The Su-Mak SMPB-55AH is a 12V, 55Ah Gel Deep Cycle battery designed for energy storage applications, particularly suited for solar power systems. It utilizes Gel electrolyte technology, which offers maintenance-free operation, deep discharge recovery, and a long service life.

Key Features & Benefits

1. Gel Deep Cycle Technology

   • Suitable for repeated deep discharging and recharging.

   • Ideal for renewable energy systems, UPS, and electric vehicles.

2. Wide Temperature Tolerance

   • Performs reliably across a range of temperatures.

   • Capacity retention: 65% at -15°C, 104% at 40°C.

3. Long Shelf Life

   • Retains 91% capacity after 3 months, 82% after 6 months, and 65% after 12 months of storage at 25°C.

4. Optimized Charging Profiles

   • Cycle Use: 14.5V – 14.9V (max current ≤ 16.5A)

   • Float Use: 13.6V – 13.8V

   • Supports constant voltage charging for extended battery life.

5. High Discharge Performance

   • Delivers high current for short durations (e.g., 170.4A for 5 min to 9.6V).

   • Consistent power output under varying load conditions.

6. Cycle Life vs. Depth of Discharge (DOD)

   • Longer cycle life at lower DOD (e.g., more cycles at 30% DOD than 100% DOD).

   • Enhances longevity when used in partial-state-of-charge applications.

7. Maintenance-Free & Safe

   • Gel electrolyte minimizes gas emission and prevents leakage.

   • Can be installed in various orientations.

Performance Data Highlights

• Discharge Capacity:

  • 1-hour rate: 30.5Ah @ 30.2A

  • 3-hour rate: 41Ah @ 13.7A

• Temperature vs. Capacity:

  • 0°C: 83%

  • 25°C: 100%

  • 40°C: 104%

• Constant Power Discharge:

  • Supports loads up to ~1.77kW for short durations.

Intended Applications

• Solar energy storage systems

• UPS backup power

• Telecommunications

• Electric scooters and mobility vehicles

• Marine and RV power systems