Lead-acid cells come in multiples of 12V.

220VDC Battery banks for a power station, So we need a manufacturer to buy, do you know any manufacturer regarding this

220V/12V = 18¹/₃ lead acid batteries wired in series, say 19 batteries. Multiply by however many banks of nineteen in parallel are needed to give the amp-hours needed for whatever the bank is supposed to do.

What about the supplier of the original batteries? Their details will be either in the Maintenance Manual, or written on the case of the batteries.

What would be the amp hour rating of your battery bank? Industrial batteries are manufactured in individual cells of 2 volts. Case size and weight of the cell depending amp hour rating of output. These can be arrayed in a single case to your specs.

Note that a 48 VDC 1200 amp hour fork lift battery will weigh around 4000 lbs.

So I would just use individual cells. Rack them out so that they are easier to maintain.

yes, you have come to point the technical requirements are as follow 1)220VDC Battery Bank Bank Voltage - 220 No of Cells - 110 Cell voltage - 2 Capacity(Ah)- 900 Capacity calculated for (hrs) - 3 Capacity calculated for (deg. C) - 30 End of discharge voltage (V) - 1.8 Constant discharge current - 158 Manufacturing experience should 20 years