Yuasa Yucel 6V 4Ah SLA (Y4-6)

The Yuasa Yucel Y4-6 (6 V 4 Ah) SLA battery is a compact, sealed lead‑acid (SLA) rechargeable battery designed for reliable standby and cyclic power applications. Here’s a clear breakdown of its features, specifications, and typical uses: Key Specifications Voltage: 6 volts Capacity: 4 ampere-hours (Ah) Battery type: Sealed Lead Acid (VRLA – Valve Regulated Lead Acid) Technology: Absorbent Glass Mat (AGM) Maintenance: Maintenance‑free (no need to top up electrolyte) Terminals: Typically Faston spade terminals (varies slightly by version) Design & Construction Sealed construction: Completely spill-proof and can be mounted in various orientations (except upside down) AGM technology: Electrolyte is absorbed in fiberglass mats, improving safety and vibration resistance Valve-regulated: Releases gas only in extreme conditions, helping maintain internal pressure Durability: Designed for both standby use (constant float charge) and cyclic use (repeated discharge/charge) Typical Physical Characteristics (Approximate; slight variation by batch/model revision) Length: ~70 mm Width: ~47 mm Height: ~101 mm Weight: ~0.7 kg Performance Characteristics Float (standby) charging voltage: ~6.75–6.9 V Cycle charging voltage: ~7.2–7.5 V Operating temperature range: Discharge: approx. -15°C to +50°C Charge: approx. 0°C to +40°C Self-discharge rate: Low (can typically sit for months without significant charge loss) Service life: ~3–5 years in standby applications (depending on conditions) Common Applications The Y4‑6 is widely used in small devices requiring dependable backup or portable power, such as: Emergency lighting systems Alarm and security systems Small UPS units (uninterruptible power supplies) Portable electronics and hobby equipment Medical and diagnostic devices Electric toys and ride-ons Advantages Maintenance-free operation Leak-proof and safe to handle Reliable and cost-effective energy storage Good performance in intermittent and backup roles