BC121N 110V Multi Unit Desktop ChargerRapidly charges up to 6 battery packs.For Use with:M72 requires 1 of BC157 AC Power Supply and 6 of AD114 Charger Adapter CupM88 requires 1 of BC157 AC Power Supply and 6 of AD100 Charger Adapter CupGM1600 requires 1 of BC157 AC Power Supply and 6 of AD109 Charger Adapter Cup