A rechargeable 25.55V, 7.8Ah Li-ion pack (18650 cells, 7S3P) that keeps a commercial vessel's daylight signaling lamp ready — clear ship-to-ship and ship-to-shore signaling when radio isn't an option.
Key features
High-capacity 18650 Li-ion cells in a 7S3P pack
Rechargeable: no frequent replacements
Shipped at 24V or higher, ready for service
Specifications
Chemistry
Li-ion, 18650 7S3P
Nominal voltage
25.55V
Full charge / full discharge
29.4V / 19.25V
Capacity
7,800mAh nominal / 7,500mAh minimum
Max charge current
1.5A
Max discharge current
5A
Charge method
0.2C CC to 29.4V, then CV to 0.01C
Charge temperature
32–122 °F (0–50 °C)
Cycle life
1,000+ cycles
Dimensions
5.31 × 2.76 × 2.20 in (135 × 70 × 56 mm); 135 mm leads
