1. Battery: how long it last, lifetime cycle, is it has Power UPS on it
The battery runtime depends on what is connected (the number of watts the devices use). Without knowing the load it is not possible to determine the exact run-time but it can be estimated. We have 792-watt-hour batteries on the cart so to get the run-time, take the watts the devices use and divide into 792 to get the hours of run-time from the batteries. Then take somewhere between 90% and 75% of the calculated run-time, which factors in a loss in the inverter, a loss which depends on the watts used by the devices. Also if possible, use a power meter instead of the label on the devices to determine watts since the screen and CPU will not be on 100% of the time.
The lifetime cycles of Sealed Lead Acid batteries are about 300 for 50% life. The cart has a sort of a UPS--it is a power system with an inverter to provide the AC voltage, and a charger to charge the on-board Sealed Lead Acid batteries.
2. What is brand model of UPS in these models, and what is connection type is it inline or online?
We use Tripplite. The connection type is such that when plugged into the wall, the AC from the wall outlet provides power to the monitor/CPU as well as charging the batteries in the cart. When the cart is disconnected from wall power, the battery provides power to an inverter which provides AC power to equipment.
6. I need list of references are using these carts specially in USA if possible
You should get in touch with an Ergotron sales representative, who would be happy to share references with you (it doesn't seem appropriate to provide references in an open forum like this). Our products are used by some of the most prominent healthcare facilities in the country, so there is no shortage of potential references.