we have Jungheinrich EMC 10 pallet lift ,that we have rebuild from scrap and we get a new charger and this charger have 5 cables

This seems to be the original charger

1 earth
1 + 4mm2 red cable (thats ok goes to battery)
1 - 4mm2 black cable (thats ok goes to battery)

then it have 2 more cables I wonder if someone could came up with where they should be connected ,orginal card is removed
1 pcs 1,5mm2 purple and 1pcs 1,5mm2 black

Could someone tell me where to connect the 1,5mm2 cables or nice if anyone have technical manual for a Jungheinrich EMC 10