these low frequency inverters

* Integrated MPPT charge controller 60A/120A

* Built-in pure copper low frequency transformer

* Optional WIFI/ GPRS remote monitoring

* Compatible with Lithium battery and AGM battery

* Configurable grid or solar input priority

* Generator connection available

* Optional 120/240VAC Split Phase output for USA, Canada and some other countriesThen we need to know sizes and weights of each container

while in calculation, we need to focus on both volume and weights, then can calculate exact quantity for each inverters. Or if still not cear please contact ZLPOWER people do this for you. Or any questions about the inverters, call us freely at 86-755-29105850.