Introduction to the Yuasa Y17-12 and its key features
Yuasa Y17-12 — 12 V, 17 Ah VRLA (AGM) sealed batteryis a compact, maintenance‑free rechargeable battery designed for reliable standby and cyclic power applications. As an Absorbed Glass Mat (AGM) Valve Regulated Lead Acid (VRLA) battery, it combines sealed construction with high short‑term discharge capability, low self‑discharge and predictable charge characteristics. Key features include a nominal voltage of 12 V, a 20‑hour capacity rating of 17 Ah, M5 female threaded terminals for secure connections, and a design life of up to 5 years at 20°C (EUROBAT class 3–5 years).
Detailed description of specifications and benefits
- Nominal voltage:12 V.
- Capacity (20‑hr rate):17 Ah; (10‑hr rate ≈ 15.7 Ah).
- High short/peak capability:approximately 170 A for a 1‑minute discharge, making it suitable for applications that require short bursts of high current.
- Internal impedance:around 16 mΩ (measured at 1 kHz), supporting efficient energy delivery in high‑demand situations.
- Float charge (20°C):13.65 V (±1%). Float charging keeps the battery fully charged during standby use with minimal gassing when done correctly.
- Cyclic charge (20°C):14.5 V (±3%). This higher voltage supports repeated discharge/charge cycles when the battery is used actively.
- Temperature compensation:Float −3 mV/cell/°C; Cyclic −4 mV/cell/°C — helps protect the battery from over/under charging at different ambient temperatures.
- Charge current limits:Cyclic charge current limit ~4.25 A; float current guidance follows datasheet and charger manufacturer recommendations.
- Dimensions (L×W×H):181.5 × 77 × 167.5 mm (typical).
- Mass:approximately 5.7–6.1 kg.
- Terminals:M5 female threaded screw terminals (torque 2.0–3.0 Nm) for reliable, low‑resistance connections.
- Case material:ABS standard; flame‑retardant variants available where required.
- Operating temperatures:Charge −15°C to +50°C; Discharge −20°C to +60°C; Storage −20°C to +60°C (charged).
- Design life:Up to 5 years at 20°C under recommended conditions (EUROBAT 3–5 years classification).
- Maintenance‑free operation:The sealed AGM design eliminates the need to top up electrolyte, reducing routine maintenance and making the battery safer to install in enclosed equipment.
- Reliable standby performance:Accurate float voltage and low self‑discharge ensure the battery remains ready for use in UPS and emergency systems.
- Robust cyclic capability:With specific cyclic charge guidance and a relatively high cyclic current limit, the Y17‑12 is suitable for systems that see periodic discharge and recharge.
- High pulse current support:The ability to deliver large currents for short durations makes it well suited to systems like emergency lighting during mains outages or alarm systems that briefly draw high current.
- Compact and transportable:Its modest size and weight simplify installation in cabinets, enclosures and portable equipment (note shipping regulations for batteries apply).
Use cases and scenarios where the Yuasa Y17-12 excels
The Y17‑12 is a common choice for small to medium UPS units that need a dependable backup source for short‑term power outages. Its sealed AGM chemistry provides steady float performance and the ability to supply high inrush currents to connected equipment during a mains failure.
Security systems often require batteries that can provide long standby life and then provide high bursts of current when alarms trigger. The Y17‑12 meets both needs: low self‑discharge during months of standby and high 1‑minute discharge capability when sensors, sirens and communication modules draw current.
Emergency lighting systems depend on batteries that can be stored charged and then operate reliably during an outage. The Yuasa Y17‑12’s float charge profile and AGM design keep it ready for repeated events and allow relatively compact integration into lighting units or remote battery packs.
For telecom cabinets, point‑of‑sale devices, and portable power solutions where space is limited but current demands can spike, the Y17‑12 offers a balance of capacity and pulse capability. Its secure terminals and predictable charge behaviour are advantages in professional installations.
Comparisons with similar products in the market
When selecting a 12 V, mid‑capacity VRLA battery, buyers typically compare capacity, physical size, terminal type, expected life, pulse performance and brand reliability. The Yuasa Y17‑12 competes strongly in several of these areas:
- Versus other 17 Ah AGM batteries:Many manufacturers offer 17 Ah AGMs with similar dimensions and weight. The differentiators are design life, pulse current capability and manufacturer support. Yuasa’s reputation and clear datasheet guidance (float/cyclic voltages, temperature compensation and charge current limits) help installers match chargers and systems correctly.
- Versus larger capacity batteries:Larger Ah batteries deliver longer run times but increase size, weight and cost. The Y17‑12 is a compromise for installations prioritising compactness while still needing meaningful backup time for equipment with modest power draw.
- Versus lithium alternatives:Lithium iron phosphate (LiFePO4) batteries offer higher energy density and longer cycle life but need specific battery management systems (BMS), different charging profiles and often higher upfront cost. The Y17‑12 provides a simpler drop‑in solution for legacy systems that expect sealed lead‑acid chemistry and a familiar charging regime.
- Terminal and installation considerations:Some competitors use different terminal formats (Faston/push‑on or different threaded sizes). The M5 female threaded terminals on the Y17‑12 deliver secure mechanical connections preferred in many professional installations.
Customer testimonials and typical user feedback
While individual experiences vary, common themes from installers and end users choosing AGM VRLA batteries like the Yuasa Y17‑12 include:
- "Reliable fit for UPS and alarm panels — predictable float behaviour and few failures in service."
- "Easy to install — compact size and secure M5 terminals make wiring straightforward."
- "Good pulse performance — handled short, high current draws from sirens and inverters without issues."
- "Maintenance‑free advantage — no need to top up cells in hard‑to‑reach installations."
Prospective buyers should seek supplier references and check datasheet details for any system‑specific concerns. Typical negative notes in general AGM battery feedback include sensitivity to improper charging regimes (overcharging shortens life) and reduced capacity in cold environments; these are mitigated by following the charge voltages and temperature compensation values provided by the manufacturer.
Conclusion — why the Yuasa Y17-12 is a great choice
The Yuasa Y17‑12 12 V 17 Ah VRLA (AGM) sealed battery is a balanced option for installers and end users needing a dependable, maintenance‑free power source for standby and cyclic applications. Its combination of a proven AGM design, secure M5 terminal connections, solid pulse current capability and clear charge guidance makes it suitable for UPS systems, alarm/security installations, emergency lighting, telecom backup and portable power uses. For systems that require a drop‑in sealed lead‑acid solution without the complexity of bespoke battery management electronics, the Y17‑12 delivers predictable performance and ease of integration.
As with any battery purchase, longevity and performance depend on correct charging, appropriate ambient conditions and adherence to transport and recycling regulations. Refer to the official Yuasa Y17‑12 datasheet for full electrical characteristics and recommended charging procedures, and consult your supplier for warranty and compliance markings relevant to your region.
