Photonic Universe 24 V 300 Ah AGM deep-cycle battery bank constructed from 12 x 2 V AGM cells.

• Composition: 12 x 2 V high-quality AGM batteries connected in series to form a 24 V 300 Ah bank.
• Benefits of 2 V battery connection: 2 V cells in a series-only configuration deliver improved longevity because each cell charges and discharges evenly, avoiding the complex series/parallel balancing required by banks assembled from 12 V batteries.
• Deeper discharge capability: Thicker metal plates in the 2 V cells allow more usable energy to be drawn than equivalent banks made from 12 V batteries.
• Suitable applications:
  • Large power systems for motorhomes, caravans and boats
  • Solar, wind and hybrid energy systems
  • Household off-grid power
  • Emergency or UPS backup
  • Telecommunications and network energy storage
• Benefits of AGM batteries:
  • Maintenance-free (no electrolyte top-up)
  • Non-spillable sealed design with terminal protection
  • Longer service life than flooded wet cells
  • Low self-discharge
  • Strong resistance to shock and vibration
• Specifications (per 2 V battery):
  • Nominal voltage: 2 V
  • Nominal capacity: 300 Ah (10 hr) / 330 Ah (20 hr)
  • Maximum charging current: 60 A (initial charging current up to 60 A)
  • Cycle lifetime at 30% D.O.D.: 1,000 cycles
  • Internal resistance (fully charged): 0.98 mΩ
  • Pressure control: safety valve installed
  • Terminal type: F18/F31 with M10 bolts
  • Operating temperature: -10°C to +40°C (14°F to 104°F)
  • Dimensions (excluding terminals): 171 x 151 x 334 mm (6.7 x 5.9 x 13.2 in)
  • Dimensions (including terminals): 171 x 151 x 365 mm (6.7 x 5.9 x 14.4 in)
  • Weight: 16.8 kg (37.0 lb)
• Specifications (entire 24 V battery bank):
  • Nominal voltage: 24 V
  • Nominal capacity: 7.2 kWh
  • Maximum charging current: 60 A
  • Charging voltage (24 V bank): cycle use 28.2 V / standby use 27.4 V at 25°C (equivalent to 14.1 V / 13.7 V per 12 V)
  • Temperature compensation: cycle use -60 mV/°C, standby use -36 mV/°C (equivalent to -30 mV/°C and -18 mV/°C per 12 V)
  • Size (default): 1835 x 171 x 365 mm (72.2 x 6.7 x 14.4 in) — size may vary when arranged with additional connectors
  • Weight: 204 kg (450 lb)
• Supply and support: supplied with metal plate connectors; user manual available to download (https://4boats.com/manuals/AGM300 AH-12SET.pdf); product covered by a 1-year warranty.

Care and compatibility: maintenance-free AGMs require correct charging profiles - use a compatible charger/charge controller and follow the user manual for temperature compensation and safe installation.