Yuasa 12V 17Ah SLA (NP17-12 l)
The Yuasa NP17-12I belongs to Yuasa’s NP (General Purpose) series, which are valve‑regulated lead‑acid (VRLA) batteries. These are maintenance‑free, sealed units widely used in backup power systems.
Key Specifications
- Nominal Voltage: 12V
- Capacity: 17Ah (at 20-hour rate to ~1.75V/cell)
- Battery Type: Sealed Lead Acid (VRLA, AGM design)
- Design Life: Typically 3–5 years in standby use
- Terminal Type: Commonly M5 threaded insert (may vary slightly by suffix)
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Dimensions (approx.):
- Length: ~181 mm
- Width: ~76 mm
- Height: ~167 mm
- Weight: ~6.0–6.5 kg
Construction & Features
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Absorbent Glass Mat (AGM) technology:
Electrolyte is absorbed in fiberglass separators, preventing leakage. -
Valve-Regulated (VRLA):
Internal pressure valves allow safe gas recombination while preventing overpressure. -
Maintenance-Free:
No topping up with water required. -
Spill-proof Design:
Can be used in various orientations (except upside down). -
Low Self-Discharge:
Retains charge well during storage. -
Flame-retardant casing (on some variants):
Enhances safety in critical applications.
Performance Characteristics
- Standby Use: Ideal for continuous float charging (e.g., UPS systems).
- Cycle Use: Can handle moderate charge/discharge cycles, but not as robust as deep-cycle batteries.
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Operating Temperature Range:
- Discharge: ~ -20°C to +50°C
- Charge: ~ 0°C to +40°C
Typical Applications
The NP17-12I is widely used in:
- Uninterruptible Power Supplies (UPS)
- Emergency lighting systems
- Alarm & security systems
- Fire protection systems
- Telecom backup
- Medical equipment backup power
- Mobility scooters / small electric vehicles (light duty)
Advantages
- Reliable, well-known Yuasa quality and consistency
- Maintenance-free operation
- Good cost-to-performance ratio
- Broad compatibility with standard 12V backup systems
Limitations
- Not ideal for deep-cycle heavy use (frequent full discharges)
- Performance decreases significantly at low temperatures
- Limited lifespan compared to newer lithium battery technologies
Summary
The Yuasa NP17-12I is a dependable, general-purpose 12V 17Ah sealed lead-acid battery, best suited for backup power and standby applications where reliability, safety, and low maintenance are essential.
