I have a battery charger connected to an extra slave end, and it works just fine,and there is no way it could not work, u can charge or jump/slave start thru this connection, but like an above post is recomending, U need to do alot of reading before u get up to spead, this site offers it all, so look up the tm's and do your homework, its worth it,,,,funny ... here in the liberal state of New Jersey, the Guard units have a new rule as of a year or two ago, "we will not use the term SLAVE to jump start a vehicle from this time on....what a bunch of nit wits......Randy