GNB Flooded Classic NXT-21 line features two module designs with a wide range of capacities to fit the requirements of renewable energy applications. These batteries are ideal for float applications with an occasional deep discharge, such as battery-backup for grid-connected systems. The front safety shield design easily clips on and off without tools for quicker assembly. The modules are coated with acid resistant epoxy powder paint and each module has mounting holes for grounding option.
Material — Container - Styrene-Acrylonitrile (SAN)?Cover - Acrylonitrile Butadiene Styrene (ABS)
Optional — Polycarbonate Container & Cover, All Plate Counts PVC Container & Cover, 27 - 29 Plate Counts Only
Grid Alloy — Positive - Lead-Calcium-Tin Negative - Lead-Calcium
Separators — Microporous Material
Retainers — Fiberglass Material
Posts — NXT-09 to NXT-19 Two 1.5" (38.1 mm) square NXT-21 to NXT-29 Four 1.0" (25.4 mm) square NXT-31 to NXT-39 Four 1.5" (38.1 mm) square
Post Seals — Floating “O” Ring - Seal Nut?Vents — “Pre-Vent” Flame Arrester?
Level Lines — High and Low - All Container Surfaces
Electrolyte — Height Above plates - 2.75" (69.9 mm)
Electrolyte Withdrawal Tubes — 2 per cell
Sediment Space — 1.06" (26.9 mm)?
Specific Gravity — 1.215 @ 77°F (25°C)
?Inter-Cell Connectors — Lead Plated Copper
GNB Flooded Classic NXT-21 General Specifications
Cell type: NXT-21
Amp-Hour Capacity: 1358
Length in (mm): 9.25 (235)
Width in (mm): 14.5 (368)
Height in (mm): 22.5 (572)
Net lbs (kg): 238 (108)
Packed lbs (kg): 248 (112.5)
Electrolyte per cell gal. (liters): 7.3 (27.5)