Subconn offers battery connector options, such as 2 and 3 contact battery charging connectors, suitable for charging up to 25 amp. These are based on the standard circular series and are rated to run at 600 V (volts). contact resistance : <0,01 ohm. insulation resistance : >200 megaohm. temperature rating : -4° to +60° C - 25° to 140° F. depth rating : 1.400 bar - 20.000 psi.