FPV Power Lithium Kayak Battery - 17.5 ah

Voltage: 7.5-12.6V
Capacity: 17500 mAh
Amp Draw: 7A Max
Cycles: 400-800
Dimensions: 130x80x70mm
Weight: 915g
Case: Waterproof hard case IP67 (waterproof only when lead is connected)
Battery Management System: Built-in short circuit protection with charging and discharging safety cutoff.
Charger: 2A wall charger

The FPV-POWER 17.5Ah battery suits kayak fisherman who run larger fishfinders/GPS which typically draw more than 1A. If drawing 1A, you can expect around 17 hours of use but you may need a voltage regulator as some fishfinders need a minimum of 11V to run.