CRAFTSMAN V20 20-Volt 4 Amp-Hour; Lithium Power Tool Battery in the Power Tool Batteries & Chargers department at Lowes.com
18V ONE+ Compact 4.0Ah Battery
Amazon.com: SnapFresh 20V Lithium Battery - 4.0Ah Li-ion Battery Packs for Cordless Tools, Long Life Battery Work with All SnapFresh Cordless Tools Only, Lithium-Ion Battery Support Fast Charging (BBT-DC40A) : Tools &
Amazon.com: LawnMaster 518850 24V MAX 4.0Ah Battery : Health & Household
Metabo 625591000 18v Li-Power CAS 4.0Ah Li-Ion Battery | Powertool World