The Weida 12V 5Ah Rechargeable Sealed Lead Acid (SLA) AGM Battery (HX12-5 / 12V 5.0Ah / 20HR) is a compact, maintenance-free valve-regulated lead-acid (VRLA) battery engineered for dependable standby power backup, cyclic operations, and emergency power systems. Built with advanced Absorbent Glass Mat (AGM) technology and heavy-duty lead-calcium-tin alloy plates, it offers low internal resistance, low self-discharge rates, and high discharge efficiency. Enclosed in a rugged, leak-proof, non-spillable ABS plastic casing with standard Faston F1/F2 terminals, it operates reliably in multiple orientations. The Weida HX12-5 is widely utilized in uninterruptible power supplies (UPS), fire and burglar alarm panels, emergency lighting systems, CCTV backup units, automated control equipment, electric toys, and portable electronic test instruments.

Specifications

• Brand / Series: Weida Battery (HX Series - High-Performance VRLA/AGM)
• Model / Part Number: HX12-5 (12V 5Ah / 20HR)
• Battery Chemistry / Type: Valve Regulated Sealed Lead Acid (VRLA / AGM)
• Nominal Rated Voltage: 12.0 V DC (6 cells per unit)
• Rated Capacity:
  • 20-Hour Rate (0.25 A to 10.5 V): 5.0 Ah
  • 10-Hour Rate (0.46 A to 10.5 V): 4.6 Ah
  • 5-Hour Rate (0.85 A to 10.2 V): 4.25 Ah
  • 1-Hour Rate (3.0 A to 9.6 V): 3.0 Ah
• Internal Resistance: Approx. 30 mΩ to 35 mΩ (Fully charged at 25°C)
• Terminal Type: Faston Tab F1 (0.187 inch / 4.75 mm) or Faston Tab F2 (0.250 inch / 6.35 mm)
• Maximum Discharge Current: Up to 75 A (5 seconds max.)
• Charging Voltages (at 25°C):
  • Standby / Float Use: 13.60 V to 13.80 V DC (-18 mV/°C temperature compensation)
  • Cycle / Boost Use: 14.40 V to 14.90 V DC (-30 mV/°C temperature compensation)
• Maximum Initial Charging Current: ≤ 1.5 A (Recommended standard charging current: 0.5 A to 1.0 A)
• Self-Discharge Rate: ≤ 3% of capacity per month at 25°C (Can be stored up to 6 months before freshening charge is required)
• Operating Temperature Ranges:
  • Discharge: -20°C to +60°C
  • Charge: -10°C to +50°C
  • Storage: -20°C to +50°C
  • Nominal Operating Temperature: 25°C ± 3°C
• Container & Cover Material: High-Impact Flame-Retardant ABS Plastic (UL 94-HB / UL 94-V0 optional)
• Physical Dimensions:
  • Length (L): Approx. 90 mm (3.54 inches)
  • Width (W): Approx. 70 mm (2.76 inches)
  • Container Height (H): Approx. 101 mm (3.98 inches)
  • Total Height with Terminals (TH): Approx. 107 mm (4.21 inches)
• Net Weight: Approx. 1.45 kg to 1.60 kg (3.2 lbs to 3.5 lbs)

Features

• Advanced AGM Sealed Technology: High-porosity fiberglass separators fully absorb electrolyte, preventing acid leaks, gas venting under normal operation, and plate corrosion.
• Maintenance-Free Operation: High oxygen recombination efficiency (> 99%) eliminates the need to replenish electrolyte or check specific gravity throughout its service life.
• Non-Spillable Multi-Angle Mounting: Sealed structure allows operation in vertical, side-facing, or horizontal positions without leakage risk (avoid charging inverted).
• Compact & Space-Saving: High volumetric energy density fits easily into tight alarm control enclosures, emergency exit signs, and portable equipment housings.
• Low Self-Discharge: Lead-calcium grid alloy ensures long shelf life during storage and reliable standby readiness in security panels and UPS systems.

Common Applications

• Security & Fire Alarm Systems: Primary backup battery for burglar alarms, smoke detection control panels, and access control keypad hubs.
• Emergency Lighting & Signage: Powering exit signs, emergency LED stairwell floodlights, and hallway evacuation beacons.
• Uninterruptible Power Supplies (UPS): Standby battery replacement for compact desktop mini-UPS units and networking backup routers.
• CCTV & Surveillance Systems: Battery backup buffer for multi-channel DC power distribution boxes and DVR/NVR surveillance setups.
• Medical & Test Equipment: Power supply for mobile medical carts, patient monitoring devices, and portable handheld test instruments.
• Electric Toys & Robotics: 12V power source for kids' electric ride-on toys, small robotics platforms, and remote gate openers.

Usage Tips

• Charging Voltage Selection:
  • For Standby / Float Backup: Set the float charge voltage to 13.6V – 13.8V.
  • For Cyclic / Portable Use: Set the charger absorption voltage to 14.4V – 14.8V and limit the initial current to ≤ 1.5A (typically 0.5A).
• Prevent Deep Discharge: Do not allow the discharge cut-off voltage to drop below 10.5V (1.75V/cell). Extended exposure to deeply discharged states causes irreversible lead sulfate crystallization and loss of capacity.
• Terminal Identification & Polarity: Terminals are standard Faston spade lugs (Red/Positive: +, Black/Negative: -). Verify correct connector width (F1 4.75mm vs. F2 6.35mm) before mating with wiring harness crimps.
• Storage Recommendations: Store in a dry, ventilated environment between 15°C and 25°C. To maintain optimal battery health, perform a top-up freshening charge every 3 to 6 months while in storage.
• Series / Parallel Pairing: When combining multiple batteries in series (for 24V/36V/48V) or parallel (for 10Ah/15Ah+ capacity), ensure all connected units are of identical model, age, batch, and state of charge.