NSS 2491271 24V, 25A On-Board Battery Charger for NSS. 24V, 25A Delta-Q QuiQ on-board battery charger for many popular NSS floor machines including, Wrangler 2625, 2625DB. One battery charger required per unit. This is not a stand-alone battery charger. This charger is found on the unit and is straight thru wired. Replaces NSS 2491271. Our Part Number NSS 2491271. Also replaces Nilfisk Advance 56315124 and Clarke 40844A.