4-Pack UB645 Universal Sealed Lead Acid Battery (Compatible with Teledyne Big Beam 2ET6S5) — 6V 4.5Ah (4500mAh) AGM/SLA, F1 Terminal — Includes 8 F1 to F2 Adapters — UpStart

UpStart UB645 replacement batteries — quantity 4. These Universal Sealed Lead Acid (SLA) / AGM batteries are compatible with the Teledyne Big Beam 2ET6S5. Each battery is 6V with a 4.5Ah (4500mAh) capacity and comes with an F1 terminal. Package includes eight F1 to F2 terminal adapters to accommodate devices requiring F2 connections. UpStart Battery Brand.