The photo shows 6 units of the MEANWELL HRP-600 power supply to be used as single cell chargers. The nominal voltage of the power supply is set to 3.6V and it can charge with up to 120 Amp.
The charging power of the 6 units in parallel will reach 3.6V, 720Amps. Is it a lot? No! Not for 1000AH cell.
Get more ideas for the charging using the MEANWELL HRP chargers.