NPP 12V 4Ah (F2, 2Pcs) 12Volt Rechargeable Sealed Lead Acid Long Life UPS Battery with F2 terminals DSC Security Panel, Power Patrol, Security Systems, Electronic Scale, Electric Toys
DEWALT 20V MAX Battery, 2 Ah and 4 Ah, 4-Pack, Fuel Gauge LED Charge Indicators(DCB324-4) - - Amazon.com
Amazon.com : WORX WA3578 - PowerShare 20V 4.0Ah, Lithium Ion High Capacity Battery, Orange and Black : Tools & Home Improvement
Amazon.com: Greenworks 24V 4.0Ah USB Battery (2-Pack) Starter Kit + Dual Port Rapid Charger (Genuine Greenworks Parts) : Electronics
RIDGID 18V Lithium-Ion 4.0 Ah Battery and Charger Starter Kit
VANON 20V 4.0Ah Replacement for Worx 20V Battery WA3520 MAX Lithium ion WG151s WG155s WG251s WG540s WG890 WG891,2Pack - - Amazon.com